modeling of ultra-precision elid grinding | j. manuf. sci

Modeling of Ultra-Precision ELID Grinding | J. Manuf. Sci

The main focus is to develop a force model for the ultra-precision ELID grinding where the material removal is significantly lower than the conventional grinding. When the material removal rate is very low, it is very important to estimate the real contact area between the wheel and work surfaces. Modeling and Simulation of NC Precision Sphere Grinding Based on the proposed approach, the modelling and simulation process of a novel five-axis bench-top ultra-precision micro-milling machine tool—UltraMill—is presented. Schematic diagram of ultra-precision grinding operation Based on the grinding kinematics theory, the simulation models of the surface waviness topography and the circular waviness profiles of the ground Fresnel micro-structured mold were developed

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experimental study on the reliability and the precision

Experimental study on the reliability and the precision

The development of high-reliability, high-precision large-scale CNC ultra-precision grinding machines is essential for the efficient processing and manufacturing of large-diameter optical components. In this paper, we studied the reliability and the precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor performance were identified Three-dimensional modeling and theoretical investigation of 3D simulation is a proper method to investigate the formation mechanism of the grinding marks and the effect of the ultra-precision grinding parameters on morphological characteristics of the grinding marks. In the modeling process of the grinding marks, the surface topography of the surface roughness scale (e.g., formed by abrasive cutting Modeling and Simulation Analysis of NC Camshaft Grinding Modeling and Simulation Analysis of NC Camshaft Grinding System Abstract: Based on NC system of Siemens 840D, and taking Permanent Magnet Synchronous Motor (PMSM) as control object , each sector of rotational axis (Axis C) and wheel feed shaft (Axis X) which affect the camshaft grinding accuracy, is thoroughly analyzed in this paper by

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chenyang zhao | doctor of philosophy

Chenyang ZHAO | Doctor of Philosophy

At present, ultra-precision grinding is a primary machining process in fabricating optical elements. However, in the grinding process, the unbalanced vibration of the wheel frequently appeared, wh The Design of Remote Real-Time Intelligent - scientific.net Modeling and simulation methodology of the machined surface in ultra-precision grinding[J]. Chinese Journal of Mechanical Engineering, 2010, 46(13):186-198. DOI: 10.3901/jme.2010.13.186 Modeling and Numerical Simulation of the Grinding Temperature Based on the excellent heat transfer property of nanofluids, the output heat through the grinding medium acquired an increasingly high proportion, leading to the drop of the temperature in the grinding zone. For the same cooling and lubrication conditions, grinding temperature presented insignificant changes along the direction of grinding width.

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three-dimensional modelling and simulation of vibration marks

Three-dimensional modelling and simulation of vibration marks

DOI: 10.1016/J.PRECISIONENG.2018.04.006 Corpus ID: 139276658. Three-dimensional modelling and simulation of vibration marks on surface generation in ultra-precision grinding @article{Chen2018ThreedimensionalMA, title={Three-dimensional modelling and simulation of vibration marks on surface generation in ultra-precision grinding}, author={Shanshan Chen and Chi Fai Cheung and Feihu Zhang and Book Simulation And Experiments Of Material Oriented Ultra In the context of subtractive manufacturing, ultra-precision diamond turning is based on the pillars of materials science, machine tools, modeling and simulation technologies, etc., making the study of such machining processes intrinsically interdisciplinary. Molecular Dynamics Modeling and Simulation of Diamond Cutting In summary, we perform MD modeling and simulation to elucidate the underlying mechanisms of cerium under the ultra-precision diamond cutting. The EAM and Morse potentials are respectively employed to describe atomic interactions within cerium workpiece and the interactions between cerium workpiece and diamond cutting tool.

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digital twins-based smart design and control of ultra

Digital Twins-Based Smart Design and Control of Ultra

Ultra-Precision Machining (UPM) is a kind of highly accurate processing technology developed to satisfy the manufacturing requirements of high-end cutting-edge products including nuclear energy producers, very large-scale integrated circuits, lasers, and aircraft. The information asymmetry phenomenon widely exists in the design and control of ultra-precision machining. It may lead to State Key Laboratory of Ultra-precision Machining Technology Model-based self-optimization method for form correction in the computer controlled bonnet polishing of optical freeform surfaces. Optics express, 26(2), 2065-2078. 2. Chen, S. S., Cheung, C. F., & Zhang, F. H. (2018). An experimental and theoretical analysis of surface generation in the ultra-precision grinding of hard and brittle materials. Integrated simulation method for interaction between PIENDL S, AURICH J. FEM simulation of chip formation coupled with process dynamics[J]. Journal of Manufacture and Engineering, 2006, 220(10): 1597–1604. Article Google Scholar [19] LIANG Y C, CHEN W Q, SUN Y Z, et al. Dynamic design approach of an ultra-precision machine tool used for optical parts machining[J].

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modeling and simulation of process-machine interaction in

Modeling and Simulation of Process-Machine Interaction in

This paper proposes a method of modeling and simulation to understand well the process-machine interaction in grinding process of cemented carbide indexable inserts. First, a virtual grinding wheel model is built by considering the random nature of abrasive grains and a kinematic-geometrical simulation is adopted to describe the grinding process. [Pdf/ePUB] Surface Generation In Ultra Precision Diamond Complex optical surfaces, for example, can be produced without the need for post-machining polishing. This book focuses on the aspect of modelling nano-surface generation in ultra precision SPDT. Potential industrial applications in the prediction of surface quality, the process optimization, and precision mould manufacturing are also studies. Simulation-based evaluation of surface micro-cracks and Read "Simulation-based evaluation of surface micro-cracks and fracture toughness in high-speed grinding of silicon carbide ceramics, The International Journal of Advanced Manufacturing Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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abstract - osa | osa publishing

