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Mechanism of fracture in macro- and micro-scales inhollow centre cracked disc specimenM. Eftekhari, A. Baghbanan, H. Hashemolhosseini, H. Amrollahi(Department of Mining Engineering, Isfahan University of Technology (IUT), Isfahan,Iran)Abstract:The hollow centre cracked disc (HCCD) specimen is one of the suggested alternative methods for determining the fracture toughness of rock. This work aims......
with dimensions of 25 mm×25 mm×2.5 mm and 70 mm×60 mm×20 mm are (480 °C, 30 min) and (480 °C, 90 min), respectively. The densities of GP zones and η′ phases of the small specimen are higher than those of the large specimen, which is consistent with the properties of the alloys. Key words: aluminum alloy; specimen size; solution treatment; heating rate; hardening precipitate 1 Introduction Al-Zn-Mg-Cu......
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from single track to block specimen BI Jiang(毕江)1, 2, CHEN Yan-bin(陈彦宾)2, CHEN Xi(陈曦)2,STAROSTENKOV M D3, DONG Guo-jiang(董国疆)1 1. Key Laboratory of Advanced Forging & Stamping Technology and Science... on the overlap ratio of single track, and further affects the internal forming quality of printed specimen. At a laser power of 160 W and scanning speed of 400 mm/s, the densification of block specimen......
Infl uence of Specimen Size on Compression Behavior of Cement Paste and Mortar under High Strain Rates陈徐东,CHEN Chen,QIAN Pingping,XU LingyuCollege of Civil and Transportation Engineering,Hohai...)to study the influence of specimen size on the compression behavior of cement-based materials under high strain rates.The static tests were applied using a universalservo-hydraulic system,and the dynamic......
章编号: 1672-7207(2005)02-0335-05 Numerical Calculation of Steel-Concrete Composite Beam Specimen in its Temperature Dropping and Rising Process CHEN Huan-xin,LIU Wei-wei,LIU Feng-zhen (School..., a numerical model was developed for calculating temperature distribution in temperature dropping and rising process of steel-concrete composite beam specimen. A three-dimensional unsteady thermal conduction......
J. Cent. South Univ. (2021) 28: 445-453 DOI: https://doi.org/10.1007/s11771-021-4614-0 Experimental investigation on fatigue of blade specimen subjected to resonance and effect of a damping hard..., the experimental results of the fatigue behavior of compressor blade specimen subjected to resonance and the effects of a damping hard coating on relieving the fatigue progress are presented. The crack......
珠光体基体灰铸铁内耗,共振频率及组织的关系研究汤虎1,彭金花1,杨弋涛1(1.上海市上海大学材料科学与工程学院)摘 要:采用自由衰减法在常温和变温下测试了不同条件下所得铸铁阶梯试样的内耗值,并对所测位置的石墨分布状态进行量化统计,进而研究铸铁内耗的影响因素.分析结果表明,石墨的面积及周长对铸铁内耗有着重要影响,且铸件的共振频率始终与内耗有着相反的变化规率;在升温测试条件下,铸铁内耗试样会在100℃左右出现内耗峰.关键词:灰铸铁; 内耗; 阶梯试样; 共振频率; 石墨......