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- The fracture and the surface of a hip joint fractured invivo has been studied by SEM.It is concluded that the fracture was due to corrosion fatigue cracking by bending stress. 利用SEM对实际使用时断裂的髋关节的断口和表面进行了分析,认为此关节的断裂为以弯曲应力为主的腐蚀疲劳断裂。
- Fractography analyses with scanning electron microscopy (SEM) were conducted to investigate the corrosion fatigue crack initiation mechanism. 此外,亦利用扫描式电子显微镜(SEM)观察破断面,以了解疲劳破坏机制。
- Ceneral calculation formulas of fatigue crack growth in article [1] were verified by the testing data of corrosion fatigue crack growth. 应用腐蚀疲劳裂纹试验数据验证了文献[1]中疲劳裂纹扩展尺寸的通用计算公式;
- The fatigue crack growth rate (FCGR) of 08PVXt, 16Mn, 440C and 4340 steels in distilled water anb NaClaqueous solution has been investigated, and the experimental results have been compared with those of corrosion fatigue in the literature. 本文对16Mn、08PVXt、440C和4340钢在蒸馏水和3.;5%25NaCl水溶液中的疲劳裂纹扩展速率(FCGR)进行了实验研究;并与一些钢在同类介质中的腐蚀疲劳(CF)实验结果进行了对比。
- Fractograph and microstructure analyses with scanning electron microscoy (SEM) and optical microscoy (OM) were conducted to determine the corrosion fatigue crack initiation and propagation mode. 此外,亦利用光学显微镜(OM)和扫描式电子显微镜(SEM),对金相组织与破断面加以观察分析,以瞭解裂缝的生成及成长模式。
- INITIATION MECHANISM OF CORROSION FATIGUE CRACK FOR STAINLESS STEEL IN CHLORIDE SOLUTION 氯化物溶液中不锈钢腐蚀疲劳裂纹初始萌生的过程机理
- corrosion fatigue cracking 腐蚀疲劳龟裂
- Instead, it was found that the corrosion fatigue and stress corrosion were the main reasons for the cracking of the tubesheet. 在腐蚀介质(水蒸气、氧、油浆中的硫)及拉应力的共同作用下,又使管板受到应力腐蚀。
- "Wedging effect" of corrosion byproducts was analyzed by using 3-D finite element method, and the site of possible fatigue crack initiation was identified. 利用三维有限元法分析腐蚀产物的“楔入效应”,得到最大主应力点的位置,是可能的起裂点。
- QUANTITATIVE ANALYSIS OF ANODE SOLUTION DURING CORROSIVE FATIGUE CRACK INITIATION 腐蚀疲劳裂纹形成过程中缺口根部阳极溶解的定量分析
- Long time corrosion fatigued the oil pipeline. 长时间的腐蚀使输油管道老化了。
- The flaking do increases and undulates the fatigue crack growth rate. 钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。
- The fractography of the fatigue crack initiation displayed cleavage f... 裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。
- The effect of pre immersion time on corrosion fatigue life reduced with the increasing of stress amplitude. 在 30MPa下预腐蚀对连接件的疲劳寿命的影响作用比 5 0MPa下预腐蚀对连接件疲劳寿命的作用要明显。
- To reduce the corrosion and stress can avoid or moderate the corrosion fatigue and prolong the lifetime of the bellows service. 通过降低腐蚀和波纹管应力可以防止或减轻腐蚀疲劳发生,延长波纹管使用寿命。
- No evidence of fatigue crack extension was detected in the silver Memorial Bridge nor the Fremont Bridge. 在西尔费纪念桥和弗里蒙特桥都没有检查出疲劳裂纹扩展的证据。
- It was put forward that research on galvanic corrosion and corrosion fatigue of magnesium are the next step of corrosion study. 同时,对大量的国内外有关资料进行研究,认为电偶腐蚀和腐蚀疲劳的特点及机理的研究将成为进一步研究镁合金腐蚀的重点。
- In service, fatigue cracking initiated at the plating runout led to lug fracture. 在实际使用中,在镀层的过渡段发生的疲劳裂纹会导致接耳断裂。
- N. Shlyannikov, Z.B. Kuang, F.P. Yang (2004), Surface fatigue crack growth behavior, Russian journal Power Engineering Problems. 杨凤鹏,林卓英(2004),表面裂纹疲劳扩展的试验,北京科技大学学报.
- The behaviours of fracture, fatigue and fatigue crack propagation in a cast magnesium alloy are systematically studied. 本文系统地研究了铸造镁合金的断裂;疲劳和疲劳裂纹扩展性能.