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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......
stress at both ends of the specimen. The first crack was oriented at 50° from the horizontal direction and kept constant throughout the analysis while the orientation of the second crack was changed... to study the effect of confining pressure on the crack propagation process, showing that the SIFs increase and the crack initiation angles change in this case.Key words:crack propagation; crack......
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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......
J. Cent. South Univ. (2020) 27: 2367-2381 DOI: https://doi.org/10.1007/s11771-020-4455-2 A generalized cover renewal strategy for multiple crack propagation in two-dimensional numerical manifold... poses a challenge for multiple crack propagation problems and there are few references. In this study, a robust and efficient strategy is proposed to update the cover system of the numerical manifold......
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......
J. Cent. South Univ. (2018) 25: 961-975 DOI: https://doi.org/10.1007/s11771-018-3797-5 Effect of annealing treatment on microstructure and fatigue crack growth behavior of Al–Zn–Mg–Sc–Zr alloy CHEN... (EBSD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), tensile and fatigue crack growth rate tests to explore the influence of annealing treatment on microstructure......
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......
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......