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Nickel multilayers and their effects on bend fatigue strength of leadsLIU Feihua;WANG Zhanhua;SHEN Zhuoshen School of Material Science and Engineering, University of Science and Technology Beijing... pulse from sulfamate bath can im-prove the bend fatigue strength of leads. Such nickel plating has a multilayer structure, its morphology of sublayers can beclearly seen in its cross section with SEM......
strength improved by ICR treatment [J]. International Journal of Steel Structures, 2013, 13(1): 175-181. DOI: 10.1007/ s13296-013-1016-7. [10] FISHER J W, ROY S. Fatigue damage in steel bridges...] KINOSHITA K, BANNO Y, ONO Y, YAMADA S, HANDA M. Fatigue strength improvement and fatigue crack closure by portable pneumatic needle-peening treatment on welded joints [J]. International Journal......
is the plastic strain, s′f is the fatigue strength coefficient, b is the fatigue strength index, Nf is the fatigue life of cycle counting, e′f is the fatigue ductility coefficient, and c..., NAKANISHI T. Effects of surface roughness and abnormal surface layer on fatigue strength [J]. Applied Mechanics & Materials, 2011, 86: 867–870. (Edited by FANG Jing-hua) 中文导读 基于表面重构技术预测考虑三维表面形貌的工件的疲劳寿......
in the fatigue crack growth resistance for 7055 aluminum alloy. The correlations between the microstructure and strength or fracture toughness have been studied for this alloy. SRIVATSAN and SRIRAM[12...): 1079-1086. [6] ZHANG Gou-jun, LIU Gang, DING Xiang--dong, SUN Jun, TONG Zhen-feng, SHAO Yue-feng, CHEN Kang-hua. A fatigue model of high strength Al alloys containing second phase particles......
. Near the surface, yield strength and hardness are found to be increased by the laser shock. The ratio of fatigue crack initiation life for the laser-shocked to unshocked specimens is found to be 4.9... can significantly improve properties and control the development and growth of surface cracks[10]. Many of the proposed applications of LSP aim at increasing fatigue life and fatigue strength......
of fatigue test specimens(mm) Assessment of the fatigue behaviour of welded joints was obtained by applying statistical analysis to produce fatigue strength data as represented in the stress...=14.27-5.71lgΔσ(5) and the S-N curves of FSW are expressed as lgN=14.17-4.21 lgΔσ(6) The fatigue strength ranges and lives are compared in Table 3. From the comparison, it can be drawn that the fatigue life......
A practical model for efficient anti-fatigue design and selection of metallic materials: Ⅱ. Parameter analysis and fatigue strength improvementR.Liu,P.Zhang,Z.J.Zhang,B.Wang,Z.F.ZhangLaboratory...">In the first paper, a Y-T-F model was proposed based on the restrictions of both strength and plasticity;the corresponding applications on the fatigue strength prediction have also been discussed. In this second......
of the welded structure containing the fatigue crack mainly depended on the toughness of the low strength zone. Key words:fatigue crack growth; crack path deviation; electron beam weld-ing; inhomogeneity...ON FATIGUE CRACK PATH DEVIATION AT ELEVATED TEMPERATURE IN ELECTRON BEAM REPAIRED WELDMENTS OF TURBINE DISK L.H.Li1,Y.H.Zhang1,X.A.Zhang2,H.Y.Zhao3,H.Q.Zhang3 (1.School of Mechanical Engineering......
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