Abstract - OSA | OSA Publishing

High-precision optical components with complex shapes or microstructures have been extensively used in numerous fields such as biomedicine, energy and aerospace. In order to accurately achieve the specific functions of the components, the form accuracy and uniform surface quality need to reach an ever-high level. To achieve this, ultra-precision normal grinding is used for machining various FEM-Based Study of Precision Hard Turning of Stainless Steel 316L Precision hard turning is considered a profitable and dependable alternative to grinding, with a reduction in machining time as high as 60% . It is worth emphasizing that appropriate cutting conditions have to apply to enable precision hard turning to deliver very fine machined surfaces [ 6 , 7 , 8 ]. ModuleWorks and ZEISS Cooperate on a Unified CAD/CAM Solution Ultra-precision machining is used for parts that need to be machined to an accuracy of just a few µm and a roughness in the range of nm. Optical parts require both types of machining, ultra-precision machining for the optically effective areas of the part and conventional machining for the non-optical areas.

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advances in grinding and abrasive technology xiii -2005

Advances in Grinding and Abrasive Technology XIII -2005

Model Establishment of Chip-Formation due to Shock under Ultra-High Speed Grinding H.H. Zhao, Guang Qi Cai, X.J. Gao p246 Abstract ; Study on Single-Plane Biaxial Balance Monitor System in ULTRA-Precision Grinding L. Zheng, Y.B. Guo, Z.Z. Wang p251 Abstract ; Machinability Evaluation of Engineering Ceramics with Digraph Method ‪Jan C. Aurich‬ - ‪Google Scholar‬ Micro grinding tool for manufacture of complex structures in brittle materials. JC Aurich, J Engmann, GM Schueler, R Haberland. CIRP annals 58 (1), 311-314. , 2009. 139. 2009. Development of a superabrasive grinding wheel with defined grain structure using kinematic simulation. ultra grinding machine Ultra precision 4 axes grinding machines with a maximum resolution of 1 nm for 3 axis linear feeding and a prototype ultra stiff machine tool Tetraform C Ultra Precision Grinding Demonstrated in BSP Ultra fine Pulverizer unit is also called ACM grindiner Air classifier mill .

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[pdf] principles of modern grinding technology ebook download

[PDF] principles of modern grinding technology eBook Download

Book Description Principles of Modern Grinding Technology, Second Edition, provides insights into modern grinding technology based on the author’s 40 years of research and experience in the field. It provides a concise treatment of the principles involved and shows how grinding precision and quality of results can be improved and costs reduced. Analysis and modelling of temperature effect on DIBL in UTBB The Drain Induced Barrier Lowering (DIBL) behavior in Ultra-Thin Body and Buried oxide (UTBB) transistors is investigated in details in the temperature range up to 150°C, for the first time to the best of our knowledge. The analysis is based on experimental data, physical device simulation, compact model (SPICE) simulation and previously published models. Contrarily to MASTAR prediction Keviewly Low price 1932 The Mummy Movie 4 Metal Inches 12 Ret Make sure this fits by entering your model number. Perfect Decoration - It's perfect for your home amp; office amp; Farmhouse decorationâ ¦ Also makes a unique gift! "li" Each tin sign is made of professional quality metal and comes with pre-drilled holes for easy hanging. "li" A wonderful decoration to add to your bar,coffee house or home.

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experimental study on the reliability and the precision

Experimental study on the reliability and the precision

The development of high-reliability, high-precision large-scale CNC ultra-precision grinding machines is essential for the efficient processing and manufacturing of large-diameter optical components. In this paper, we studied the reliability and the precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor performance were identified Micromachines | Special Issue : Advances in Ultra-Precision A simulation based analysis is carried out with the help of the perturbation analysis model of an aerostatic thrust bearing simulation by using FLUENT software (CFD). Therefore, two models of aerostatic thrust bearings—one with the porous and other with partial porous orifice are developed—are simulated to evaluate the effects of Tool path generation of ultra-precision diamond turning: A There are four main methods for manufacturing freeform optics based on cutting process: ultra-precision grinding, fly-cutting, fast tool servo (FTS) diamond turning, and slow slide servo (SSS) diamond turning. 5 5. Tohme YE, Lowe JA. Machining of freeform optical surfaces by slow slide servo method[C].

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modeling and simulation of high-speed cylindrical grinding

Modeling and simulation of high-speed cylindrical grinding

Liu Y, Li B, Wu C and Zheng Y 2016 Simulation-based evaluation of surface micro-cracks and fracture toughness in high-speed grinding of silicon carbide ceramics Int. J. Adv. Manuf. Technol. 86 799-808 Dynamic Accuracy Design Method of Ultra-precision Machine Ultra-precision machining technology plays an increasingly important role in the future manufacturing field. The surface quality requirement of the machined parts becomes higher and higher, especially in some application fields such as the precision optics []. Investigation of machining mechanism of monocrystalline At present, the research on ultra-precision machining mechanism mainly includes ultra-precision machining experiment, finite element method simulation and molecular dynamics simulation. However, observing the material removal in only a few nanometers by the complicated and expensive instruments such as scanning electron microscopy (SEM) 11 11.

