Tensile failure of composite scarf repair

Bonded flush repairs for aerospace composite structures: A review on modelling strategies and application to repairs optimization, reliability and durability

“…Stress concentration factors were then used to predict failure with a first order analytical model. Critical failure volume (CFV) criterion [86] was used to address stress concentration in some studies on flush repairs [48,87]. It is a criterion of statistic nature, based on finding the sub-volume which has the highest probability of local failure.…”