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3 疲劳断口的显微形貌特征疲劳断口的显微形貌最突出的特征是疲劳辉纹条纹及轮胎压痕花样,它们常常做为疲劳断口的显微判据,即在未知断口上如果能够观察到这二种显微特征形貌之一就可以判断未知断口为疲劳断口。另外,疲
3 Fatigue fracture micro-topography Fatigue fracture micro-topography is the most prominent feature of fatigue striae stripes and tire indentation patterns, they are often used as fatigue fracture microscopic criteria that the unknown fracture if it can One of these two microscopic features is observed to determine the unknown fracture as fatigue fracture. In addition, fatigue