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Fracture toughness and fatigue crack growth analysis of 7050-T7451 alloy thick plate with different thicknessesWANG Yi-lin(王艺淋)1, PAN Qing-lin(潘清林)1, 2, WEI Li-li(韦莉莉)1, LI Bo(李波)1, WANG Ying(王迎)1(1... University), Changsha 410083, China)Abstract:The strength, fracture toughness and fatigue crack growth resistance of 7050-T7451 aluminum alloy plate with different thicknesses (35 mm and 160 mm) were......
) 图11 裂纹遇到晶界扩展进入下一个晶粒时发生偏转和扭转的模型图[20] Fig. 11 Shematic illustration of deflection and twist of crack propagating into adjacent grain[20] 3 结论 1) 随着温度的升高,GH4742合金的裂纹扩展寿命降低,裂纹扩展速率增加.在低... dimensions for fatigue crack growth (FCG) test (Unit: mm) 实验分别在室温,700 ℃及750 ℃ 3个温度进行,为保证数据的可靠性,每个温度下测试3个样品.疲劳裂纹扩展实验在MTS810型疲劳机上完成,控制方法采用的是恒力幅测定材料的疲劳裂纹扩展速率da/dN,波形为正弦波,加载频率为10 Hz,应力比为0.1.本实验中采集的数据是裂纹扩展......
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Crack Initiation under Cyclic Compression冯美斌,陈新增,何家文摘 要:<正> The crack initiation behaviour under cycliccompression foy the notched specimen wasinvestigated. It has been found that the cyclesfor crack initiation increase with the increaseof compressive mean stress, and the decreaseof stress amplitude. The stress amplitude playsa more important role......
Effect of pre-strain on fatigue crack growth of 2E12 aluminum alloy YI Dan-qing(易丹青)1, 2, YANG Sheng(杨胜)1, 2, DENG Bin(邓斌)1, ZHOU Ming-zhe(周明哲)1 1. School of Materials Science and Engineering...> Abstract: The influences of pre-strain on the mechanical property and fatigue crack growth of 2E12 aluminum alloy were evaluated by SEM, TEM, mechanical property and fatigue tests......
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propagating toward tooth circumferential direction until fracture happens for the model used. Compared to position of initial crack, length and direction have less influence on crack propagation path...:1672-7207(2016)08-2668-08 Tooth root crack propagation regularity based on extended finite element method XU Detao, TANG Jinyuan, ZHOU Wei (Key Laboratory of Modern Complex Equipment Design......