Boundary element modeling for guided wave reflection and transmission factor analyses in defect classification
The guided wave scattering process by different defects in plate structures is studied with a boundary element method. The purpose is to separate sharp crack-like defects from smooth volumetric-like ones by analyzing the transmission and reflection factors. The traditional normal mode expansion tech...
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| creator | Rose, J.L. Wenhao Zhu Younho Cho |
| description | The guided wave scattering process by different defects in plate structures is studied with a boundary element method. The purpose is to separate sharp crack-like defects from smooth volumetric-like ones by analyzing the transmission and reflection factors. The traditional normal mode expansion technique has been combined with the boundary element discretization to form a hybrid BEM scheme. With this method, the scattered near-fields and the transmission and reflection coefficients of the far fields on individual modes can be obtained simultaneously. Several features related to the Lamb mode reflection and transmission process in a plate with these defect types are extracted and compared. The theoretical analysis provides a guideline for data acquisition and feature selection for use in the decision algorithm development program via neural nets. |
| doi_str_mv | 10.1109/ULTSYM.1998.762285 |
| format | Conference Proceeding |
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The purpose is to separate sharp crack-like defects from smooth volumetric-like ones by analyzing the transmission and reflection factors. The traditional normal mode expansion technique has been combined with the boundary element discretization to form a hybrid BEM scheme. With this method, the scattered near-fields and the transmission and reflection coefficients of the far fields on individual modes can be obtained simultaneously. Several features related to the Lamb mode reflection and transmission process in a plate with these defect types are extracted and compared. 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No. 98CH36102)</title><addtitle>ULTSYM</addtitle><description>The guided wave scattering process by different defects in plate structures is studied with a boundary element method. The purpose is to separate sharp crack-like defects from smooth volumetric-like ones by analyzing the transmission and reflection factors. The traditional normal mode expansion technique has been combined with the boundary element discretization to form a hybrid BEM scheme. With this method, the scattered near-fields and the transmission and reflection coefficients of the far fields on individual modes can be obtained simultaneously. Several features related to the Lamb mode reflection and transmission process in a plate with these defect types are extracted and compared. The theoretical analysis provides a guideline for data acquisition and feature selection for use in the decision algorithm development program via neural nets.</description><subject>Algorithm design and analysis</subject><subject>Boundary element methods</subject><subject>Data mining</subject><subject>Guidelines</subject><subject>Joining processes</subject><subject>Mechanical engineering</subject><subject>Nondestructive testing</subject><subject>Reflection</subject><subject>Scattering</subject><subject>Solid modeling</subject><issn>1051-0117</issn><isbn>9780780340954</isbn><isbn>0780340957</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1998</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotkM1qwzAQhAVtoWmaF8hJL-BUP5ZlHdvQP3Dpocmhp7CWVkHFlovltOTtq5DCwsDyzbA7hCw5W3HOzN222Xx8vq24MfVKV0LU6oIsjK5ZHlkyo8pLMuNM8YJxrq_JTUpfjAmmRDkj8WE4RAfjkWKHPcaJ9oPDLsQ99cNI94fg0NFf-EE6ou_QTmGIFKKj0wgx9SGl08KDnTIOEbpjwkRDpA59pqntICM-WDg5b8mVhy7h4l_nZPv0uFm_FM378-v6vikC12IqJOp8oNAAnoOvsGy5bG0rbF3lUIVSKce5rK2VNbNMoYGMtKLWFRqulJyT5Tk3IOLuewx9fnF3bkf-ATezXBs</recordid><startdate>1998</startdate><enddate>1998</enddate><creator>Rose, J.L.</creator><creator>Wenhao Zhu</creator><creator>Younho Cho</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>1998</creationdate><title>Boundary element modeling for guided wave reflection and transmission factor analyses in defect classification</title><author>Rose, J.L. ; Wenhao Zhu ; Younho Cho</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i172t-3e702027aaf1af6e4b13bcb2c86fec5e355d1138cc380c05e9a4b1b2876e91553</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Algorithm design and analysis</topic><topic>Boundary element methods</topic><topic>Data mining</topic><topic>Guidelines</topic><topic>Joining processes</topic><topic>Mechanical engineering</topic><topic>Nondestructive testing</topic><topic>Reflection</topic><topic>Scattering</topic><topic>Solid modeling</topic><toplevel>online_resources</toplevel><creatorcontrib>Rose, J.L.</creatorcontrib><creatorcontrib>Wenhao Zhu</creatorcontrib><creatorcontrib>Younho Cho</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Rose, J.L.</au><au>Wenhao Zhu</au><au>Younho Cho</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Boundary element modeling for guided wave reflection and transmission factor analyses in defect classification</atitle><btitle>1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102)</btitle><stitle>ULTSYM</stitle><date>1998</date><risdate>1998</risdate><volume>1</volume><spage>885</spage><epage>888 vol.1</epage><pages>885-888 vol.1</pages><issn>1051-0117</issn><isbn>9780780340954</isbn><isbn>0780340957</isbn><abstract>The guided wave scattering process by different defects in plate structures is studied with a boundary element method. The purpose is to separate sharp crack-like defects from smooth volumetric-like ones by analyzing the transmission and reflection factors. The traditional normal mode expansion technique has been combined with the boundary element discretization to form a hybrid BEM scheme. With this method, the scattered near-fields and the transmission and reflection coefficients of the far fields on individual modes can be obtained simultaneously. Several features related to the Lamb mode reflection and transmission process in a plate with these defect types are extracted and compared. The theoretical analysis provides a guideline for data acquisition and feature selection for use in the decision algorithm development program via neural nets.</abstract><pub>IEEE</pub><doi>10.1109/ULTSYM.1998.762285</doi></addata></record> |
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| ispartof | 1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102), 1998, Vol.1, p.885-888 vol.1 |
| issn | 1051-0117 |
| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Algorithm design and analysis Boundary element methods Data mining Guidelines Joining processes Mechanical engineering Nondestructive testing Reflection Scattering Solid modeling |
| title | Boundary element modeling for guided wave reflection and transmission factor analyses in defect classification |
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