共搜索到5130条信息，每页显示10条信息，共513页。用时：0小时0分0秒553毫秒
: 1255-1260. [4] MAYER H, PAPAKYRIACOU M, ZETTL B. Influence of porosity on the fatigue limit of die cast magnesium and aluminium alloys [J]. Int J Fatigue, 2003, 25: 245-256. [5] HORSTEMEYER M F, YANG N... Fatigue behavior of magnesium alloy and application in auto steering wheel frame MAO Ping-li(毛萍莉), LIU Zheng(刘 正), WANG Chang-yi(王长义), GUO Quan-ying(郭全英), SUN Jin(孙 晶), WANG Feng(王 峰), LIN Li......
range to fatigue life(SN)-diagrams. The real area of interest to structures was the long life regime(Nf>106 cycles), but aluminium alloys didnt generally show a fatigue limit asymptote so the fatigue...Comparative study on fatigue properties of friction stir and MIG-pulse welded joints in 5083 Al-Mg alloy ZHOU Cai-zhi(周才智)1, YANG Xin-qi(杨新岐)1, LUAN Guo-hong(栾国红)2 (1. School of Materials Science......
of the sample is about -350 MPa, which can reduce stress corrosion cracking in aluminum alloy and improve fatigue life. 2) It is shown that LSP makes fatigue limit increase due to the compressive... compressive stresses much deeper into the surfaces of metals or alloys. A brief parametric study of the effect of laser parameters on fatigue behavior and residual stress state generated in 6061-T651 alloy......
the effectiveness of solving. The total flowchart is shown in Fig. 2. 4 Fatigue analysis of cumulative damage model The cumulative damage model based on Miner criterion can be used to express the fatigue limit... on the AASHTO or the constant amplitude fatigue limit at 5 million cycles in the Eurocode3; m1 and m2 are the slopes of the bilinear S-N curve with the stress amplitude S greater and smaller than [S......
scheme section in Table 1. Since fatigue testing is a very time-consuming and expensive process, an upper limit of the number of cycles i.e. 2×106 cycles, to be applied was selected. The test...J. Cent. South Univ. (2016) 23: 701-707 DOI: 10.1007/s11771-016-3115-z Experimental study and analysis on fatigue stiffness of RC beams strengthened with CFRP and steel plate LU Yi-yan(卢亦焱), HU Ling......
defects is near to the upper limit of the fatigue life data. The fatigue fracture surface of the samples with minor defects possesses the mixed characteristics of quasi-cleavage, lacerated ridge... to approach a stress asymptote at longer lives. This stress asymptote is called the fatigue limit. The nonferrous alloys do not exhibit an asymptote, and the curve of stress versus life continues to drop off......
trend of fatigue life and the conservative result of fatigue limit. Thus, the new analytical method can estimate the residual life of pre-corroded Al-Cu-Mg alloy, especially smooth specimens. Key words: pre-corroded aluminium alloy; corrosion pit; crack propagation; life prediction; fatigue limit 1 Introduction Aluminium alloys are widely used in military and aerospace industries owing......
J. Cent. South Univ. (2019) 26: 1856-1862 DOI: https://doi.org/10.1007/s11771-019-4139-y A new slope optimization design based on limit curve method FANG Hong-wei(方宏伟)1,2, CHEN Yohchia(陈幼佳)3,4... Abstract: A new method is proposed for slope optimization design based on the limit curve method, where the slope is in the limit equilibrium state when the limit slope curve determined by the slip-line......
spheroidization of primary α-phase. The maximum tensile strength (1565 MPa) and fatigue limit (750 MPa) were obtained for the samples aged at 500 °C for 0.5 h, while the minimum ones of 1515 MPa...-particles existing at the β-grain boundaries. Key words: beta Ti alloy; Ti-6.6Mo-4.5Fe-1.5Al alloy; fatigue crack; ageing; secondary α; primary α; β-grain; tensile strength; fatigue limit 1 Introduction......
the initiation site and the failure mechanism. Evolution of the microstructure was investigated by TEM observation. The results show that fatigue limit of DD6 alloy with 0.34%Hf is a little smaller... in Fig.1. The arrows indicate that the specimens are not failure during fatigue tests. Fatigue strength at the 107th cycle is usually defined as the fatigue limit. As can be seen from Fig.1, S-N curves show......
