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dc.contributor.authorFurrow, Keith W.en_US
dc.date.accessioned2014-03-14T21:45:50Z
dc.date.available2014-03-14T21:45:50Z
dc.date.issued1993-05-05en_US
dc.identifier.otheretd-09122009-040516en_US
dc.identifier.urihttp://hdl.handle.net/10919/44770
dc.description.abstract

The effects of temperature and humidity cycling on mechanical properties of AS4/3501-6 quasi-isotropic composites prepared from unstitched, Kevlar 29 stitched, and S-2 glass stitched uniweave fabric were determined. Data presented include compression strengths and compression-compression fatigue results for environmentally cycled and uncycled composites. Ten1perature cycling ranged from 60°C to -55°C. The relative humidity varied between 95 percent at the high temperature and a percent at the low temperature. Microcracks which were found predominantly around individual stitches were recorded using photomicrographs taken at the end of each cycling period. The glass stitched and Kevlar stitched laminates showed significant microcracking before cycling. The unstitched uniweave material developed microcracks only after cycling. The glass stitched material had lower baseline compression strength than the unstitched and Kevlar stitched materials. Temperature and humidity cycling reduced the static compression strength of the unstitched and Kevlar stitched uniweave materials nearly 10 percent. Under the same conditions the glass stitched uniweave material lost 3 percent of its baseline strength. Combined temperature and humidity cycling did not effect the fatigue properties of the uniweave materials when the test specimens were dried to their original weights before testing.

en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1993.F877.pdfen_US
dc.subjectFibrous compositesen_US
dc.subject.lccLD5655.V855 1993.F877en_US
dc.titleEnvironmental effects on stitched RTM compositesen_US
dc.typeThesisen_US
dc.contributor.departmentEngineering Mechanicsen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEngineering Mechanicsen_US
dc.contributor.committeechairLoos, Alfred C.en_US
dc.contributor.committeememberHyer, Michael W.en_US
dc.contributor.committeememberDillard, David A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09122009-040516/en_US
dc.date.sdate2009-09-12en_US
dc.date.rdate2009-09-12
dc.date.adate2009-09-12en_US


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