FIB manufactured microstructures with low coefficients of thermal expansion

This study presents a novel method to describe the microscale phenomenon of cracks initiation based on sensitivity analysis in laminate fiber-reinforced composites. The failure composite laminates often roots fiber/matrix interfacial debonding. micro-cracking and debonding composites are difficult detect both experimentally numerically. paper shows that stress response transverse ply with respect individual interface cohesive properties follows normal distribution before initiate. sensitivities rapidly deviates from crack formation. Several realistic microstructural representations simulated validate proposed detecting initiation. prediction can be used as risk indicator increase reliability laminates’ designs.