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本文介绍用激光全息法配合声发射监测研究超高强度钢焊缝的延迟裂纹状态,结果表明:焊后焊缝的延迟裂纹的启裂和失稳扩展可以被监测到,并且开裂情况与全息再现相及声发射之间有着一定的关系。
In this paper, laser holography combined with acoustic emission monitoring was applied to study the delayed crack propagation in ultra-high strength steel. The results show that the initiation and destabilization of delayed cracks in the weld after welding can be monitored, and the cracking and holographic reproduction Phase and acoustic emission have a certain relationship.