激光技术, 2013, 37 (3): 277, 网络出版: 2013-05-14
激光-EMAT法非接触式无损检测金属内部缺陷研究
Noncontact nondestructive detection of inner metal defects based on laser-EMAT technique
测量与计量 非接触式无损检测 激光-电磁超声技术 金属材料 measurement and metrology noncontact nondestructive detection laser-EMAT technique metallic materials
摘要
为了实现金属材料内部缺陷的非接触式无损检测, 采用激光-电磁超声方法进行了理论分析和实验验证研究, 取得了钢坯试样中深度为40mm、尺寸为φ3mm×30mm孔洞人工伤的检测数据, 检测结果与实际孔洞位置之间的测量误差约为5%。结果表明, 激光-电磁超声技术适用于金属材料内部缺陷的非接触式无损检测。
Abstract
Theoretical analysis and experiments about laser-EMAT(electromagnetic-acoustic transducer) technique were carried out for the purpose of noncontact and nondestructive detection of inner defects of metal parts. The test slab contains a φ3mm×30mm artificial hole about 40mm beneath the surface. The testing error was about 5%. The result shows that the laser-EMAT technique is suitable for noncontact and nondestructive detection of inner metal defects.
赵扬, 郭锐, 宋江峰, 马健, 刘帅, 孙继华, 贾中青. 激光-EMAT法非接触式无损检测金属内部缺陷研究[J]. 激光技术, 2013, 37(3): 277. ZHAO Yang, GUO Rui, SONG Jiang-feng, MA Jian, LIU Shuai, SUN Ji-hua, JIA Zhong-qing. Noncontact nondestructive detection of inner metal defects based on laser-EMAT technique[J]. Laser Technology, 2013, 37(3): 277.
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