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(二)疲劳沟线的定量分析疲劳沟线是疲劳断口重要的特征参量,它是疲劳过载的分析依据之一,疲劳沟线一般垂直于疲劳裂纹瞬时前沿线,因此“顺着”疲劳沟线有时有助于找到疲劳源的位置。
(2) Quantitative analysis of fatigue groove line Fatigue groove line is an important characteristic parameter of fatigue fracture. It is one of the analysis basis of fatigue overload. The fatigue groove line is generally perpendicular to the instantaneous frontal line of fatigue crack, so “down” fatigue groove line Sometimes it helps find the source of the fatigue.