Determination of fracture energy (mode I) in the inverse fiber metal laminates using experimental–numerical approach

Abstract Fiber metal laminates (FML) are hybrid materials consisting of and composite layers. They have great mechanical fatigue properties. However, interface between layers can be critical for their final In this paper, process determination some fracture parameters in unusual FML material is described. Experimental tests following ASTM norm were conducted using Double Cantilever Beam (DCB). due to asymmetry, energy cannot obtained directly from the force–displacement curve. Finite element method simulations carried out cohesive elements surfaces approach. The behavior modelled traction separation law. Key properties law obtained—maximal energy. particular case approach was better reflecting experimental results. Determined values used later research tasks (like modelling big structures containing material) as presented successfully obtain cases which standard insufficient.