金属焊接结构应用广泛,焊缝裂纹危害性极大。应用电磁激励红外热像技术检测焊缝表面裂纹,根据焊缝裂纹的热像图特征,提出了一种基于形态学的裂纹识别算法,将该方法运用于不同焊缝裂纹尺寸和方向,不同焊接结构试件的焊缝表面裂纹的检测试验中。实验结果表明,该方法能有效检测出焊缝表面裂纹的存在。 Wide range of metal welded structures, weld cracking great harm. According to the thermal image features of weld cracks, a new method of crack identification based on morphology is proposed. The method is applied to different weld crack size and direction, different welding Structural specimens of the weld surface crack test. Experimental results show that this method can effectively detect the existence of weld surface cracks.