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fem-based study of precision hard turning of stainless steel 316l

FEM-Based Study of Precision Hard Turning of Stainless Steel 316L

Precision hard turning is considered a profitable and dependable alternative to grinding, with a reduction in machining time as high as 60% . It is worth emphasizing that appropriate cutting conditions have to apply to enable precision hard turning to deliver very fine machined surfaces [ 6 , 7 , 8 ]. Modeling and evaluating of surface roughness prediction in Models of grain density generation and grain interval are built, and new predicting model of micro-grinding surface roughness is developed. In order to verify the precision and application effect of the surface roughness prediction model proposed, a micro-grinding orthogonally experiment on soda-lime glass is designed and conducted. Study on Micro-grinding Force Based on Different Single The micro-grinding experiment was performed on the ZCuZn38 and the measured micro-grinding force was compared with that obtained from micro-grinding models. The change of micro-grinding force with process parameters was discussed according to the proposed micro-grinding force models. The results show that the micro-grinding force models based

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multi-scale modeling and simulation of material removal

Multi-scale modeling and simulation of material removal

As a result, this paper presents a multi-scale theoretical model for the prediction and simulation of the material removal characteristics in the CCBP process. The model is established based on the study of contact mechanics, kinematics theory and wear mechanisms. Review on the progress of ultra-precision machining technologies Abstract: Ultra-precision machining technologies are the essential methods, to obtain the highest form accuracy and surface quality. As more research findings are published, such technologies now involve complicated systems engineering and been widely used in the production of components in various aerospace, national defense, optics, mechanics, electronics, and other high-tech applications. Research Article Modeling and Simulation of Process-Machine a couple simulation approach which treats the grinding process and machine tool structure in an integrated manner is presented. Also, an investigation of the results of process-machine interaction is described. 2. Process Model A kinematic-geometrical simulation model (KSIM) is adopted in this research work, which was rst developed by

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predictive modeling of grinding force considering wheel

Predictive Modeling of Grinding Force Considering Wheel

The research on grinding force is critical to obtaining a mirror with a high surface accuracy and a low subsurface damage. In this paper, a unified 3D geometric model of toric wheel–workpiece contact area and its boundaries are established based on the local geometric properties of the wheel and the workpiece at the grinding point (GP). Surface finish prediction models for precision grinding of Conventional grinding of silicon substrates results in poor surface quality unless they are machined in ductile mode on expensive ultra-precision machine tools. However, precision grinding can be used to generate massive ductile surfaces on silicon so that the polishing time can be reduced immensely and surface quality improved. However, precision grinding has to be planned with reliability in Advances in Grinding and Abrasive Processes 62. Study of Ultra-High Speed Grinding Mechanism with Molecular Dynamics Simulation 63. Study on Spherical Face Grinding of Gcr15-Bearing-Steel Spindle Pivot by CBN Wheels 64. Research on the Influence of the Diamond Wheel Wears on Machining Accuracy during Large Depth-to-Diameter Ratio Ultra-Precision Aspheric Grinding Process 65.

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ultra-precision machining of sinusoidal surfaces using the

Ultra-precision machining of sinusoidal surfaces using the

The simulation process has the functions of checking interference and verifying tool path, which are important for ultra-precision machining. The validity of the cutting path is mainly checked in this paper using one CAM module, including motion and cutting simulation. 5.1. Motion simulation The motion simulation module emulates the kinematics A dynamics-driven approach to the design of precision machine Then, the design processes of precision machine tools and practical modelling and simulation approaches are discussed. Case studies on the design and analysis of a fast tool servo system and a five-axis bench-top micro-milling machine are reported. Establishment and Verification of the Cutting Grinding Force The first is a physical grinding model and a numerical simulation model of single-grit. For instance, Duan et al. assumed the shape of the abrasive grain to be a cone and carried out the three-dimensional grinding simulation of the single-grit, which better solved the element distortion in the grinding simulation with the finite element method.

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design of a five-axis ultra-precision micro-milling machine

Design of a five-axis ultra-precision micro-milling machine

Based on the proposed approach, the modelling and simulation process of a novel five-axis bench-top ultra-precision micro-milling machine tool—UltraMill—is presented. The modelling and simulation cover the dynamics of the machine structure, the moving components, the control system and the machining process and are used to predict the 8th CIRP International Workshop on Modeling of Machining Simulation of Grinding Processes with FEA 329 H.-W. Hoffmeister, K. Maiz, I. Machanova Modelling and Simulation of the Rotational Grinding Process 335 E. Ahearne, G. Byrne Grinding Technology Realizing to Reduce Grinding Fluid in Minimum 343 R. Mukai, T. Abe, T. Shibukawa, Y. Wakazono, T. Yoshimi Model to Optimise the Grain Pattern of Grinding USIM PAC, process modeling and simulation software - CASPEO Improve overall plant performance from lab to plant with our simulator. USIM PAC is a complete software platform for modeling and simulation of industrial processes.. It performs simulation, data reconciliation, mass balancing, flowsheeting, equipment sizing, economic and environmental calculations and off-line process optimization in a single environment for overall plant or part thereof.

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study on the surface topography considering grinding chatter

Study on the surface topography considering grinding chatter

Thirdly, the influence of the wheel grinding parameters and dynamic parameters on the surface height is discussed by coupling the dynamic characteristics into the simulation model. Finally, the simulations and experiments are carried out on the impact of different feeding rates and sections on the workpiece to the surface heights. Diamond tool wear in ultra-precision machining, The Diamond has many outstanding properties, such as high hardness, great toughness, high capability up to a nanometric tool cutting edge, high thermal conductivity, low friction, and high wear resistance. Accordingly, it is employed as an efficient tool in ultra-precision machining (UPM). However, diamond tool wear (DTW) in UPM is an inevitable physical phenomenon and even a little DTW will Research and Markets: Extremely Extensive Report on the Development of a Dynamic Model for Ultra-Precision Raster Milling Research and Simulation on the Wear Uniformity of Lapping Plate Machinability in Precision Grinding of Aspheric Optical

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[pdf/epub] surface generation in ultra precision diamond

[Pdf/ePUB] Surface Generation In Ultra Precision Diamond

Complex optical surfaces, for example, can be produced without the need for post-machining polishing. This book focuses on the aspect of modelling nano-surface generation in ultra precision SPDT. Potential industrial applications in the prediction of surface quality, the process optimization, and precision mould manufacturing are also studies. Products & performances under one single roof - Levicron Hence our Slogan: Ultra-Precision meets industrial Grade Analytics, Simulation, Development & Optimization Calculating and simulating bearing characteristics and shaft dynamics is only half the way you need to go to reach your destination. Review of geometric error measurement and compensation Calibration: Realizing the true potential of ultra-precision machines. The ultra-precision machine tools is the essential equipment to produce fantastic functional surfaces and complex parts with extremely high form accuracy and mirror surface finish. Performance evaluation from time to time is the key to diagnose any issues of machines.

