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Effectiveness Varying in Dimension of Crack-Stopping Holes
Author(s): 
Pages: 29-31
Year: Issue:  3
Journal: JOURNAL OF CIVIL AVIATION UNIVERSITY OF CHINA

Keyword:  应力集中有限元素法局部应力应变法疲劳寿命;
Abstract: 当航空器结构在航线使用过程中出现疲劳裂纹损伤时,通常在裂纹尖端打止裂孔进行临时性修理.通过理论分析和计算及试验分析,研究了止裂孔尺寸对止裂效果的影响.结果表明,当航空器结构出现疲劳裂纹损伤时,采用5.57~7.14 mm直径的止裂孔进行止裂修理,止裂效果较好;当止裂孔直径为6.35 mm时,止裂效果最好.
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