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Testing study of subcritical crack growth rate and fracture toughness in different rocks CAO Ping(曹 平), LI Jiang-teng(李江腾), YUAN Hai-ping(袁海平) School of Resources and Safety Engineering...; Abstract: Subcritical crack growth of double torsion specimens made of ore, lherzolite, marble and granite was studied using Instron1342 type electro hydraulic......
Test of subcritical crack growth and fracture toughness under water-rock interaction in three types of rocksHAO Rui-qing(郝瑞卿), LI Jiang-teng(李江腾), CAO Ping(曹平), LIU Bo(刘博), LIAO Jun(廖峻) (School of Resources and Safety Engineering, Central South University, Changsha 410083, China)Abstract:The subcritical crack growth and fracture toughness in peridotite, lherzolite and amphibolite were......
Mechanism study on subcritical crack growth of flabby and intricate ore rock YUAN Hai-ping(袁海平), CAO Ping(曹 平), XU Wan-zhong(许万忠) School of Resources and Safety Engineering, Central South...; Abstract: Double torsion specimens were applied to study the subcritical crack growth of flabby and intricate ore in Jinchuan Ⅲ Mine. The relation between......
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at mesoscale, which influence the crack behaviors and mechanical characteristics. Key words: rock heterogeneity; crack evolution; subcritical crack growth; fracture mechanism Cite this article as: WANG... that can be substantially below the fracture toughness KC, which is known as subcritical crack growth [28], and it has drawn substantial attentions [28-32]. Phenomenally, subcritical crack growth refers......
A NOVEL PARAMETER FOR EVALUATING THE FATIGUE CRACK GROWTH RATE IN CARBON STEELS H.Nisitani1,S.Q.Zhu2,N.KAWAGOISHI3,X.S.WANG2 (1.Faculty of Engineering,Kyushu Sangyuo University,Fukuoka,812,Japan... for evaluating the fatigue crack growth rate in carbonsteels.Fatigue crack propagation tests of an annealed 0.42% carbon steel were carriedout under different conditions to investigate the relationship between......
阶段即第三阶段. 图15 典型亚临界扩展速度与应力强度因子关系曲线 Fig. 15 Typical curve of relation between stress intensity factor and crack velocity for subcritical crack growth 3.1 岩石亚临界裂纹研究进展 目前,对于裂纹扩展速率的测量主要存... N. Crack growth under biaxial compression[J]. Eng Fract Mech, 2002, 69(18): 2187-2198. [65] DYSKIN A V, SAHOURYEH E, JEWELL R J. Influence of shape and locations of initial 3-D cracks on their growth......
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; 文章编号:1672-7207(2014)11-3949-08 Williams series calculation and numerical simulation for stress intensity factor of rock subcritical crack growth HAO Ruiqing, LI... the subcritical crack growth for marble and granite. And the stress intensity factor obtained by theory analysis, obtained by numerical simulation were compared with the stress intensity factor obtained......
crack growth rate v and stress intensity factor KI as well as the value of rock fracture toughness were obtained,and the factor K0 of rock subcritical propagation was determined. The compression-shear... Research, 2013, 28(1): 7-10. [4] Nara Y, Koike K, Yoneda T, et al. Relation between subcritical crack growth behavior and crack path in granite[J]. International Journal of Rock Mechanics and Mining Sciences......
