对直裂纹、圆弧裂纹和边裂纹进行了计算。

The numerical tests are taken for problems of internal straight cracks, circular arc cracks, and edge cracks.

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如何早期发现在役支柱绝缘子及瓷套中存在的危及安全运行的裂纹，一直是升压站和变电站检修的难题。

How to discover the dangerous slight crack in early stage in labor pillar insulator and porcelain cover, is a problem of the overhaul in step-up station and substation.

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本文通过对交叉杆扣板直焊缝、端头环焊缝等各部位裂纹的分析，找出了其断裂机理及与疲劳寿命的相关因素。

This article is to confirm the corresponding factors for crack causing and the fatigue life, through an analysis of cracks at fastening plate, welding seams at the end of frame brace.

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