This is confirmed by SEM that it is caused by corrosion fatigue.

经扫描电镜断口分析确认,是腐蚀疲劳所致.

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Some directional points are made in corrosion fatigue reliability of a structure.

对结构腐蚀疲劳可靠性做了方向性提示.

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The results showed that the intermediate tie rod was fractured by corrosion fatigue.

结果表明,该中间拉杆的破断属腐蚀疲劳失效.

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So, the sucker rod's main failure modes are fatigue fracture and corrosion fatigue crack.

因此, 抽油杆的主要失效形式为疲劳断裂和腐蚀疲劳断裂.

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