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University), Changsha 410083, China)Abstract:The strength, fracture toughness and fatigue crack growth resistance of 7050-T7451 aluminum alloy plate with different thicknesses (35 mm and 160 mm) were... fatigue crack growth resistance, by comparison to the thinner plate. The drop of strength is mainly attributed to grain coarsening in the thicker plate, and the increased degree of recrystallization......
to fatigue loads except considering the strength increasing under biaxial confinements. The fatigue lives of rocks increase with the increase of the intermediate principal stress under the same ratio of the fatigue load and their biaxial compressive strength. The acoustic emission (AE) and fragments studies showed that the sandstone has higher ability to resist the fatigue loads compared......
Effect of Pre-corrosion on Fatigue Life of High Strength Steel 38CrMoAl刘建华School of Materials Science and Engineering, Beihang University摘 要:The effect of pre-corrosion on fatigue behavior of high strength steel 38CrMoAl was investigated with a fatigue test method using the accelerated pre-corrosion specimen in the neutral salt spray environment......
is the stress amplitude; Sm is the stress average; and Sμ is the material ultimate strength. 3.2 Fatigue life evaluation On the basis of the above load spectrum, the fatigue life of the key components can... J. Cent. South Univ. (2018) 25: 1958-1965 DOI: https://doi.org/10.1007/s11771-018-3886-5 Fatigue life evaluation on key components of high-speed railway catenary system QI Guang-feng(戚广枫), XIAO......
to analyze the effect of different loading frequencies on the fatigue performance for asphalt mixture, the changing law of asphalt mixture strengths with loading speed was revealed by strength tests.... It was revealed that the strength of the asphalt mixture is affected by the loading speed greatly. It was also discovered that the fatigue equation based on the nominal stress ratio will change......
, 1996, 44: 25-33. [8] AVALLE M, BELINGARDI G, CAVATORTA M P, DOGLIONE R. Static and fatigue strength of a die-cast aluminum alloy under different feeding conditions[J]. J Materials: Design... Low-cyclic fatigue properties of electrolytic low-titanium A356 alloys LIU Zhong-xia(刘忠侠), SONG Mou-sheng(宋谋胜), WENG Yong-gang(翁永刚), WANG Ming-xing(王明星), SONG Tian-fu(宋天福), LIU Zhi-yong(刘志勇......
fog 3.3 Fatigue crack growth mechanics The yield strength after pre-strain is from 329 to 375 MPa. The higher yield strength of pre-strained materials has a smaller monotonic plastic zone size(rp)[5... Effect of pre-strain on fatigue crack growth of 2E12 aluminum alloy YI Dan-qing(易丹青)1, 2, YANG Sheng(杨胜)1, 2, DENG Bin(邓斌)1, ZHOU Ming-zhe(周明哲)1 1. School of Materials Science and Engineering......
A practical model for efficient anti-fatigue design and selection of metallic materials: Ⅰ. Model building and fatigue strength predictionR.Liu,P.Zhang,Z.J.Zhang,B.Wang,Z.F.ZhangLaboratory of Fatigue... applications have also been discussed. Specific results would be introduced in two serial papers, in which the first paper focuses on the model building and the applications on fatigue strength prediction......
in the fatigue strength although the yield stress may significantly increase (T6)[15]. It is known that the mechanical properties of die-casting alloy AM60 can be improved following a supersaturated solution... E is elastic modulus, which is about 45 GPa for the magnesium alloys; σ′f and ε′f are fatigue strength and ductility coefficients respectively whose values have been expressed in Figs.2 and 3......
. The cubic compressive strength and elastic modulus at 28 d age were 55.9 MPa and 32.5 GPa, respectively. 2.3 Experimental scheme According to the loading condition of fatigue test, the load bearing...; Fatigue properties of special kind of reinforced......
