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Q. Fatigue crack growth and fracture paths in sand cast B319 and A356 aluminum alloys [J]. Mater Sci Eng A, 2003, 314: 18-34. [4] WANG Q G, APELIAN D, LADOS D A. Fatigue behavior of A356/357 aluminum... of A356.2-T6 cast aluminum alloy [J]. Fatigue Fact Engng Mater Struct, 2000, 23: 417-423. [6] HAN S W, KUMAI S, SATO A. Fatigue crack growth behavior in semi-liquid die-cast Al-7%Si-0.4%Mg alloys......
growth rate with larger da/d N values through the equiaxed grain sample versus across the equiaxed-columnar grain sample at low K values(<13.8). The differences that are observed between the crack...Effects of microstructure on fatigue crack propagation behavior in a bi-modal TC11 titanium alloy fabricated via laser additive manufacturingYafei Wang1,2,Rui Chen1,2,Xu Cheng1,2,Yanyan Zhu1,2,Jikui......
, thus capturing the inherent scatter observed in fatigue. A crack growth analysis software AFGROW was used to extrapolate IDS from experimental results [17]. For a certain fatigue specimen... of fatigue cracks is best understood by beginning with the model for fatigue crack formation and growth in the noncorroded state. In the as-fabricated, noncorroded, or pristine state, fatigue cracks......
214082,China摘 要:A new model for the analysis of fatigue crack growth in the metal structures was proposed.This model shows a promising capability of explaining various fatigue phenomena.The new crack growth model is further completed by a continuous empirical formula for estimating the value of variable fracture toughness during crack propagation......
J. Cent. South Univ. (2020) 27: 2440-2454 DOI: https://doi.org/10.1007/s11771-020-4460-5 Effect of loading rates on crack propagating speed, fracture toughness and energy release rate using single... Meng, ZHANG Xian-shang. Effect of loading rates on crack propagating speed, fracture toughness and energy release rate using single cleavage trapezoidal open specimen under impact loads [J]. Journal......
examined by optical microscopy, transmission electron microscopy and scanning electron microscopy. The results show that the fatigue crack growth rate is proportional to the volume fraction of micro... at Pairs region. In a low fatigue crack growth rate region, alloy shows quasi-cleavage fracture features. In a middle fatigue crack growth rate region, the fatigue striation features are clear. Key words......
" name="ChDivSummary">In this study, a crack initiation and propagation behavior of Sn–5Sb lead-free solder under low-cycle fatigue is discussed. Cyclic push–pull loading tests with a single-hole specimen have been conducted at 313 K to investigate the crack initiation and propagation behavior of Sn-5Sb solder which has a higher melting point temperature than that of Sn–Ag–Cu solders. A fatigue life......
, the optimal frequency should be used. References [1] CHEN Jun-zhou, ZHEN Liang, YANG Shou-jie, DAI Sheng-long. Effects of recipitates on fatigue crack growth rate of AA 7055 aluminum alloy [J]. Transactions... method. They [16,17] also monitored the fatigue crack growth in riveted fuselage joints and a cracked metallic plate repaired with a bonded composite patch with the damage index method. Experiments......
of load frequency and ageing heat treatment on fatigue crack propagation rate of as-extruded AZ61 alloy [J]. International Journal of Fatigue, 2009, 31(3): 463-467. [19] ZENG R C, XU Y B, KE W, HAN E... of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60 [J].International Journal of Fatigue,2010, 32(2): 411-419. [24] ELIEZER A, MEDLINSKY O, HADDAD J, BEN H G......
theory, the crack propagation rate is expressed as [21] (1) where u is the fatigue crack..., DF3=0.9Fcos q2. Since 0°12<90°, DF1 is bigger than DF3, in addition, F4 is bigger than F2. Therefore, according to Eq. (1), it can be concluded that the fatigue crack propagation rate of Crack 1......
