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Effects of precipitates on fatigue crack growth rate of AA 7055 aluminum alloy CHEN Jun-zhou(陈军洲) 1, ZHEN Liang(甄 良) 2, YANG Shou-jie(杨守杰)1, DAI Sheng-long(戴圣龙)1 1. Beijing Institute...: The effects of precipitates on the fatigue crack growth rate of AA 7055 Al alloy subjected to different ageing treatments were investigated using transmission electron microscope and fatigue crack......
(mass fraction, %) Table 2 Components of Keller’s reagent The fatigue tests were carried out by a high- frequency fatigue test machine with a capacity of 100kN load... set to 0.1. The oscillation frequency was in the interval of 110-120Hz in laboratory air. Shape and size of the fatigue test specimens of FSW and MIG are shown in Fig.1. Fig.1 Shape and size......
. An experimental investigation and theoretical analysis were made on the law of deflection development and stiffness degradation, as well as the influence of fatigue load ranges. Test results indicate that the law... loads applied. Constant amplitude fatigue test was carried out for the remaining four beams. Fatigue test setup is shown in Fig. 3. The fatigue test was conducted on a FTS multifunction servo-control......
with the available test data. The results suggest that the combination of a pit and IDS can be treated as the initial crack size. Pitting corrosion causes a significant decrease in fatigue lives with small... were the same as the measured test data [15]. Fig.4 displays experimental results and prediction of fatigue life based on AFGROW model. As can be seen from Fig.4, the model gives a good prediction......
of fatigue cracks in a wear resistant white cast iron after impact fatigue test were observed by means of optical microscope and SEM, and the relationship among the content of RE (rare earths) in the wear...Effect of RE Modification and Heat Treatment on Impact Fatigue Property of a Wear Resistant White Cast Iron 常立民1,刘建华2,王继东1,张瑞军2 (1.Analysis and Measure Center,Jilin Normal University,Siping......
; (19) As to the fatigue life with low stress amplitude loadings that Seq≤[S], CONNOR et al [20] analyzed the details with the fatigue test data... S-N curves. Fisher concluded that A can be assumed as logarithmic normal distribution with fatigue test data of 374 beams. In the AASHTO, the design value of A, AD has 95% survival probability......
; 文章编号:1672-7207(2014)08-2885-06 Device of aerodynamic load fatigue test for high-speed train body WANG Qianxuan1, 2, 3, LIANG Xifeng1, 2, 3, LIU Tanghong1, 2, 3, ZHANG Jie1, 2, 3 (1... was researched and used in fatigue strength experiment of new car bodies. The parameters related to car body alternating aerodynamic load fatigue test, such as loading method, loading time, pressure value......
℃. The tensile properties of the alloy were measured by MTS-810 test machine at a constant speed of 2 mm/min. The high-cycle fatigue experiments were preformed by PLG-100C at room temperature with a stress ratio... Tensile and high-cycle fatigue properties of spray formed Al10.8Zn2.9Mg1.9Cu alloys after two-stage aging treatment WANG Zi-xing(王资兴)1, 2, ZHANG Yong-an(张永安)1, ZHU Bao-hong(朱宝宏)1, LIU Hong-wei(刘......
Fatigue Performance of Bridge Deck Pavement Materials吴少鹏Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology摘 要:Three beam samples of bridge deck pavement were prepared, with gradation types of AC-13, and AC-16 and combined AC-13+AC-16. Four-point bending test was adopted to investigate......
and ductility of the sample. Fatigue crack growth tests were carried out on a MTS-810 test machine using middle-tension (MT) specimens according to ASTM E647 standard. Figure 1 shows the major... J. Cent. South Univ. (2018) 25: 961-975 DOI: https://doi.org/10.1007/s11771-018-3797-5 Effect of annealing treatment on microstructure and fatigue crack growth behavior of Al–Zn–Mg–Sc–Zr alloy CHEN......
