Article
Engineering, Industrial
Jiankai Jiang, Tong Luo, Guoqing Zhang, Yuqi Dai
Summary: A novel offset-fly-cutting-servo (OFCS) machining system was developed for fabricating straight-groove-type micro structure arrays without the Y-axis, showing effective results with well-matched morphology between machined and designed arrays. The mathematical model, machining scheme, and cutting experiments provided theoretical reference for complex micro structure arrays machining.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Industrial
Guoqing Zhang, Yuting Ma, Tong Luo, Shuaikang Cao, Zejia Huang
Summary: In this study, a novel vibration-assisted tool end fly cutting technique is proposed to machine linear micro-groove structure and hierarchical micro-structure surface. Through the synergy of tool end fly cutting and servo-vibration platform, a uniform and consistent micro-groove structure surface can be generated.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Wenyu Ding, Mingjun Chen, Jian Cheng, Henan Liu, Linjie Zhao, Hao Yang, Xumeng Cheng, Zhichao Liu, Qiao Xu, Chao Tan
Summary: A defect-induced laser damage explosion model was constructed to investigate the limitations of surface defects on the application of KDP optics in laser fusion facilities and to reveal the laser-induced damage mechanisms. The model successfully reproduced the dynamic damage process of protuberance defects on the KDP crystal surface and explained the characteristics of laser damage observed in experiments.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Analytical
Chenhui An, Ke Feng, Wei Wang, Qiao Xu, Xiangyang Lei, Jianfeng Zhang, Xuelian Yao, Haibo Li
Summary: The study investigates the cutting mechanism of KDP crystal. Firstly, the stress field, cutting force and cutting temperature under different working conditions are calculated by a simulation model. Then, the rules and interaction mechanisms of force and temperature are analyzed by comparing experiments with simulations, and the causes of chip formation and micro-cracks are analyzed based on thermo-mechanical coupling and chip morphology.
Article
Materials Science, Multidisciplinary
Ning Yang, Xin Yang, Wen Huang, Shun Zhao, Dajiang Lei
Summary: This paper reveals the wear mechanism of diamond tools in KDP flying cutting through stress analysis and mechanical analysis, emphasizing the significant impact of wear on the processing quality and efficiency of KDP.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Geological
Weijian Liang, Jidong Zhao, Huanran Wu, Kenichi Soga
Summary: A novel computational multiscale approach is used to investigate the pullout of plate anchors from granular sands. The study reveals the significant impact of factors such as relative density of sand and embedment depth on the bearing capacity and pullout behavior. This approach provides insights into the macroscopic observation of anchor pullout and offers comparisons with previous studies.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Jianguo Zhang, Yufan Fu, Xiao Chen, Zhenfeng Shen, Junjie Zhang, Junfeng Xiao, Jianfeng Xu
Summary: In this research, the physical properties of RB-SiC were investigated through high-temperature nano-indentation experiments, and the deformation process during ultraprecision machining was studied. The influence of temperature on the material deformation and the transition from brittle to ductile behavior were examined. The findings were revealed through scanning electron microscopy and transmission electron microscopy observations of the machined surface/subsurface.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Review
Engineering, Manufacturing
Bing Wang, Zhanqiang Liu, Yukui Cai, Xichun Luo, Haifeng Ma, Qinghua Song, Zhenhua Xiong
Summary: This paper reviews the research and application of high speed metal cutting (HSMC) with a focus on material removal mechanism, cutting force and temperature variations, and summarizes the advantages and shortcomings of HSMC.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Chemistry, Physical
Sia A. Nourani, Dirk J. Pons, Digby Symons, Senlin Zhang
Summary: This study investigated the effect of thickness tolerance, tool misalignment, and sheet placement on the clinching process using analogue modelling with plasticine. The results showed that thickness tolerance and angular misalignment reduced the interlock. Silicone oil tests exhibited lower interlock compared to glycerine, possibly due to a lower coefficient of friction.
Article
Materials Science, Multidisciplinary
Chuangting Lin, Wenbin He, Xiao Chen, Zhengding Zheng, Kai Huang, Weiqi Huang, Jianguo Zhang, Jianfeng Xu
Summary: Laser assistance and the use of a diamond tool with a negative rake angle are effective methods for machining hard and brittle materials. This paper investigates the ductile removal mechanism of fused silica, develops a cutting force model and a smoothed particle hydrodynamics (SPH) model, and performs in-situ laser assisted diamond cutting (LADC) experiments to examine the critical depth of cut, cutting force, and surface quality.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Multidisciplinary
Honglu Li, Xinming Fang, Zijian Zhu, Wenpeng Fu, Chenyang Zhao
Summary: Micro-vision positioning measurement utilizes optical microscopy and computer vision for noncontact, high-precision measurements. The influence of microstructure surface topography on measurement resolution is investigated and a suitable topography, referred to as anchor microstructure, is deduced. Experimental results demonstrate that anchor microstructures obtained through ultra-precision cutting are ideal targets for high-resolution vision positioning measurements. The method is proven to be feasible through positioning performance verification experiments.
Article
Engineering, Manufacturing
Ruitao Zhang, Zhanfeng Wang, Zengqiang Li, Shilei Wu, Junjie Zhang, Tao Sun
Summary: This study introduces a novel approach using the diamond dynamic micro tensile strength theory to establish a grinding factor prediction model for any position on the flank face of rounded diamond cutting tools. Experimental investigations reveal pronounced anisotropy on the flank of the diamond tool during mechanical grinding, and the modified grinding factor model shows excellent agreement with the observed change in the material removal rate.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Industrial
Yuhan Chen, Linhe Sun, Yongbo Wu
Summary: Using straight-nosed cutting tools can reduce cut thickness, cutting force, and heat flux density, leading to decreased tool wear and smoother machined surface, enhancing cutting efficiency.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Zhanwen Sun, Shijun Xu, Jie Jiao, Sujuan Wang, Suet To, Peizheng Li
Summary: In diamond servo cutting (DSC) of microstructured surfaces, the oscillated cutting motion leads to non-uniform surface deformation errors. This study proposes a microstructured surface generation model considering dynamic cutting forces, material microstructure evolution, thermal-mechanical coupling effect, and subsurface stress-strain distribution. Experimental results show that the proposed model accurately simulates surface deformation errors and a cooperative servo cutting (CSC) strategy is effective in compensating these errors.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Manufacturing
Qi Liu, Jian Cheng, Zhirong Liao, Xichun Luo, Yue Yang, Mingquan Li, Hao Yang, Chao Tan, Guangzhou Wang, Wenyu Ding, Zhaoyang Yin, Linjie Zhao, Mingjun Chen
Summary: In the Inertial Confinement Fusion facilities, single-point diamond fly-cutting and micro ball-end milling are used to fabricate and repair the large-aperture KDP (KH2PO4) optics. However, the effects of surface textures on the optical performance of machined optics are still unclear. This study analyzed the light intensity modulation inside KDP machined by these processes and investigated the characterizing methods of surface textures. It was found that high-amplitude and small spatial period surface textures resulted in severe light intensity modulation and the relative directions of textures on the front and rear surfaces also had an effect. Texture direction, power spectrum density (PSD), and fractal dimension were used for characterization.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2023)