Progress in Failure: Toward Reliable Failure Predictions in Composites

Achieving reliable means for failure prediction in composites is a standing challenge. To this end, an integrated approach for the diagnosis and prognosis of composites is underscored. It encompasses three key elements. The first is nondestructive inspection enabling 3D measurement of defect size, location and geometry coupled with an automated transition capability to finite element models. The second is accurate and cost effective 3D material property measurements with a minimum number of tests and methods. Finally, achieving structural strength and fatigue life prognosis results from combining the prior elements into comprehensive methods that would ultimately allow for capturing the failure mechanisms associated with multiple damage modes and their interaction. Future research directions emphasize the development of composites processing simulation tools to accelerate the attainment of quality standards and associated dependable allowables.