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stochastic cutting force modeling and prediction in machining

Stochastic Cutting Force Modeling and Prediction in Machining

As the cutting force plays an important role in machining, the modeling of cutting force has drawn considerable interests in recent years. However, most of current methods were focused on the deterministic modeling of cutting force, while the inherent stochasticity of cutting force is rarely considered for general metal cutting machining. ISMNM2021 Hybrid; On-line/On-site October 27 (Wed.) – 29 (Fri Specific Cutting Energy modeling of High-Speed Dry Milling UD-CF/PEEK Based on Energy Distribution Mechanism Effected by Frequently Impact and Size Effect: 11:55-12:15 10:55-11:15 Invited Speech Prof. Lijing Xie (Beijing Institute of Technology, China) Experimental and Simulation Study on the Meso-scale cutting of SiCp/Al Composites: Invited Speech Research on the system matching model in ultrasonic vibration In this paper, the ultrasonic vibration-assisted grinding is studied, and a new method is provided to solve the problem of matching the machine tool system and the ultrasonic system. By establishing the matching model, this problem is theoretically solved optimally. Moreover, the abrasive grain motion equations, the removal rate model, and grinding force prediction model are presented. Then

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steven_y._liang_me | george w. woodruff school of mechanical

Steven_Y._Liang_me | George W. Woodruff School of Mechanical

“Analytical Model of Work Hardening and Simulation of the Distribution of Hardening in Micro-milled Nickel-based Superalloy,” International Journal of Advanced Manufacturing Technology (SCI listed), Vol. 97, N. 9-12, pp. 3915-3923, August 2018. Modeling and Compensation for Hysteresis Nonlinearity of a Various types of such models have been introduced, such as the Preisach model [6, 9], the Prandtl-Ishlinskii (PI) model [10, 11], the Bouc-Wen differential model , the turning voltage-based model [7, 13], and the neural network-based intelligent model [14, 15]. Essentially, almost all of these currently developed models are based on complex Mechanical Engineering at IIT Madras » Research Topics for Multiscale based Study of composite material Nacre: DAC-MP-MS-03: 9: Automation of grinding intellingence: The grinding process may be automated and intelligent by the application of signal processing techniques in the grinding machines. Sensors will be attached to grinding machine to acquire vibration and power signals.

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department of mechanical and production engineering, aust

Department of Mechanical and Production Engineering, AUST

Investigation of Critical Edge Radius for the Variation of Ultra-precision Machining Results of Difficult-To-Cut Materials , In Proc. 17th International Conference of the European Society for Precision Engineering and Nanotechnology (EUSPEN), 2017 Finite Element Analysis and Simulation about Microgrinding of SiC The application of silicon carbide (SiC) is often limited due to its low machining efficiency and unpredictability about the results of the grinding process. The aim of this paper is to set up finite element analysis models (FEM) about microgrinding process of SiC, to study the change processes about tangential and normal grinding force which can lead to stress and strain inside SiC material Publications – IMS-Mechatronics Laboratory A STUDY ON MODEL-BASED ANALYSIS OF THE DYNAMIC MOTION ACCURACY OF CNC MACHINE TOOLS, Gabriel Johnston, Yoshihito Kagawa, Jiancheng Liu, Masahiko Mori, Kazuo Yamazaki, Proceedings of American Society of Precision Engineering 2001 Annual Meeting, pp. 144- 147, 2001.

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digital twin-based designing of the configuration, motion

Digital twin-based designing of the configuration, motion

Two key enabling technologies for enabling the customized and software-defined design of flow-type smart manufacturing systems are presented, including the generalized encapsulation of the quad-play CMCO model and the digital twin technique. Abstract Digital twins can achieve hardware-in-the-loop simulation of both physical equipment and cyber model, which could be used to avoid the Fraunhofer-Publica List: Dambon, Olaf Surface integrity in ultra-precision grinding of transparent ceramics Glass material modeling and its molding behavior Numerical modeling-based design of the ‪Shaojian Zhang‬ - ‪Google Scholar‬ A novel ductile machining model of single-crystal silicon for freeform surfaces with large azimuthal height variation by ultra-precision fly cutting Z Sun, S To, S Zhang International Journal of Machine Tools and Manufacture 135, 1-11 , 2018

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experimental study on the reliability and the precision

Experimental study on the reliability and the precision

The development of high-reliability, high-precision large-scale CNC ultra-precision grinding machines is essential for the efficient processing and manufacturing of large-diameter optical components. In this paper, we studied the reliability and the precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor performance were identified Ultra-Precision Machining of a Compound Sinusoidal Grid Precision machining of ‘water-drop’ surface was proposed by Quanli Zhang et al. using single point diamond grinding, that investigated the linkage movement of the machine to grind the ‘water-drop’ surface and presented methods to compensate the alleviation of the center dent error, based on the proposed methods, the form accuracy and Modeling and simulation of silicon wafer backside grinding DOI: 10.1109/ICEPT.2014.6922787 Corpus ID: 14591577. Modeling and simulation of silicon wafer backside grinding process @article{Li2014ModelingAS, title={Modeling and simulation of silicon wafer backside grinding process}, author={Zhaoqiang Li and X. Jing and F. Jiang and W. Zhang}, journal={2014 15th International Conference on Electronic Packaging Technology}, year={2014}, pages={874-877} }

