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in the T-shape laser welding joint was inspected by ultrasonic testing system adopting independent component analysis(ICA) theory to process the signals.The principle of automatic ultrasonic testing...Feasibility of differentiating defect signals of ultrasonic testing for laser weld based on independent component analysis theoryGUO Liwei,GANG Tie,and LI Jinquan State Key Laboratory of Advanced......
Effect of Ultrasonic Impact on the Microstructure of Welded Joint of 2195 Al–Li AlloyQi-Hao Chen,San-Bao Lin,Chun-Li Yang,Cheng-Lei FanState Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology摘 要:It is known that an ultrasonic impact during tungsten inert gas welding can refine the grains and improve the mechanical properties......
不均匀,对焊接工具头进行微调处理,直至白纸上的压痕清晰均匀为止. 图1 超声焊接试验装置 Fig. 1 Ultrasonic welding test equipment 焊接试验采用单一变量法,在固定其他焊接参数条件下,进行不同超声振幅,焊接压力,焊接时间,材料厚度的超声焊接试验.探究不同工艺参数对异种合金焊接效果的影响. 1.2 抗拉剪切强度力学性能测试试..., 49(3): 695-702. [4] NAMBU S, SETO K, LIN J Y, KOSEKI T. Development of a bonding interface between steel/steel and steel/Ni by ultrasonic welding[J]. Science and Technology of Welding & Joining......
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investigated by a series of experiments. An ultrasonic vibration was imposed on the surface of base material before turning off the welding arc during the TIG welding implemented at a fixed point... applying the ultrasonic treatment. To study the influencing mechanism of ultrasound on heterogeneous nucleation, further investigations were implemented where the welding arc was turned off after......
, ISAYEV A I. In situ ultrasonic compatibilization of unvulcanized and dynamically vulcanized PP/EPDM blends
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Repair welding process of friction stir welding groove defect LIU Hui-jie(刘会杰), ZHANG Hui-jie(张会杰) State Key Laboratory of Advanced Welding Production Technology, Harbin Institute...; Abstract: The groove defect formed in the friction stir welding dramatically deteriorates weld appearances and mechanical properties......
; 文献标志码:A 文章编号:1672-7207(2017)10-2665-07 Effect of minor Sc under ultrasonic vibration... and Engineering, Central South University, Changsha 410083, China) Abstract: Effects of 0-0.5% Sc under ultrasonic vibration technology (UVT) modification on microstructure and mechanical properties......
Driving characteristics of octagon-type ultrasonic motorKIM Jong-Wook, PARK Choong-Hyo, LIM Jung-Hoon, JEONG Seong-Su, PARK Jong-Kyu, PARK Tae-Gone(1. Changwon National University, Sarim-dong, Changwon-si, Gyeongsangnam-do, 641-773, Korea)Abstract:Structure of the octagon-type ultrasonic motor was proposed and designed so as to allow the motor to drive small actuator. The stator of the motor......
