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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......
Investigation in Crack Growth of A537 Steel and Its Weld Metal in Artificial Sea Water臧启山,刘慷,柯伟,朱自勇摘 要:<正> The crack growth rates of A537 c1.1... growth rate have been exa-mined.Some electrochemical reactions occurredduring tests and models for describing the cor-rosion fatigue crack growth process in lowstrength of offshore structural steel......
of undissolved ferrite can increase the contact fatigue life The contact fatigue life can be prolonged with increasing the amounts of undissolved ferrite The grain size can be fined by using subcritical... the fatigue life. The existence of undissolved ferrite can increase the crack initiation period. Under the experiment conditions, when the amount of undissolved ferrite is 10%, the longest contact......
Fatigue crack growth of titanium alloy joints by electron beam weldingHong-Yu Qi,Hao Shi,Shao-Lin Li,Xiao-Guang YangSchool of Jet Propulsion, Beijing University of Aeronautics and Astronautics摘 要:Electron beam welding(EBW) has been widely used in the manufacture of titanium alloy welded blisk for aircraft engines. Based on fatigue crack growth tests......
residual stress along the symmetry line in the interior of the sample. To simulate the growth of crack, the "model change" was used to gradually remove the elements from the left side of the sample... J. Cent. South Univ. (2020) 27: 3163-3174 DOI: https://doi.org/10.1007/s11771-020-4538-0 Measuring internal residual stress in Al-Cu alloy forgings by crack compliance method with optimized......
Fatigue Crack Growth of Al-Li Alloy 2091 in 3.5% NaCl Solution and at 130℃何世禹,王中光,李清建,张匀,冯晓曾摘 要:<正> A study has been made of the fatigue crackgrowth... growth resistance decreases withaging.The specimen with underaged structuresshows the highest resistance to fatigue crack growthdue to more deflected crack paths and the resultinghigh crack closure......
The effect of crack tip environment on crack growth behaviour of a low alloy steel at cathodic potentials in artificial seawaterYong Li1,Zhiyong Liu1,2,Endian Fan1,Zhongyu Cui3,Jinbin Zhao1,41... at crack tip and its effect on the crack growth behaviour of low alloy steel-E690 steel were studied at cathodic potentials in artificial seawater. The results showed that the micro environment......
. Probabilistic crack growth analyses using a boundary element model: Applications in linear elastic fracture and fatigue problems [J]. Engineering Analysis with Boundary Elements, 2012, 36: 944-959. [18...] OLIVEIRA H L, LEONEL E D. An alternative BEM formulation, based on dipoles of stresses and tangent operator technique, applied to cohesive crack growth modeling [J]. Engineering Analysis with Boundary......
Effect of Pre-loading on Short Fatigue Crack Growth at a Notch徐可为,何家文,周惠久摘 要:<正> Results indicate that under cyclic tension thegrowth rate of short... ratio.The variation of shortfatigue crack growth rate is related to the residualstress distribution around notch root.关键词:......
Effect of thermal aging on the fatigue crack growth behavior of cast duplex stainless steelsXu-ming Lü1,Shi-lei Li1,Hai-long Zhang1,Yan-li Wang1,Xi-tao Wang1,21. State Key Laboratory for Advanced...="ChDivSummary">The effect of thermal aging on the fatigue crack growth(FCG) behavior of Z3CN20?09M cast duplex stainless steel with low ferrite content was investigated in this study. The crack surfaces......
