Journal of Sandwich Structures & Materials · 2009 · 15 citations · 7 references
EngineeringCivil EngineeringMaterials EngineeringMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsFracture MechanicsFracture PropagationFracture ResistanceFracture ToughnessStrength Of MaterialsStress AnalysisCrack ArrestCrack GrowthCrack PropagationCrack Propagation AnalysisEnergy ReleaseEnergy Release RateFoam CoreSandwich Structures
ABSTRACT: A new crack arrester was proposed, in which a different material with higher stiffness is installed on the crack propagation path. The effect of this crack arrester was experimentally evaluated for interfacial crack propagation between a carbon fiber reinforced plastic surface skin and a foam core. The experimental results indicated that the crack arrester increased the critical load of the crack growth, and approximately five times larger apparent fracture toughness was obtained near the leading edge of the arrester by considering the energy release rate. It was also confirmed that the fabrication of the crack arrester had no detrimental effect on the intrinsic properties of the sandwich panel structures.
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