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Defect-free surface of quartz glass polished in elastic mode by chemical impact reactionPENG Wen-qiang(彭文强)1, 2, GUAN Chao-liang(关朝亮)1, 2, LI Sheng-yi(李圣怡)1, 2(1. College of Mechatronics... by chemical bond generated by impact reaction in the elastic mode, so no defects are generated without mechanical process. Experiment was conducted on a numerically controlled system for nanoparticle jet......
[22] investigated the impact of heating-cooling regimes and curing ages on the compressive properties of ECC after exposure to elevated temperature. The test results indicated that extended heating... with impact of elevated temperatures WANG Zhen-bo(王振波)1, HAN Shuo(韩硕)1, SUN Peng(孙鹏)1,LIU Wei-kang(刘伟康)1, WANG Qing(王庆)2 1. School of Mechanics and Civil Engineering, China University of Mining and Technology......
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content from 3% to 15% (mass fraction) were irradiated by 60Co gamma-ray with various doses (20, 50 and 100 kGy) under ambient conditions. Moisture absorption test, U-notched Charpy impact test and quasi... absorption test, tensile and three point bending tests and U-notched Charpy impact test were performed to the non-irradiated and irradiated PA6/PTFE blends. The moisture absorption was measured......
. Surface subsidence caused by tunnel blasting excavation was computed, and the regulation of the surface subsidence was analyzed. The results show that the tunnel blasting excavation has impact... subsidence; impact load 建设地铁不仅能释放城市地面空间,优化交通结构,美化城市环境,而且对市民的出行交通带来便利.然而,在城市隧道建设过程中势必会对隧道地表的土层造成一定的扰动,使土基发生变形.建筑物直接与地表土层相连,所以,施工过程会对土层产生扰动引起土基变形,会使地表建筑物产生不均匀沉降,沉陷,倾斜,开裂等危害[1-3],对人们的日常生活带来很大影响,故在进行爆破开挖施工时,严格......
, YAN Shuming, MA Liang, et al. Full-scale impact test of a combined barrier for vehicle speed-reducing[J]. Journal of Vibration and Shock, 2013, 32(13): 1-5, 12. [13] PIERSON M. Behavior of laterally...; 文献标志码:A 文章编号:1672-7207(2017)08-2169-11 Impact resistance of road barrier of micropile-MSE wall for subgrade ZHANG Zhichao1, 2, CHEN Yumin1......
by crack initiation and crack extension was analyzed using a digital impact test machine. It was found that rare earth elements increased the tensile strength of the steel by inducing crystallization... roll was studied. Test materials with different RE additions were prepared on a horizontal centrifugal casting machine. The solidification process, eutectic structure transformation, carbide......
and nonuniform microstructure. For this reason, based on the orthogonal test, the semisolid diecasting process of a certain type of four-way valve was simulated with FLOW-3D. The simulation results show... and availability of applying this technology are well verified by the numerical simulation. Key words: simulation; semisolid diecasting; four-way valve; orthogonal test 1 Introduction The four-way valve......
induced by debris impact. ZHAO et al [24] tested briquettes and raw coal with a customized drop-hammer test device in conjunction with ultrasonic imaging equipment and found that the fractal dimension... the beginning of the impact load, the internal stress distribution of the sample changes from diffuse to striped. The maximum strain value increases to 0.0114 at this moment. As the compression test......
Effect of Rare Earths-Treated Glass Fiber on Impact Wear-Resistance of Metal-Plastic Multilayer Composites 程先华1,谢超英2,薛玉君1 (1.School of Materials Engineering, Shanghai Jiao Tong University;2.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China) Abstract:The friction and wear properties under impact load and dry friction conditions of metal-plastic......