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ultra-precision

Ultra-Precision

Contact mode machining (contact loading), Ultra-precision grinding vs ultra precision cutting, Single point diamond cutting and its salient features. July 6th, 2016 Lecture 5: 10:30 AM to 11:30 AM Limitations of diamond machining, Listing of elements from the periodic table to understand what's diamond machinable, characterisation and Junjie Zhang Jianguo Zhang Editors Simulation and Experiments Cutting Mechanism and Surface Formation of Ultra-Precision Raster Fly Cutting..103 Guoqing Zhang and Suet To Modeling and Experimental Study of Surfaces Optoelectronic Elements from Crystal Materials in Polishing..129 Yu. D. Filatov Advanced Applications of Elliptical Vibration Cutting A OPC 2020: Optics Ultra Precision Manufacturing and Testing 11568 0P High precision monoscopic fringe reflectometry based on a reference plane [11568-31] 11568 0Q Development trend of aspheric test optical design [11568-33] 11568 0R Research on machining path planning method for aspheric surfaces in two-dimensional ultrasonic elliptical vibration grinding [11568-34]

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modeling and numerical simulation of the grinding temperature

Modeling and Numerical Simulation of the Grinding Temperature

In this research, the heat transfer model of surface grinding temperature field with nanoparticle jet flow of MQL as well as the proportionality coefficient model of energy input workpiece was established, respectively. The numerical simulation of surface grinding temperature field of three workpiece materials was conducted. Research on High-Precision Form Grinding Technology of Gear Set the equation of theoretical involute of the right tooth profile is. When the position deviation of grinding wheel is ,, the actual tooth profile after manufacture is. From any point of the actual tooth profile tangent for the rolling circle, as the tangent point, the angle between the straight line and the axis is Finite element analysis of deflection and residual stress on Sato H, Tian Y B, Shimizu J and Zhou L Study on ultra-precision machining process of silicon-based etalon: effects of diamond grinding on breakage of ultra-thin etalon Proc. 3rd Asian Symp. for Precision Engineering and Nanotechnology (ASPEN2009) (10–13 November 2009, Japan. Google Scholar

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cirp

CIRP

The design rules, patterns or principles, quoted here from various authors, are all time-proven insights, to get reproducible results with ultra precision machines and instruments. Modeling and analysis of different concepts, systems, and components is required to adapt the progressing design or to confirm its adequacy. A dynamics-driven approach to precision machines design for affecting the performance of the precision machines and machining processes. This paper begins with a brief review of the design principles of precision machines with emphasis on machining dynamics. Then design processes of precision machines are discussed, and followed by a practical modelling and simulation approaches. Two case Recurrent ANN-based modelling of the dynamic evolution of the Grinding is critical in modern manufacturing due to its capacity for producing high surface quality and high-precision parts. One of the most important parameters that indicate the grinding quality

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experimental research on grinding of hard-mental yg6 with

Experimental Research on Grinding of Hard-mental YG6 with

SL-500 ultra-precision surface grinding machine spindle system dynamics modeling and analysis of static and dynamic characteristics,TG582 Simulational and Experimental Research on High Speed External Cylindrical Grinding of Difficult-to-Cut Materials ,TG580.6 Modelling and simulation of mid-spatial-frequency error A surface topography simulation model for the generation of MSF errors was established first. Based on which, orthogonal simulation experiments were designed and conducted for the following three parameters, i.e., tool influence function (TIF), path type, and path spacing. Experimental Evaluation on Grinding Texture on Flank Face in Also the grinding data are generated by the models and tested by a grinding simulation for safety reasons. Then, a set of chamfer cutting tools are machined in a five-axis CNC grinding machine, and consist of five angles between the cutting edge and the grinding texture on the 1st flank faces, i.e., 0°, 15°, 30°, 45° and 60°.

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[pdf/epub] surface generation in ultra precision diamond

[Pdf/ePUB] Surface Generation In Ultra Precision Diamond

Complex optical surfaces, for example, can be produced without the need for post-machining polishing. This book focuses on the aspect of modelling nano-surface generation in ultra precision SPDT. Potential industrial applications in the prediction of surface quality, the process optimization, and precision mould manufacturing are also studies. JSPE CAD/CAM, Simulation, 3R, Concurrent Engineering ・ Green and Sustainable Manufacturing and Technologies Low power manufacturing, Low energy consumption ・ Control and Ultra Precision Positioning Control theory, Monitoring, Simulation ・ Precision Measurement and Calibration 3D measurement, Surface, Laser, SPM, Standard ・ MEMS/NEMS Simulation Gets Real | Modern Machine Shop Other technology is moving beyond even G-code-level simulations of faithfully rendered equipment. The MultiGrind Styx system from Haas Multigrind LLC, a builder of precision grinding machines that are popular among medical manufacturers, is designed to replicate the real-world physics of material removal on an even more granular level by, essentially, doing the math required to eschew

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curvature effect on surface topography and uniform scallop

Curvature effect on surface topography and uniform scallop

High-precision optical components with complex shapes or microstructures have been extensively used in numerous fields such as biomedicine, energy and aerospace. In order to accurately achieve the specific functions of the components, the form accuracy and uniform surface quality need to reach an ever-high level. To achieve this, ultra-precision normal grinding is used for machining various Numerical simulation of polygonal spiral curved pipe with For the solid-liquid two-phase abrasive flow processing the polygonal spiral curved pipe, it is necessary to select the Mixture model based on the double-precision parallel solver. The solid phase is set to silicon carbide with a density of 3170 kg/m 3 , and the liquid phase is set to oil with a density of 1260 kg/m 3 . Design and Analysis of a Compact Precision Positioning Figure 9 is the first three order mode shapes of the precision positioning platform, corresponding to the first three order natural frequencies of 1,870, 2,499 and 4,597 Hz, respectively. Based on the analysis mentioned above, the structure has a high first order frequency of 1,870 Hz and it can be used at high frequency condition.

