Interlaminar deformations on the cylindrical surface of a hole in laminated composites: an experimental study

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dc.contributor.authorBoeman, Raymond G.en
dc.contributor.committeechairPost, Danielen
dc.contributor.committeememberSmith, Charles W.en
dc.contributor.committeememberReifsnider, Kenneth L.en
dc.contributor.committeememberReddy, Junuthula N.en
dc.contributor.committeememberPlaut, Raymond H.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:18:59Zen
dc.date.adate2005-09-16en
dc.date.available2014-03-14T21:18:59Zen
dc.date.issued1990-12-17en
dc.date.rdate2005-09-16en
dc.date.sdate2005-09-16en
dc.description.abstractFree-edge effects in composite laminates were studied experimentally. Strains were determined and compared on a ply-by-ply basis for the curved edges of a hole in thick composite panels and along the straight free-edge of the panels. The experimental technique of moire interferometry was extended to take measurements of in-plane deformations on singly-curved surfaces. A replication scheme was developed to produce high-frequency diffraction gratings on singly-curved surfaces. Two different techniques were developed to interrogate specimen gratings on 25.4 mm (1 in.) diameter holes. Eight thick composite laminates from three material systems were tested in uniaxial compression on a screw-driven testing machine. Interlaminar deformations were measured at the straight free-edge on four of the specimens. Strain distributions on the straight free-edge were compared with FEM results for two specimens. Good agreement was obtained for one specimen while poor agreement was obtained for the other.en
dc.description.degreePh. D.en
dc.format.extentxvi, 168 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09162005-115037en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09162005-115037/en
dc.identifier.urihttp://hdl.handle.net/10919/39380en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1990.B647.pdfen
dc.relation.isformatofOCLC# 23716305en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1990.B647en
dc.subject.lcshComposite materialsen
dc.subject.lcshLaminated materials -- Researchen
dc.titleInterlaminar deformations on the cylindrical surface of a hole in laminated composites: an experimental studyen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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