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an 710129,China摘 要:The flat cylindrical indentation tests with different sizes of punch radius were investigated using finite element method(FEM) aimed to reveal the effect of punch size on the indentation behavior of the film/substrate system.Based on the FEM results analysis,two methods was proposed to separate film s reduced Young s modulus from......
:1672-7207(2013)11-4643-09 Effect of sample preparation error on direct shear test of rock mass discontinuities YONG Rui, HU Xinli, TANG Huiming, LI Changdong, WU Qiong (Faculty of Engineering, China University of Geosciences, Wuhan 430074, China) Abstract: On the basis of the relative positions of direct shear test shear direction and sample error angle, the improved deducing processes of shear strength......
, all under comparable conditions. Some rheological experiments have been performed with shear jump test after a defined pre-shearing time to determine the material flow curve. The influence... Modeling of shear induced coarsening effects in semi-solid alloys M. MODIGELL1, A. POLA2 1. AVT, Chair of Mechanical Process Engineering, RWTH Aachen University, Turmstr. 46, D 52056 Aachen......
temperature and high temperature (300 °C). The results of microstructure characterization by SEM and shear strength test revealed that the joints between the layers of 4-pass ECAPed samples were... electron microscope (SEM) and X-ray diffraction (XRD). The shear strength of the joints was also measured by shear strength test and the results were compared to each other. 2 Experimental The materials used......
Trans. Nonferrous Met. Soc. China 22(2012) s534-s541 Effect of tool temperature and punch speed on hot stamping of ultra high strength steel LIU Wei1, 2, LIU Hong-sheng3, XING Zhong-wen3, LIU Gang1... at elevated temperatures were characterized and the corresponding material constitutive, which is strain, strain rate and temperature dependent, is developed on the basis of unaxial tensile test......
for four times, the relationship among the peak shear strength, shear test times and normal stress and between the roughness coefficient and shear test times were analyzed. A new shear strength criterion and roughness coefficient CJR degradation criterion were proposed considering the effects of both the normal stress and test times. The results show that the peak shear stress decreases gradually......
Elastic-plastic properties of thin film on elastic-plastic substrates characterized by nanoindentation test JIANG Li-mei(蒋丽梅)1, 2, ZHOU Yi-chun(周益春)2, HUANG Yong-li(黄勇力)2 1. College of ...; nanoindentation test; dimensionless analysis; finite element analysis 1 Introduction Thin films are ubiquitous in modern technology, from integrated circuits to thermal barrier coatings, due to its high......
and shape (aspect ratio) was acquired through this analysis. 2.3 Interlaminar shear strength tests(ILSS) Interlaminar shear strength tests were conducted following the GB/T 3357-1982 (short beam shear test... Influence of voids on interlaminar shear strength of carbon/epoxy fabric laminates ZHU Hong-yan(朱洪艳)1, LI Di-hong(李地红)1, ZHANG Dong-xing(张东兴)1, WU Bao-chang(吴宝昌)2, CHEN Yu-yong(陈玉勇)1......
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Superplasticity of Mg-Gd-Y alloy in tensile test at elevated temperature XIAO Yang(肖阳), ZHANG Xin-ming(张新明), DENG Yun-lai(邓运来), FAN Xiao-hui(范晓慧) School of Materials Science and Engineering... at temperatures ranging from 623 K to 673 K and constant velocity of the moving clamp of 1 mm/min (the average engineering strain rate of about 4.6×10-4 s-1) in air. After tensile test, one part of the fractured......