作者：Hongtao Chen^1,2;Shuyao Liu¹;Pai Wang¹;Xibin Wang¹;Zhibing Liu¹;CA1;Fadi Aldakheel²; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;²Institute of Mechanics and Computational Mechanics, Leibniz University Hannover, Appelstrasse 9a, 30167 Hannover, Germany）

出处：Materials & Design 2024

关键词：Stress ratio;Fatigue crack propagation;Twist angle;Schmid factor;Crack tip shielding

摘要：The fatigue load that a material experiences and its microstructure are important factors influencing fatigue crack propagation behavior. This study e ...

作者：Yifan Song¹;Pei Yan²;CA1;Wenxiang Zhao²;Zhibo Guo¹;Huiqing Gu^1,3;Shoufeng Gao¹;Shikun Zou⁴;Xibin Wang²; （¹School of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District, Beijing 100081, PR China;²Key Laboratory of Fundamental Science for Advanced Machining, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District, Beijing 100081, PR China;³State Key Laboratory of Tribology, Institute of Manufacturing Engineering, Department of Mechanical Engineering, Tsinghua University, Haidian District, Beijing 100084, PR China;⁴Science and Technology on Power Beam Processes Laboratory, AVIC Manufacturing Technology Institute, No.¹Chaoyang Road, Chaoyang District, Beijing 100024, PR China）

出处：Tribology International 2024

摘要：Torsional fretting wear is a commonly wear form in assemblies, while its inherent concealment and debris evolution make it difficult to study. Titaniu ...

作者：苏志朋¹;，梁志强¹;，李娟²;，王飞²;，魏正义²;，刘月红²;，金惟薇¹;，马悦¹;，殷振³;，王西彬¹; （¹北京理工大学机械与车辆学院；²内蒙古北方重工业集团有限公司；³苏州科技大学机械工程学院）

出处：机械工程学报 2024

关键词：超声振动；微铣削；微磨削；聚晶金刚石工具；钛合金

摘要：微铣削是实现航空微小零件精密加工的主要方法，但是受尺寸效应影响，使用该工艺加工钛合金等塑性高且强度大的材料时，易产生严重的切削变形以及毛刺等缺陷，影响微小零件加工质量。针对钛合金微槽加工过程中出现塑性变形大以及毛刺损伤严重的问题，提出超声螺线辅助铣磨加工方法，将平面加工轨迹转变为三维螺线，进而实现微 ...

发明人：周天丰，冀天杰，刘朋，郭威佳，颜培，梁志强，刘志兵，解丽静，赵文祥，王西彬

申请日期：2024.04.16

摘要：本发明公开了一种直下式单点入光导光板及背光模组显示设备，直下式单点入光导光板包括导光板本体、第一反射膜和第二反射膜。导光板本体具有入光面和出光面，入光面与出光面位置正对，入光面设置微结构。入光面设有第一凹陷，出光面设有第二凹陷，第一凹陷与第二凹陷位置正对。第一反射膜覆盖入光面，反射膜设有与第一凹陷位 ...

作者：周天丰，张丹梅，刘朋，李沛桓，谢秋晨，李紫薇，王西彬 （北京理工大学医学技术学院；北京理工大学机械与车辆学院；北京理工大学重庆创新中心）

出处：航空制造技术 2022

关键词：超快激光；叉指电极(IDT)；金属薄膜；铳酸锂；声表面波（SAW）

摘要：利用波长1064nm、脉冲宽度10ps、重复频率100kHz的超快脉冲激光，刻蚀了覩酸锂基底上的银铭•双层薄膜，研究了激光能量密度和扫描速度对银珞双层薄膜表面刻蚀沟槽质量的影响以提高沟槽质量。结果表明，激光能量密度5.38J/cn?、扫描速度500mm/s是激光刻蚀沟槽的最佳激光参数，沟槽底部基底完 ...

发明人：周天丰，黄进，刘朋，王思江，汪超，曾子浩，王西彬

申请日期：2023.12.29

摘要：本发明提供一种复杂精密玻璃光学器件的一体模压成形方法，包括：通过对光学器件产品进行结构和光学分析，得到分析结果，并根据分析结果制造一体成形的产品模具；选定光学器件产品的玻璃材料，并根据产品模具选取对应大小的玻璃微球，计算所需玻璃微球体积，并得到所需玻璃微球质量；根据所需玻璃微球质量向产品模具中加入对 ...

作者：Sichen CHEN，Zhiqiang LIANG，Yuchao DU，Zirui GAO，Haoran ZHENG，Zhibing LIU，Tianyang QIU，Xibin WANG （School of Mechanical Engineering, Beijing Institute of Technology；Beijing Institute of Technology Chongqing Innovation Center）

出处：Chinese Journal of Aeronautics 2024

关键词：Robotic milling；Chatter detection；Variational mode decomposition；Information fusion and compression；Chatter featur

摘要：Undesirable self-excited chatter has always been a typical issue restricting the improvement of robotic milling quality and efficiency.Sensitive chatt ...

作者：Hongtao Chen^1,2;Shuyao Liu¹;Pai Wang¹;Xin Jin¹;Xuezhi Li¹;Xibin Wang¹;Zhibing Liu¹;CA1;Fadi Aldakheel²; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China;²Institute of Mechanics and Computational Mechanics, Leibniz University Hannover, Appelstrasse 9a, 30167, Hannover, Germany）

出处：Journal of Materials Research and Technology 2024

关键词：Ultrasonic surface rolling process;Microstructure;Grain refinement;Microhardness

摘要：The microstructure and mechanical properties have a significant impact on the service performance of materials. This paper compared the microstructure ...

作者：Yuchao Du¹;Zhiqiang Liang^1,2;CA1;Zhipeng Su¹;Yue Ma¹;Xu Zhao³;Zhanheng Liu³;Yubin Xiao⁴;Hao Huang⁴;Hao Yuan¹;Tianfeng Zhou¹;Xibin Wang¹; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, PR China;²Zhengzhou Research Institute, Beijing Institute of Technology, Zhengzhou 450000, PR China;³Xi \'an Institute of Electromechanical Information Technology, Xi \'an 710065, PR China;⁴Jianglu Machinery Electronics Group Co. Ltd., Xiangtan 411100, PR China）

出处：Diamond and Related Materials 2024

摘要：The high hardness and wear resistance of polycrystalline diamond (PCD) micro tool make it widely used in precision machining of small parts of difficu ...

作者：周天丰，张丹梅，刘朋，李沛桓，谢秋晨，李紫薇，王西彬 （北京理工大学医学技术学院；北京理工大学机械与车辆学院）

出处：航空制造技术 2022

关键词：超快激光；叉指电极(IDT)；金属薄膜；铌酸锂；声表面波(SAW)

摘要：利用波长1064 nm、脉冲宽度10 ps、重复频率100kHz的超快脉冲激光,刻蚀了铌酸锂基底上的银铬双层薄膜,研究了激光能量密度和扫描速度对银铬双层薄膜表面刻蚀沟槽质量的影响以提高沟槽质量。结果表明,激光能量密度5.38 J/cm~2、扫描速度500mm/s是激光刻蚀沟槽的最佳激光参数,沟槽底部 ...