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J. Cent. South Univ. (2017) 24: 2372-2381 DOI: https://doi.org/10.1007/s11771-017-3649-8 Crack stop holes in steel bridge decks: Drilling method and effects FU Zhong-qiu(傅中秋), JI Bo-hai(吉伯海), XIE...: Force analysis using a compact tension model, as recommended by ASTM, was carried out on a crack stop hole. The stress before, and after, drilling the hole was compared in terms of stress concentration......
Crack initiation ahead of piled-up of dislocations emitted from a mode Ⅱ blunt crackCaifu Qian, Wuyang Chu, and Lijie QiaoDepartment of Mechanical Engineering, Beijing University of Chemical... tests in a transmission electron microscope (TEM) show that dislocations emitted from a mode II crack tip will form a inverse piled-up group after equilibrium or a double piled-up group when they meet......
的疲劳裂纹扩展抗力. 关键词:SiCp/Al复合材料；疲劳短裂纹扩展；裂纹闭合；裂纹偏析 中图分类号:TG146.2+1 文献标识码: A Effect of SiC particulates on small fatigue crack growth behavior of SiCp/2009Al composite... and 2009Al thin layer above it, and hence inducing crack closure in composite during small fatigue crack growth. And the mound-like shape also causes crack deflection in composite, thus reduces......
Microscopic study of mode I crack tip deformationDeshun Fan, Caifu Qian, and Zhongjun JiangCollege of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China摘 要:<正>By simulating edge dislocation emissions from a mode I crack tip along multiple inclined slip planes, the plastic zone and dislocation......
Fatigue crack initiation for Al-Zn-Mg alloy welded jointLiang ZHANG 1), Xuesong LIU 1), Linsen WANG 2), Ping WANG 1) and Hongyuan FANG 1) (1) State Key Laboratory of Advanced Welding and Joining... fatigue crack initiation characteristics of Al-Zn-Mg alloy welded joint, notched specimens were used in fatigue test for the base metal, welding bead and heat affected zone (HAZ). The fatigue fracture......
Effect of three dimensional stress state on unstable fracture condition and crack opening level in a new crack growth modelFang WANG and Weicheng CUI China Ship Scientific Research Center,Wuxi 214082,China摘 要:A new model for the analysis of fatigue crack growth in the metal structures was proposed.This model shows a promising capability of explaining......
The Crack of Harden Cement Paste Observed with Multi-technique沈卫国摘 要:The shrinkage of the cement paste with low water-cement ratio at different relative humidity was observed and analyzed with ESEM and deformation map technique.The crack morphology was observed with different magnification with SEM and FESEM,and the formation of the crack was observed......
J. Cent. South Univ. (2020) 27: 242-255 DOI: https://doi.org/10.1007/s11771-020-4292-3 Finite element analysis of road structure containing top-down crack within asphalt concrete layer Pirmohammad... of Springer Nature 2020 Abstract: In this paper, a four-layered road structure containing a top-down crack is investigated by performing finite element analyses in ABAQUS. In this study, in addition......
J. Cent. South Univ. Technol. (2009) 16: 0444-0450 DOI: 10.1007/s11771-009-0075-6 Feasibility analysis for monitoring fatigue crack in hydraulic turbine blades using acoustic emission technique... in turbine blades using acoustic emission (AE) technique, the AE characteristics of fatigue crack growth were studied in the laboratory. And the characteristics were compared with those of background noise......
Acoustic Emission Monitoring the Fatigue Crack Growth in SM50B-Zc Steel朱祖铭,王中光,蓬钧摘 要:<正> The acoustic emission(AE)characteristicsfrom the fatigue crack propagation in SM50B-Zcsteel were strongly affected by the environment me-dium.The AE feature from the fatigue process bothin air and in 3.5% NaCl aqueous solution mani-fested a periodicity which......
