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材料工程  2001 

金属材料疲劳小裂纹扩展速率试验方法编制说明

Keywords: 小裂纹,扩展速率,物理小裂纹门槛值,试验方法

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Abstract:

概述了疲劳小裂纹试验方法航标的编制背景。论述了航标中几个主要技术问题,如,小裂纹试样和小裂纹监测方法的选择,三维应力强度因子K的确定,小裂纹数据有效性的判据及物理小裂纹门槛值。并且与ASTME67-95a方法中附录X3进行了比较。

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