共搜索到1816条信息,每页显示10条信息,共182页。用时:0小时0分0秒313毫秒
Optimization of ultrasonic elastography by coded excitation and transmit-side multi-frequency compoundingZHANG Zhi-hong(张志宏)1, LIU Hao-lin(刘昊霖)1, HE Ying-ni(何颖妮)1, Liu Dong-quan(刘东权)1, 2(1. College of Computer Science, Sichuan University, Chengdu 610065,China;2. Saset Healthcare Inc, Chengdu 610041, China)Abstract:To improve the quality of ultrasonic elastography, by taking the advantage of code......
......
Effect of electromagnetic and ultrasonic cast rolling on microstructure and properties of 1050 aluminum substrate for presensitized plateSHI Chen(石琛)1, 2, MAO Da-heng(毛大恒)2, FU Zong-li(扶宗礼)2(1... 410083, China)Abstract:The 1050 aluminum alloy strip was prepared by means of electromagnetic and ultrasonic cast rolling on the modified asymmetric twin roll caster, and then the aluminum substrate......
In situ (Mg2Si+MgO)/Mg composites fabricated from AZ91-Al2(SiO3)3 with assistance of high-energy ultrasonic field ZHANG Song-li(张松利), ZHAO Yu-tao(赵玉涛), CHEN Gang(陈 刚) School of Materials Science... high-energy ultrasonic field were investigated by XRD, DSC and SEM. The results indicate that the size, morphology and distribution of the in situ Mg2Si particles are greatly optimized......
Defects detection in typical positions ofbend pipes using low-frequency ultrasonic guided waveLUO Geng-sheng(罗更生)1,2, TAN Jian-ping(谭建平)1, WANG Liang(汪亮)3, XU Yan(许焰)4(1. School of Mechanical... of detecting defects in bend pipe using low-frequency ultrasonic guided wave, the propagation of T(0,1) mode and L(0,2) mode through straight-curved-straight pipe sections was studied. FE (finite element......
Effects of ultrasonic vibration on solidification structure and properties of Mg-8Li-3Al alloy YAO Lei, HAO Hai, JI Shou-hua, FANG Can-feng, ZHANG Xing-guo School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China Received 11 June 2010; accepted 5 January 2011 Abstract: Ultrasonic vibration was introduced into the Mg-8Li-3Al alloy melt during......
J. Cent. South Univ. Technol. (2007)03-0363-07 DOI: 10.1007/s11771-007-0072-6 Effects of ultrasonic treatment...; Abstract: The experiment of ultrasonic treatment of roll......
ULTRASONIC SEPARATION OF MICRO-SIZED INCLUSIONSIN MOLTEN METAL X.Q.Bai1,J.C.He1 (1.Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, NortheasternUniversity, Shenyang 110004, China) Abstract:The coagulation time and position of micro-sized non-metallic inclusions in molten metal during ultrasonic separation process were investigated, and the motion......
Preparation of silver nanoparticle via active template under ultrasonic ZHENG Min(郑 敏)1, WANG Zuo-shan(王作山)2, ZHU Ya-wei(朱亚伟)1 1. College of Material Engineering, Soochow University, Suzhou... for the production of silver nanoparticle by using nano-carbon as active template. Special ultrasonic condition was used to assure the active effect of the template and achieve an even and stable micro-reactor......
Microstructure Evolution of AS41 Magnesium Alloy Fabricated by Ultrasonic Vibration张志强The Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University摘 要:The effects of ultrasonic vibration on the grain size and morphology of Mg2Si in Mg-4 wt% Al-1 wt%Si(AS41) alloys designed were evaluated. The results show......