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

• Author(s): R. J. Muhi ; F. Najim ; Marcelo Francisco de Sousa Ferreira de Moura
• Date: 2009
• Persistent ID: http://hdl.handle.net/10216/43438
• Origin: Repositório Aberto da Universidade do Porto
• Subject(s): Ciências tecnológicas; Engenharia; Engenharia mecânica
• Document Type: Article
• Language: Portuguese

Description

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.