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of the specimens before and after epoxy coating treatment were discussed. The results indicate that the fatigue limit after epoxy coating treatment in gear oil is higher than that of the uncoated specimens... words: magnesium alloy; gear oil; epoxy coating; corrosion fatigue; fatigue limit; fatigue crack initiation 1 Introduction Magnesium alloys, which possess high specific strength, good stiffness......
is presented, for different degassing time. Moreover, simple prediction equations for the fatigue limit incorporating the effect of the shape and size of casting defects on the fatigue strength of material... of degassing time Regarding to Fig. 6, it can be seen that fatigue limit increased by about 30% after 1 min ultrasonic processing and 4% after 3 min processing. The experimental results......
slightly in very high cycle regime, but is not horizontal for R=0.5. Fatigue limit appears after 108 cycles for R=0.7. Surface roughness (the maximum roughness is no more than 3 μm) has no influence.... The staircase method was primarily used to determine the statistical properties of a fatigue limit. First, the fatigue limit had to be estimated and a fatigue life test was then conducted at this stress......
Determination and application of stress-based forming limit diagram in aluminum tube hydroforming ZHOU Lin (周林), XUE Ke-min (薛克敏), LI Ping (李萍) School of Materials Science and Engineering, Hefei...-spacerun: yes"> Abstract: The stress-based forming limit......
alloy[J]. Materials Review, 2005, 19(3): 47-50. [5] Mayer H. Influence of porosity on the fatigue limit of die cast magnesium and aluminum alloys[J]. International Journal of Fatigue, 2003, 25(5...萌生；裂纹扩展；疲劳辉纹 中图分类号:TG166.3；TG111.8 文献标志码:A 文章编号:1672-7207(2010)01-0132-06 Fatigue fracture......
(CSS-280S-20) and the dimension of the tested sample in fatigue test was d 9.4 mm×14.6 mm. The load was applied as a sinus wave function with a frequency of 10 Hz. To generate endurance limit-cycling..., this means that the fatigue strength of Ti35Nb foams is about 15.12 MPa. Fig.6 Endurance limit-cycling number curves of Ti35Nb metallic foams Figs.7(a) and (b) present the typical fatigue fracture surface......
J. Cent. South Univ. Technol. (2010) 17: 697-702 DOI: 10.1007/s11771-010-0542-0 Effect of age condition on fatigue properties of 2E12 aluminum alloy YAN Liang(闫亮)1, 2, DU Feng-shan(杜凤山)1...; Abstract: The fatigue behaviors of 2E12 aluminum alloy......
of structures was established by using qualitative analysis and data fitting method. Based on the limit state equation of fatigue, and considering the relationship between stress and interforce...; 文章编号:1672-7207(2017)11-3044-07 Effect of overrun and overloaded vehicles on fatigue damage and reliability of highway bridges ZHAO Shaojie 1, 2, 3, REN Weixin1, 4 (1. School......
SIMULATION OF COMPLEX THERMOMECHANICAL FATIGUE R.Bardenheier1,G.Rogers1 (1.Instron Ltd., Servohydraulic Business Team, High Wycombe, HP12 3SY, United Kingdom) Abstract:Two different types of experimental techniques to perform non-isothermal, unicxial and biaxial fatigue testa were described. A new miniaturised electrothermalmechanical test rig was presented and discussed. It enables testing......
