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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......
: Aiming at the appearance of crack and deforming deficiency in the stamping process of the large curved surface automobile panels, the numerical simulations of hydromechanical deep drawing process were... and rigidity can be increased. The results show that the optimum chamber pressure loading path of exhaust’s hydromechanical deep drawing is as follows. At the initial stage, the chamber pressure......
Effect of stress ratio on fatigue crack growth of Ti40 alloy WU Huan(吴欢)1, 2, ZHAO Yong-qing(赵永庆)1, ZENG Wei-dong(曾卫东)2 1. Titanium Research Center, Northwest Institute for Non-ferrous Metal...; Abstract: The effect of stress ratio on fatigue crack growth (FCG) behavior of Ti40 alloy was analyzed. A unified approach, developed by VASUDEVAN and SADANANDA was used......
in the fatigue crack growth region and finial fracture region, while the fracture path through the weld in 3.5% NaCl solution shows some discriminative features both in the fatigue crack growth...Trans. Nonferrous Met. Soc. China 26(2016) 2830-2837 Effect of corrosive environment on fatigue property and crack propagation behavior of Al 2024 friction stir weld Lei WANG, Li HUI, Song ZHOU......
distribution in Fig. 5(b) shows that the prior path of crack expansion is along the sub-grain boundaries or grain boundaries, and larger deflections occur when the crack moves through a large angle grain... sub-grain boundaries without almost no deflection or along the sub-grain boundaries. The Schmid factor distribution in Fig. 5(c) shows that the fatigue crack almost selects the most favorable path......
J. Cent. South Univ. Technol. (2008) 15(s1): 453-456 DOI: 10.1007/s11771-008-398-8 Effect of holes on in-plane shear (Mode Ⅱ) crack sub-critical propagation of rock XIE Hai-feng(谢海峰), RAO Qiu...) test and newly designed electrically conductive adhesive method were used to measure shear crack sub-critical propagation time and rate of sandstone specimen. Different cubic specimens......
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... specimens, the double torsion experiments of marble, lherzolite and migmatite in Jinchuan No.3 Mine were conducted to study the law of rock subcritical crack propagation. In addition, the relationship among......
J. Cent. South Univ. Technol. (2008) 15(s1): 402-405 DOI: 10.1007/s11771-008-388-x In-plane shear (ModeⅡ) crack sub-critical propagation of rock at high temperature RAO Qiu-hua(饶秋华), XIE Hai-feng(谢海峰), XIE Qiang(谢 强) (School of Civil Engineering and Architecture, Central South University, Changsha 410083, China) Abstract: In-plane shear crack sub-critical propagation of rock at high......
INVESTIGATION OF THE LOW-CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIORS OF P91 BASE METAL AND WELD JOINTS M.M.Yu1,H.C.Yang1,Y.Tu1,J.Zhao2 (1.Dongfang Boiler (Group;2.Department of Materials Engineering, Dalian University of Technology, Dalian 116023, China) Abstract:Low cycle fatigue tests and crack growth propagations tests on P91 pipe base metal and its weld joints were conducted at three......
J. Cent. South Univ. Technol. (2010) 17: 1177-1184 DOI: 10.1007/s11771-010-0615-0 Crack tip higher order stress fields for functionally graded materials with generalized form of gradation YAN Xiu... gradation applicable to a more broad range of functionally graded materials (FGMs) was presented. With the material model, analytical expressions of crack tip higher order stress fields in a series form......