Guided waves in elastic plates with Gaussian section variation: experimental and numerical results.
Identifieur interne : 000F30 ( Main/Merge ); précédent : 000F29; suivant : 000F31Guided waves in elastic plates with Gaussian section variation: experimental and numerical results.
Auteurs : P. Marical [France] ; M Ech-Cherif El-Kettani ; M V PredoiSource :
- Ultrasonics [ 1874-9968 ] ; 2007.
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Abstract
Experimental and numerical results are presented on the behavior of guided waves in elastic plates in plane strain that include a Gaussian variation of their section, located between two areas of constant thickness. The area of varying section is wide compared to the used wavelengths, which allows wave propagation inside this area. The experimental results show that an incident Lamb wave is indeed converted into an adiabatic wave inside the varying section domain. A trapped wave in the Gaussian domain is also observed, depending on the incident mode and on the Gaussian maximum height. Outside the varying section domain, conversion into different Lamb waves is observed. This conversion phenomenon is experimentally quantified by the measurement of the Lamb wave normal displacement and of its carried energy. A numerical study, based on the Finite Elements Method is performed, and successfully compared to the experimental results.
DOI: 10.1016/j.ultras.2007.05.004
PubMed: 17659314
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Patrick.marical368@univ-lehavre.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Acoustique, Ultrasonore et d'Electronique (LAUE), UMR CNRS 6068, Université du Havre, Place Robert Schuman, BP 4006, 76610 Le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="El Kettani, M Ech Cherif" sort="El Kettani, M Ech Cherif" uniqKey="El Kettani M" first="M Ech-Cherif" last="El-Kettani">M Ech-Cherif El-Kettani</name></author><author><name sortKey="Predoi, M V" sort="Predoi, M V" uniqKey="Predoi M" first="M V" last="Predoi">M V Predoi</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2007">2007</date><idno type="RBID">pubmed:17659314</idno><idno type="pmid">17659314</idno><idno type="doi">10.1016/j.ultras.2007.05.004</idno><idno type="wicri:Area/PubMed/Corpus">000268</idno><idno type="wicri:Area/PubMed/Curation">000268</idno><idno type="wicri:Area/PubMed/Checkpoint">000268</idno><idno type="wicri:Area/Ncbi/Merge">000190</idno><idno type="wicri:Area/Ncbi/Curation">000190</idno><idno type="wicri:Area/Ncbi/Checkpoint">000190</idno><idno type="wicri:Area/Main/Merge">000F30</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Guided waves in elastic plates with Gaussian section variation: experimental and numerical results.</title><author><name sortKey="Marical, P" sort="Marical, P" uniqKey="Marical P" first="P" last="Marical">P. Marical</name><affiliation wicri:level="4"><nlm:affiliation>Laboratoire d'Acoustique, Ultrasonore et d'Electronique (LAUE), UMR CNRS 6068, Université du Havre, Place Robert Schuman, BP 4006, 76610 Le Havre, France. Patrick.marical368@univ-lehavre.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Acoustique, Ultrasonore et d'Electronique (LAUE), UMR CNRS 6068, Université du Havre, Place Robert Schuman, BP 4006, 76610 Le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="El Kettani, M Ech Cherif" sort="El Kettani, M Ech Cherif" uniqKey="El Kettani M" first="M Ech-Cherif" last="El-Kettani">M Ech-Cherif El-Kettani</name></author><author><name sortKey="Predoi, M V" sort="Predoi, M V" uniqKey="Predoi M" first="M V" last="Predoi">M V Predoi</name></author></analytic><series><title level="j">Ultrasonics</title><idno type="eISSN">1874-9968</idno><imprint><date when="2007" type="published">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Computer Simulation</term><term>Elasticity</term><term>Membranes, Artificial</term><term>Models, Statistical</term><term>Models, Theoretical</term><term>Normal Distribution</term><term>Radiation Dosage</term><term>Radiometry (methods)</term><term>Scattering, Radiation</term><term>Ultrasonics</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Membranes, Artificial</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Radiometry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Computer Simulation</term><term>Elasticity</term><term>Models, Statistical</term><term>Models, Theoretical</term><term>Normal Distribution</term><term>Radiation Dosage</term><term>Scattering, Radiation</term><term>Ultrasonics</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Experimental and numerical results are presented on the behavior of guided waves in elastic plates in plane strain that include a Gaussian variation of their section, located between two areas of constant thickness. The area of varying section is wide compared to the used wavelengths, which allows wave propagation inside this area. The experimental results show that an incident Lamb wave is indeed converted into an adiabatic wave inside the varying section domain. A trapped wave in the Gaussian domain is also observed, depending on the incident mode and on the Gaussian maximum height. Outside the varying section domain, conversion into different Lamb waves is observed. This conversion phenomenon is experimentally quantified by the measurement of the Lamb wave normal displacement and of its carried energy. A numerical study, based on the Finite Elements Method is performed, and successfully compared to the experimental results.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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