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Effect of intermediate principal stress on strength of soft rock under complex stress statesMA Zong-yuan(马宗源)1, LIAO Hong-jian(廖红建)2, DANG Fa-ning(党发宁)1(1. School of Civil Engineering... tests simulation, the effect of the intermediate principal stress on the strength of soft rock was investigated. Finally, an example of an axial compression test for a hard rock pillar with a soft......
Effect of Cerium on Seed Germination under Acid Rain Stress () [全文内容正在添加中] ......
Effect of CaO content on residual stress of CAS glass-ceramic XIE Jun, CHENG Jin-shu, LONG Xin-jiang, YANG Shu-zhen Key Laboratory of Silicate Materials Science and Engineering, Wuhan University... the residual stress in the system. Therefore X-ray diffraction (XRD) ‘sin2ψ’ method was used to calculate the residual stress in samples containing various contents of CaO. The relationship between......
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were loaded on the rock specimen, and then a horizontal stress was rapidly loaded while the stresses along the other two directions remained unchanged, or the vertical stress was increased while.... The specific testing procedures are described below: 1) Setting of initial ground stress condition. The specimen was loaded along the directions of three ground stresses at a loading rate of 0.5 MPa/s until......
Stress evolution and failure process of Brazilian disc under impactZHOU Zi-long(周子龙), ZOU Yang(邹洋), LI Xi-bing(李夕兵), JIANG Yi-hui(江益辉)(School of Resources and Safety Engineering, Central South University, Changsha, 410083, China)Abstract:To reveal stress distribution and crack propagation of Brazilian discs under impact loads, dynamic tests were conducted with SHPB (split Hopkinson pressure bar......
caused by the pre-loaded stress in path A (tensile stress is initially applied, followed by shear stress) is always greater than that caused by the post-loaded stress in path C (shear stress is initially..., from the perspective of deformation, the primary effect of stress path and the recency effect of strain path are dialectically unified. The pre-loaded stress or strain has a corresponding smaller......
STRESS RELAXATION AND RELIABILITY EVALUATION OF SODA-LIME GLASS Y.W.Bao1,F.T.Gong1,Y.F.Han1 (1.China Building Materials Academy, Beijing 100024, China) Abstract:Stress relaxation of glass is a dualism effect, it often lead to strength degradation in strengthened glass, but on the other hand, it improves the reliability and stressuniformity of glasses. In this work, stress relaxation of soda......
Corroding and Protecting of Surface Residual Stress With the Surface Hardening of Steel ZOU Qing-hua1 (1.Departmentof Electromechanical Engineering, Wuhan University of Science and Engineering, Wuhan 430073, P.R. China) 摘要:The states of the stress with the surface hardening are analyzed, the related experiential formula of the stress -temperature and stress-depth hardened curves are set up......
Stress corrosion cracking susceptibility of 7A52 aluminum alloy ZHAO Jun-jun(赵军军), WANG Wei-xin(王卫欣), CAI Zhi-hai(蔡志海), ZHANG Ping(张 平) Institute of Remanufacture Engineering, Academy of Armored Force Engineering, Beijing 100072, China Received 28 July 2006; accepted 15 September 2006 Abstract: The stress corrosion sensitivity of 7A52 aluminum alloy was investigated in the artificial......