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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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用控制柔度法测定低循环疲劳裂纹扩展速率
, PP. 18-21
Abstract:
在航空发动机上不少部件的失效是由于低循环疲劳引起的。疲劳裂纹是在构件处于大范围屈服乃至整体屈服的情况下萌生和扩展的。一般说来,发动机部件的总寿命由两部分组成工程裂纹的形成寿命和扩展寿命。在低周疲劳中,前者占总寿命的80%以上,一旦宏观裂纹出现,由于高的应力集中,使构件经历相当少的循环就破断。
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