本文论述几种起重机钢结构焊缝裂纹产生的原因，提出焊缝裂纹的修复方法和起重机钢结构设计、制造中防止焊缝开裂的改进措施。
This article discusses causes of weld cracking in crane's steel structure, recommends ways of remedy and makes proposals concerning design and fabrication to avoid cracks.
研制了针对钢结构桥梁焊缝缺陷扩展的超声相控阵监测系统。
The ultrasonic phased array system for monitoring the expanding of weld defect in steel bridge was researched.
研究了基于应变模态的钢结构构件焊缝损伤的自动识别方法。
The strain mode based approach to identify weld damage in members of steel structure automatically is demonstrated in present paper.
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