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Noncontact method applied to determine thickness of thin layer based on laser ultrasonic technique
Zhao, Y.; Ma, J.; Chen, J. W.; Ouyang, H.; Wang, M. H.; Zhao, P.; Zhang B(张博)
Department工业控制网络与系统研究室
Source PublicationMATERIALS RESEARCH INNOVATIONS
ISSN1432-8917
2014
Volume18Issue:S2Pages:1081-1085
Indexed BySCI ; EI
EI Accession number20150300420071
WOS IDWOS:000337146600205
Contribution Rank3
Funding OrganizationNational Natural Science Foundation of China [51205240]; Outstanding Young Scientists Program of Shandong [BS2011ZZ016]; Youth Science Funds of Shandong Academy of Sciences [2012-02]
KeywordNondestructive Testing Laser Ultrasonic Emat Thin Layer
AbstractThis paper describes a novel method to non-destructively determine the thickness of thin layer in a non-contact way. A model of wave interference was established based on the multireflection of shear wave in layered system. Furthermore, its expression of reflection coefficient phase was deduced to provide the principle of thickness measurement. A formed laser source by focusing a line on the layer surface was used to generate shear wave, while an electromagnetic acoustic testing (EMAT) sensor was proposed to receive the wave. An example of the method and experimental measurement for comparison is given for a thin steel sheet with the thickness of approximate 0.4 mm. The relative error between the present method and metallography method is less than 4%, which shows laser-EMAT technique is very suitable to non-destructive assess the thickness of the layer.
Language英语
WOS HeadingsScience & Technology ; Technology
WOS SubjectMaterials Science, Multidisciplinary
WOS KeywordTHERMAL BARRIER COATINGS ; VELOCITY ; DENSITY
WOS Research AreaMaterials Science
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/15086
Collection工业控制网络与系统研究室
Corresponding AuthorZhao, Y.
Affiliation1.NDT and e Laboratory, Laser Institute of Shandong Academy of Sciences, Jinan, China
2.Department 11, AVIC Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang, China
3.Key Laboratory of Industrial Informatics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
Recommended Citation
GB/T 7714
Zhao, Y.,Ma, J.,Chen, J. W.,et al. Noncontact method applied to determine thickness of thin layer based on laser ultrasonic technique[J]. MATERIALS RESEARCH INNOVATIONS,2014,18(S2):1081-1085.
APA Zhao, Y..,Ma, J..,Chen, J. W..,Ouyang, H..,Wang, M. H..,...&Zhang B.(2014).Noncontact method applied to determine thickness of thin layer based on laser ultrasonic technique.MATERIALS RESEARCH INNOVATIONS,18(S2),1081-1085.
MLA Zhao, Y.,et al."Noncontact method applied to determine thickness of thin layer based on laser ultrasonic technique".MATERIALS RESEARCH INNOVATIONS 18.S2(2014):1081-1085.
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