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A GENERAL CONSTITUTIVE RELATION FOR FATIGUE CRACK GROWTH ANALYSIS OF METAL STRUCTURES W.C.Cui1,X.P.Huang1 (1.School of Naval Architecture & Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China) Abstract:Crack growth rate curves are the fundamental material property for metal structures under fatigue loading. Although there are many crack growth rate curves available......
significance in engineering applications. Wrought magnesium alloys have higher mechanical properties, including tensile strength and elongation, as well as higher corrosion resistance and fatigue properties..., the crack forks form, which will inhibit crack propagation. This inhibition, in turn, results in the higher fatigue strength for the magnesium alloy base metal. The stress concentration and welding......
-concrete, the correlation between carbonation depth and compressive strength was analyzed and an equation between carbonation depth and compressive strength was put forward. Meanwhile, fatigue S-N curves of various carbonation depths were fitted, and the infl uence of carbonation on fatigue life and strength was studied. Carbonation has a dual effect on the fatigue behavior of GGBS-concrete......
Establishing empirical relationships to predict grain size and tensile strength of friction stir welded AA 6061-T6 aluminium alloy joints S. RAJAKUMAR, C. MURALIDHARAN, V. BALASUBRAMANIAN... alloy (Al-Mg-Si alloy) has gathered wide acceptance in the fabrication of light weight structures requiring a high specific strength and good corrosion resistance. Compared with the fusion welding......
are performed on MTS material testing system. The results indicate that the tensile strength, the maximum curving tensile stress, the curving stiffness modulus, and fatigue properties of asphalt...Fatigue Property of Basalt Fiber-Modified Asphalt Mixture under Complicated Environment郑元勋1,CAI Yingchun1,ZHANG Guanghai2,FANG Hongyuan11. College of Water Conservancy and Environment, Zhengzhou......
of 25 mm. The results show that the fatigue strength is anisotropic for the plate, it is 300 MPa along the transverse direction and 310 MPa along the longitudinal direction, respectively...试样品断口SEM像 Fig. 6 Fracture SEM images of fatigue strength test specimen in 7475-T7351 aluminum alloy plate 图7 疲劳断口裂纹源处不同区域的SEM像及对应的EDS谱 Fig. 7 SEM images and corresponding EDS......
Morphological evolution of γ′ phase in K465 superalloy during thermal fatigue Yang Jin-xia(杨金侠)1,2, Zheng Qi(郑 启)1, Sun Xiao-feng(孙晓峰)1, Guan Heng-rong(管恒荣)1, Hu Zhuang-qi(胡壮麒)1 1.Institute... Abstract: The alternative heating/cooling cycles(thermal fatigue)of K465 superalloy were carried out. The specimens were held at 1 050 ℃ for 300 s, then quenched into 20 ℃ recycling water for 10 s......
;is the fatigue strength coefficient; b is the fatigue strength exponent and E is the elastic modulus. Also, the plastic strain amplitude can be expressed in terms of the Coffin-Manson law: ... is the fatigue ductility exponent. In the evaluated fatigue parameters based on the Basquin equation, the fatigue strength coefficient () of 640 MPa and the fatigue strength exponent (b) of -0.18......
J. Cent. South Univ. (2017) 24: 2487-2495 DOI: https://doi.org/10.1007/s11771-017-3661-z Strength and failure characteristics of sandstone containing two circular holes filled with two types... containing two fabricated circular holes that were filled with gypsum and high-strength concrete respectively were prepared for studying the effects of ligament length L ligament incline angle α, as well......
