LEADER 02961nam 2200409 450 001 9910795476303321 005 20230803211624.0 010 $a3-8325-9534-1 035 $a(CKB)4340000000244131 035 $a(MiAaPQ)EBC5231220 035 $a58a1c68d-7ce0-4116-9cd7-3edeb0dd2d03 035 $a(EXLCZ)994340000000244131 100 $a20180523d2014 uy 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aAnalysis of the mechanical response of impact loaded composite sandwich structures with focus foam core shear failure /$fTim Berend Block 210 1$aBerlin :$cLogos Verlag Berlin,$d[2014] 210 4$dİ2014 215 $a1 online resource (238 pages) 225 0 $aScience-Report aus dem Faserinstitut Bremen 300 $aPublicationDate: 20141220 311 $a3-8325-3853-4 330 $aLong description: Sandwich structures are an economically and structurally efficient way of designing large integral composite parts. In the aerospace industry pre-impregnated face sheets and honeycomb core structures can be considered as industry standard while e.g. naval structures and wind turbine blades typically use vacuum infusion technology with polymer foam cores. Application of the less costly infusion technology in the aeronautical industry requires a thorough understanding of the damage tolerance including low velocity impact as a frequent source of damaging events. At low impact energies damage in composite foam core sandwich structures is limited to core crushing and local face sheet delaminations. Higher impact energies may initiate the competing failure modes face sheet rupture and core shear failure depending on impact, geometric and material parameters. Face sheet rupture leads to severe local damage with typically good visibility, while core shear failure leads to cracks and rear face sheet debonding of the foam core with less visibility. This work investigates the low velocity impact response of sandwich structures with carbon fiber reinforced plastic (CFRP) face sheets and a polymeric foam core using experiments at room temperature and at -55 Grad Celsius. An analytically derived failure mode map is presented as a simple tool for design guidelines while the explicit finite element method is applied for a more detailed description of the sandwich impact process. Both models are used to analyze the impact response and describe relevant sensitivity parameters of sandwich structures. 606 $aMaterials$xTesting 615 0$aMaterials$xTesting. 676 $a620.110287 700 $aBlock$b Tim Berend$01540970 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910795476303321 996 $aAnalysis of the mechanical response of impact loaded composite sandwich structures with focus foam core shear failure$93792885 997 $aUNINA