Experimental and numerical investigations on the failure behavior of metal skin and carbon fiber-reinforced polymer core structures considering layup and manufacturing process conditions

In this paper, the failure mechanism of metal skin (MS) and long carbon fibers reinforced core (CFRP) structures is investigated by means of tensile and bending tests, scanning electron microscope image analysis, and finite element simulations. For the failure modeling, a ductile damage model has been utilized for the MS, a traction separation model for the adhesive layers, whereas a modified Tsai-Hill criterion under the orthotropic assumption...