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cfd-based design and analysis of air-bearing-supported paint

CFD-based design and analysis of air-bearing-supported paint

Computational fluid dynamics (CFD)-based simulation is applied in the approach. Accordingly, CFD simulation-based design and analysis are undertaken, covering the characteristic factors of velocity, pressure of the air supply, rotational speed of the air-turbine, and torque and force reaction on the turbine blades. Numerical analysis and experimental study on micro-holes in In order to solve the problem that the aperture of the small hole part is too small and the irregular shape of the surface is difficult to be processed. A solid - liquid two - phase abrasive grain polishing method is proposed. Based on the standard model and SIMPLEC algorithm, the numerical simulation of the surface of the micro – holes were carried out under different inlet speed conditions Modeling of residual tool mark formation and its influence on A 3D surface generation model for repair contours is proposed to predict the profiles of residual tool marks on micro ball-end milled surfaces, and then a numerical FEM model adopting the calculated profiles of residual tool marks is established to investigate the light intensification inside KDP optics based on electromagnetic theory.

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sample pages micro injection molding

Sample Pages Micro Injection Molding

Sample Pages Micro Injection Molding Guido Tosello ISBN (Book): 978-1-56990-653-8 ISBN (E-Book): 978-1-56990-654-5 For further information and order see Recent Advances in Mechatronics | Ryszard Jablonski | Springer The main research task for mechatronics is development and control of advanced hybrid systems covering all these fields and supported by interdisciplinary studies. This book presents recent state of advances in mechatronics presented on the 7th International Conference Mechatronics 2007, hosted at the Faculty of Mechatronics, Warsaw University Method for Grinding State Monitoring of Novel Point Grinding Abstract: A method for grinding state real-time monitoring of a novel point grinding wheel was proposed based on the acoustic emission(AE) signal. The correspondence between surface roughness and the AE signals were established, which provided the condition for monitoring the surface roughness.

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numerical and experimental determinations of contact heat

Numerical and experimental determinations of contact heat

The numerical model presented in this research can be divided into three major parts, including surface geometry, mechanical modeling and thermal modeling, and has been introduced in detail by Frekers et al. 17 Based on the presented numerical model, simulations of contact heat transfer are performed by a self-written MATLAB program. MANUFACTURING LETTERS › doi › full by CH Li - ‎2013 - ‎Cited by 47 - ‎Related articles Apr 21, 2013 - In this research, the heat transfer model of surface grinding temperature field with nanoparticle jet flow of MQL as well as the proportionality coefficient model of

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editorial board - advances in industrial and manufacturing

Editorial Board - Advances in Industrial and Manufacturing

Ultra-precision Machining, Diamond Turning, Optics Machine Learning, Model Based Control, Numerical Simulation. Philip Koshy, PhD. grinding, electrical GitHub - PaoPaoRobot/IROS2019-paper-list: IROS2019 paper list IROS2019-paper-list. The 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2019) has been held on November 4 – 8, 2019 in The Venetian Macao, Macau, China. IROS is one of the largest and most impacting robotics research conferences worldwide. It brings an international community of researchers, educators and The effect of the chuck shape on the wafer topography in back In this paper, the mathematical model of the wafer topography in BGWOR was developed. With this model, the radial thickness and total thickness variation (TTV) of a wafer under different parameters, including inclination angles and radii of grinding wheel for dressing chuck, were simulated by MATLAB.

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stephen ludwick

Stephen Ludwick

Stephen Ludwick has served as an Adjunct Faculty in the department since 2007. He is a practicing design engineer focusing on the design and control of high-accuracy motion control systems. He is presently employed by Aerotech, Inc. in Pittsburgh, PA. Freeform optics for imaging - OSA Publishing In the last 10 years, freeform optics has enabled compact and high-performance imaging systems. This article begins with a brief history of freeform optics, focusing on imaging systems, including marketplace emergence. The development of this technology is motivated by the clear opportunity to enable science across a wide range of applications, spanning from extreme ultraviolet lithography to Study on traceability and suppression method of medium Tips for preparing a search: Keep it simple - don't use too many different parameters. Separate search groups with parentheses and Booleans. Note the Boolean sign must be in upper-case.

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departments | research programme @ iit madras

Departments | Research Programme @ IIT Madras

Modeling of rotary kilns, crushing and grinding equipments, fluid energy mills of Microelectronic fabrication techniques. Development, characterization and processing of materials: Characterization of materials by light and electron microscopy. Development of polymer blends and composites, polymer based nano-composites. ‪Beaucamp Anthony‬ - ‪Google Scholar‬ Use of the ‘Precessions’™ process for prepolishing and correcting 2D & 2½D form. DD Walker, R Freeman, R Morton, G McCavana, A Beaucamp. Optics Express 14 (24), 11787-11795. , 2006. 84. 2006. Novel CNC polishing process for control of form and texture on aspheric surfaces. Emerson E175216 User Manual to model the cables. Supported throughout by illustrations, circuit diagrams and simulation results, each chapter contains exercises, solutions and examples in order to develop a practical understanding of the topics. Harmonic analysis of cable-based networks and instructions on how to accurately model a cable-based

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experimental study on the reliability and the precision

Experimental study on the reliability and the precision

The development of high-reliability, high-precision large-scale CNC ultra-precision grinding machines is essential for the efficient processing and manufacturing of large-diameter optical components. In this paper, we studied the reliability and the precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor performance were identified The Dynamics Modeling and Simulation of Spindle System of The Dynamics Modeling and Simulation of Spindle System of Ultra-High Speed Grinding Machine Tool Hou, Ya Li, Li, Chang He Atomic Step Formation on Sapphire Surface in Ultra-precision The sapphire is often used as a substrate in the integrated circuits industry, optoelectronic industry and for many scientific applications 1,2,3,4,5,6,7,8,9,10,11.For film and epitaxy, the

