The effect of hybridization on the GFRP behavior under high velocity impact

• Autor(es): R. J. Muhi ; F. Najim ; Marcelo Francisco de Sousa Ferreira de Moura
• Data: 2009
• Identificador Persistente: http://hdl.handle.net/10216/43438
• Origem: Repositório Aberto da Universidade do Porto
• Assunto(s): Ciências tecnológicas; Engenharia; Engenharia mecânica
• Tipo de Documento: Artigo
• Idioma: Português

Descrição

In thepresentstudy,experimentalandanalyticalinvestigationsforthebehaviorofE-glassfiberrein- forced compositehybridizedwithalayerofKevlar29fiber,underhighvelocityimpact,wereperformed. The experimentalworkincludestheplacementoftheKevlarlayeratfourdifferentlocationstoverifythe effectsofthestackingsequenceontheimpactbehavior.Threedifferentprojectilegeometries,namely, flat-ended, hemisphericalandconicalwereused.Theexperimentalresultsrevealthathybridization improves thelaminatesperformanceunderdynamicpenetration.Theresultsalsoindicatethatthelam- inates responsewasfoundtobehighlysensitivetotheprojectilegeometry.Inthecaseofanalyticalmod- eling, twoenergymodelswereconductedtocalculatetheprojectileresidualvelocities.Theresults obtained fromthetwomodelswerecomparedwiththoseobtainedexperimentallyandsomeconclusions were drawn.