Noncontact nondestructive detection of inner metal defects based on laser-EMAT technique

ZHAO Yang; GUO Rui; SONG Jiang-feng; MA Jian; LIU Shuai; SUN Ji-hua; JIA Zhong-qing

doi:10.7510/jgjs.issn.1001-3806.2013.03.001

LASER TECHNOLOGY > 2013 > 37(3): 277-280. > DOI: 10.7510/jgjs.issn.1001-3806.2013.03.001

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): 277-280. DOI: 10.7510/jgjs.issn.1001-3806.2013.03.001

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Noncontact nondestructive detection of inner metal defects based on laser-EMAT technique

1.
Institute of Laser Research, Shandong Academy of Sciences, Ji'nan 250014, China;
2.
Research Center of Nondestructive Testing Engineering of Shandong Province, Ji'nan 250014, China

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Received Date: July 30, 2012
Revised Date: August 30, 2012
Published Date: May 24, 2013

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Abstract

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 Ф3mm×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.
- measurement and metrology,
- noncontact nondestructive detection,
- laser-EMAT technique,
- metallic materials

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