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Author:
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Year:
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Issue:
Description of Microstructurally Short Fatigue Cracks Growth
Author(s):
LU Wen-ge
Pages:
9
-
13
Year:
1999
Issue:
3
Journal:
JOURNAL OF GUANGDONG UNIVERSITY OF TECHNOLOGY
Keyword:
微观结构
;
疲劳短裂纹
;
位错模型
;
生长速率
;
Abstract:
通过对裂纹损伤区位错平衡条件的分析,建立了循环应力下的疲劳短裂纹生长位错模型.结合对疲劳短裂纹损伤区与晶界交互作用分析,由模型给出了一个振荡形式发展的微观结构疲劳短裂纹生长速率表达式,其范围包络线可以较好地覆盖裂纹生长速率的试验数据.
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