Failure analysis of (±55°)3 filament wound composite pipes with an inclined surface crack under static internal pressure

Abstract This study conducts failure analysis of filament wound glass reinforced plastic (GRP) pipes made of E-glass/epoxy with an inclined surface crack under open-ended internal pressure. Test specimens are composed of six antisymmetric layers with (±55°) 3 winding angles. Tests have been performed at seven different crack angles: 0 ° , 15 ° , 30 ° , 60 ° , 45 ° , 75 ° , and 90 ° , with crack-to-thickness ratio of a / t = 0.50 . The burst strengths of the specimens were determined, and the dependence of the burst strength on the crack angle was examined.

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