Results 11 to 20 of about 1,293 (161)
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 more
wiley +1 more source
Dianci bileiqi, 2022 针对氧化锌非线性电阻片制造过程中隐性开裂的问题，采用金相显微镜等方法，对开裂断面的显微结构形貌、受力方式进行分析验证，探究了塑性开裂和脆性开裂两种隐性开裂的机理以及隐性开裂发生的时段。结果表明，氧化锌非线性电阻片发生隐性开裂的主要形式是在排结合剂之后发生的脆性开裂，这种开裂方式是在受力磕碰后，早期表现为非常隐蔽的微裂纹，后经高温烧结裂纹进一步扩展，最后受磨片剪切应力后开裂显现的一种失效模式。
张文刚 +5 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT TA18 alloy is an ideal material for piping systems in the aerospace field, the low notch sensitivity and high damage tolerance enhance its engineering application value. However, the complex failure mechanism influenced by strain gradient necessitates further improvement of the service stability for TA18 alloy in practical engineering ...
Xin Du +6 more
wiley +1 more source
Experimental and theoretical analyses of three-dimensional surface crack propagation [PDF]
, 2017 2011-2012 > Academic research: refereed > Publication in refereed journalVersion of ...
Han, ZC +4 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Tungsten is inherently brittle and particularly prone to thermal stress concentration and crack formation during additive manufacturing processes such as laser cladding, which severely limits its engineering applications as a coating material. To address this issue, this study proposes an in situ toughening strategy involving the introduction ...
Guo‐Xing Chen +12 more
wiley +1 more source
随机变幅载荷下海水腐蚀疲劳裂纹扩展速率的断裂力学参量选择 [PDF]
, 1994 ＃ 本文就随机变幅载荷下疲劳裂纹扩展速率的断裂力学参量的选择进行了分析;并与压机变幅载荷下焊接接头海水腐蚀疲劳裂纹扩展试验数据进行了比较;由此认为采用△K_(rms) ;作为断裂学控制参量是可取的;并且认为用常幅循环加载下的焊接接头海水腐蚀疲劳裂纹扩展速率曲线代替以△K_(rms)为参量的随机变幅加载下的裂纹扩展速率曲线;以此来估算其海水腐蚀疲劳裂纹扩展寿命;在工程应用上不仅方便可行 ...
徐纪林, 薛以年
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High-temperature fracture toughness of high Nb-containing TiAl alloys [PDF]
, 2016 The fracture toughness of a nearly lamellar Ti-45Al-8Nb-0.2W-0.2B-0.1Y alloy and a fully lamellar Ti-45Al-7Nb-0.2W-0.2Hf-0.3B-0.15 C alloy at 750℃ was investigated by prefabricating a fatigue crack in the compact tension(CT) specimen,and the ...
JIAO Ze-hui +4 more
core +1 more source
Experimental study on mechanical properties of filling-bulk ce-menting combination body [PDF]
, 2023 In order to study the influence of caved rocks in the goaf on the backfilling body in the backfilling mining, uniaxial compression test are carried out on the backfilling body-cemented granular body combination with different granular heights, discrete ...
Bingchao ZHAO +7 more
core +1 more source
Assessment of wind-induced fatigue crack initiation life at guyed mast earplate joints considering welding residual stresses [PDF]
, 2010 A new method for assessing the degree of the cumulative fatigue crack initiation damage of the welds of earplate joints of a guyed mast,which connect the mast with the cable,is proposed.Based on the multi-scale wind-induced stress analysis of the ...
Pi, Y, Qu, W, Wang, W
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Jianzhu Gangjiegou Jinzhan, 2019 通过对15个预制裂纹平板试件进行疲劳加载,研究了弯曲荷载作用下钢桥面板钻孔止裂的止裂机理、钢板疲劳性能与影响止裂效果的因素。分析了钻孔后孔边萌生裂纹的起裂点、扩展路径与测点应力变化,对比了不同止裂孔孔位及孔径对试件剩余疲劳寿命的影响。研究结果表明:在弯曲荷载作用下,打孔后的再次开裂点位于原裂纹尖端前方孔壁点,并沿原裂纹方向扩展,孔边裂纹在钢板上、下表面共同扩展;随着裂纹的扩展,裂纹尖端区域能承受的最大应力值逐渐降低;该试验结果表明:止裂孔孔位在0.5 D～1.0 D之间的止裂效果较好 ...
姚悦, 傅中秋, 王益逊, 吉伯海
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