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national engineering research center of precision and ultra

National Engineering Research Center of Precision and Ultra

Including: precision and reliability design of high-grade precision NC machine tool and functional component, engineering analysis computation, performance optimization and simulation, dynamic and static characteristic analysis and integrated testing and evaluation of high speed precision spindle, precision modeling of precision NC machine tool Generic Kinematic Model Based Volumetric Error Simulation for Department of Ultra-Precision Machine and System, Korea Institute of Machinery and Materials, Daejeon, Koreaa. View Profile, Molecular Dynamics Simulation on Cutting Mechanism in the Zhang X (2012) A study of elliptical vibration cutting in ultra precision machining. Ph.D Thesis, National University of Singapore, p 154. 41. Zhang X, Kumar AS, Rahman M, Liu K (2013) Modeling of the effect of tool edge radius on surface generation in elliptical vibration cutting. Int J Adv Manuf Technol 65:35–42

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stiffness model and experimental study of hydrostatic spindle

Stiffness Model and Experimental Study of Hydrostatic Spindle

For high-end CNC machine tools, the stiffness of the spindle system is one of the most important performance indicators. In this paper, the hydrostatic motorized spindle system of a grinding machine is taken as the research object, and a two-degree-of-freedom stiffness model of the spindle system considering rotor swing is proposed. WSEAS The kinematics and dynamics models of four corners leveling system based on ADAMS were established, while electro-hydraulic control system model based on AMESim was built. The above-mentioned simulation models formed the united simulation models for four corners leveling system. Bearing solutions for super-precision performance The SKF Spindle Simulator is an advanced simulation software program for the analysis of spindle applications. It supports the analysis of spindles and contains detailed models of the new harmonised SKF super-precision bearings. Based on the SKF Simulator platform and using the same advanced technology, it

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publications | iit mechanical

Publications | IIT Mechanical

Sonawane H., Joshi S.S.,Modeling of chip geometry in ball-end milling of superalloy using strains in deformed chip (SDC) approach,International Journal of Machine Tools and Manufacture,130-131,,2018,49. Dr. Ramesh Kumar K. - Amrita Vishwa Vidyapeetham Simulation Modeling and Development of Analytic Hierarchy Process (AHP) based Priority Dispatching Rule (PDR) for a Dynamic Press Shop . Authors : Dr. Ramesh Kumar K., M. Thennarasu; Prakash, M. Publisher : International Journal of Industrial and systems engineering DC4223 FinalPaper 2016-04-11 15.24.34 SFUGDY Throughout the ultra fine grinding method processing principle is shown in figure 2 [7]. Because of the guide roll along the axial processed into many type curve surface and roller with multiple curve between the two guide roller track, the roller is at the top of the crown after the oil-stone

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an investigation on high-resolution temperature measurement

An Investigation on High-Resolution Temperature Measurement

The machining experiments were performed on a Moore Nanotech 350FG (Swanzey, USA). This ultra-precision machine tool has an air-bearing main spindle and a hydrostatical supported Y-axis. In order to avoid environmental errors, the machine was operated under laboratory conditions at a controlled temperature of 20 °C. [Pdf/ePUB] Surface Generation In Ultra Precision Diamond Complex optical surfaces, for example, can be produced without the need for post-machining polishing. This book focuses on the aspect of modelling nano-surface generation in ultra precision SPDT. Potential industrial applications in the prediction of surface quality, the process optimization, and precision mould manufacturing are also studies. Ultra-Precision Polishing - Explore the Science & Experts The Ultra-Precision Polishing assisted by the ultraviolet rays irradiation was performed to achieve the atomic-scale planarization of the single crystal diamond substrates. This Polishing method is a novel and simple Polishing method characterizing by a quartz disk and an ultraviolet irradiation device. The principle three crystal planes of the

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why particle methods work | siam journal on scientific and

Why Particle Methods Work | SIAM Journal on Scientific and

(2018) Smoothed particle hydrodynamics simulation and experimental analysis of SiC ceramic grinding mechanism. Ceramics International 44 :11, 12194-12203. (2018) Manuscript numerical simulation on ultra-precision polishing of monocrystalline silicon by SPH method. Grinding Chatter Detection and Identification Based on BEMD Grinding chatter is a self-induced vibration which is unfavorable to precision machining processes. This paper proposes a forecasting method for grinding state identification based on bivarition empirical mode decomposition (BEMD) and least squares support vector machine (LSSVM), which allows the monitoring of grinding chatter over time. MOHAMMAD ZAREINEJAD - Amirkabir University of Technology Hamed Ghafarirad, S.Mehdi Rezaei, Amir Abdullah, Mohammad Zareinejad, Mozafar Saadat, "Observer-Based Sliding Mode Control with Adaptive Perturbation Estimation for Micropositioning Actuators", PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY, April 2011 Vol. 35, Num. 2, Page 271-281, April 2011,

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international journal of modeling, simulation, and scientific

International Journal of Modeling, Simulation, and Scientific

The numerical simulation model of medium flow based on Particle Flow Code (PFC) was established. By setting four kinds of working conditions of amplitude and frequency, the dynamic graphics and curves of the energy field (such as kinetic energy, strain energy, velocity field, force chain and so on) were obtained. TensorQuant – Simulation of Deep Learning Models - Fraunhofer TensorQuant Allows the Simulation of Machine Learning Hardware. In the development of Deep Learning applications on specialized hardware, difficulties are encountered as the minimum requirements for computational precision vary significantly between the individual models. Redesigning CAM-SE for peta-scale climate modeling CAM on Sunway achieves the simulation speed of 3.4 and 21.5 simulation-year-per-day (SYPD) for global 25-km and 100-km resolution respectively; and enables us to perform, to our knowledge, the first simulation of the complete lifecycle of hurricane Katrina, and achieve close-to-observation simulation results for both track and intensity.

