Delamination dynamics and vibrothermographic-thermoelastic evaluation of advanced composite materials

dc.contributor.authorTenek, Lazarus H.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:48:20Zen
dc.date.adate2009-10-31en
dc.date.available2014-03-14T21:48:20Zen
dc.date.issued1991en
dc.date.rdate2009-10-31en
dc.date.sdate2009-10-31en
dc.description.abstractDuring vibrothermographic experimental testing of damaged composite plates, frequency dependent heat generation phenomena were observed. Local hot spots were formed around imperfection areas especially delaminations. Heat generation was also found to relate to the crack size. In order to explain the above observed phenomena, the dynamic behavior of undamaged and damaged composite plates was studied over a broad frequency range. The analysis was carried out using the finite element method based on the concepts of the three dimensional theory of anisotropic elasticity. Delaminations were modeled, and the local crack resonance’ was justified. Two NDE methods namely, Vibrothermography and SPATE were used to verify the numerical predictions. Experiments performed for both undamaged and damaged specimens, and good correlation between theory and testing was achieved.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 97 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10312009-020116en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10312009-020116/en
dc.identifier.urihttp://hdl.handle.net/10919/45345en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1991.T474.pdfen
dc.relation.isformatofOCLC# 23808550en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1991.T474en
dc.subject.lcshComposite materials -- Researchen
dc.titleDelamination dynamics and vibrothermographic-thermoelastic evaluation of advanced composite materialsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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