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fuel injector holes - energy

Fuel Injector Holes - Energy

that would be used for cost effectively producing ultra-small holes and controlling dimensions with ultra precision – Materials and coatings to resist fatigue, wear, and corrosion; sensors and controls; non-traditional fuel injection; modeling and simulation, etc. Improving technological machining simulation by tailored Geometric modelling is an established approach for gathering detailed knowledge about the chronological sequence of process conditions and for determining technological values of machining processes such as milling, turning, grinding or additive manufacturing. Rolling Resistance and Mechanical Properties of Grinded Mechanical properties of copper (Cu) film under grinding process were accomplished by molecular dynamics simulation. A numerical calculation was carried out to understand the distributions of atomic and slip vector inside the Cu films. In this study, the roller rotation velocity, temperature, and roller rotation direction change are investigated to clarify their effect on the deformation

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jtekt engineering journal

JTEKT ENGINEERING JOURNAL

Please click "View" button when you cannot open the PDF file. Volumes | ASME International Mechanical Engineering Congress Topics: Optimization , Production systems optimization , Casting , Data acquisition , Computer simulation , Computer software , Data collection , Modeling , Simulation Computational Optimization of Arc Welding Parameters Using Coupled Genetic Algorithms and Finite Element Method The research of polishing nozzle quality based on discrete 5. Conclusions. 1) Based on the study of solid-liquid two-phase abrasive polishing nozzle with discrete element method, the particle model and theory are described. Through the numerical simulation of DEM, the collision of particle-particle and particle-wall during the simulation process was analyzed.

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flexible multi-node simulation of cellular mobile

Flexible multi-node simulation of cellular mobile

The investigation and prediction of new trends and technologies for mobile cellular networks is of utmost importance for researchers and network providers to quickly identify promising developments. With the verge of the fifth generation of mobile communications (5G), networks become more and more heterogeneous and dynamic while the amount of active users within a cell keeps ever increasing The OpenEar library of 3D models of the human temporal bone Virtual reality surgical simulation of temporal bone surgery requires digitized models of the full anatomical region in high quality and colour information to allow realistic texturization. MAGNETORHEOLOGICAL FINISHING | International Journal of Abstract. The technology of finishing for optics, ceramics, and semiconductors is one of the most promising uses of the magnetorheological effect. It perfectly coupled with computer control, allowing in quantity production the unique accuracy and quality of a polished surface to be achieved. The polishing process may appear as follows.

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micro-machining | philosophical transactions of the royal

Micro-machining | Philosophical Transactions of the Royal

4. Ultra-precision grinding. Although the evolution of diamond machining has not yet reached its final stage, the main concern today is an improvement in productivity rather than an increase in flexibility and accuracy. In ultra-precision grinding, the situation is different . In fact, similar ultra-precision machining equipment is used for Research HP of Fang: Metallic Glass + Gear Gear skivng: Numerical simulation A boundary-based level contour method. Fang Z*, Ren Z, Kizaki T, Feng Y, Kugo J, Komatsu Y, et al. Construction of uncut chip geometry in gear skiving using level contours. Precis Eng 2021;73:93–103. 3D Systems’ ProJet® 3510 and VisiJet® Pearlstone Material - Seamless integration with 3Shape Model Builder software for 3D model production with high accuracy, precision and ease of use - Onlin ROCK HILL, South Carolina – May 29, 2014 – 3D Systems (NYSE:DDD) today announced its ProJet ® 3510 MP 3D printer and proprietary VisiJet ® Pearlstone dental material have been verified by 3Shape for

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innovation - fives group

Innovation - Fives Group

The crux of innovation today is the ability of manufacturers to respond quickly – almost instantly – to the market's needs. As the pace of innovation increases around the world, how has Fives, a global group with more than 8,000 collaborators in 30 countries, developed its agility in order to reinvent industrial equipment and processes for more than 200 years? A novel Deal–Grove‐inspired model for fluorine‐based plasma The Deal–Grove model is a state‐of‐the‐art approach proposed for describing the thermal oxidation of silicon and the oxide thickness over time. In this study, the Deal–Grove concept provided the inspiration for a mathematical model for simulating plasma jet‐based dry etching process of borosilicate crown glass (N‐BK7®). Fives strong expertise in digital twins - Fives Group Unlike a conventional simulation model, a digital twin interacts in real time with the physical data it is sent by production facilities: enriched by a machine learning layer, the digital twin constantly improves, enhances its mathematical model based on the actual data it receives, and in turn adapts and optimizes the production parameters and

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numerical study of the turbulent flow past an airfoil with

Numerical study of the turbulent flow past an airfoil with

Numerical simulation of viscoelastic flows during injection mold filling based on Rolie–Poly model Journal of Non-Newtonian Fluid Mechanics, Vol. 263 Developing a framework for improvement of building thermal performance modeling under urban microclimate interactions Journal of the European Optical Society-Rapid Publications Stimulated Raman scattering simulation for imaging optimization. Two simulation programs of a stimulated Raman scattering microscopy (SRS) imaging system with lock-in amplifier (LIA) detection were developed. SRS is an imaging technique based on the vibrational Raman cross- Proceedings of 2017 IEEE 2nd Advanced Information Technology Modeling and Simulation on the Compatibility of Ship-to-Air Missile and Chaff Centroid Jamming in Cooperative Air-Defense Study on Automatic Alignment Algorithm in Rail Grinding of Rail head Profile Track Irregularities Estimation Based on the Vibration of Car-body

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