Defect coupling: The last frontier in predicting the strength, life, and durability of fiber reinforced composite laminates
November 10-14, 2019
After more than 30 years of careful experimental investigation and exhaustive development of discrete damage analysis methods including integrated computational mechanics methods, our community knows a great deal about how discrete defects such as matrix cracks and defect growth (e.g. delamination) can be predicted. But many practical situations controlled by laminated multiaxial composite structures, the loss of performance and “sudden death” end of life is controlled by defect coupling which becomes a precursor to fracture plane development. Until recently, analysis methods to address such complex interaction and coupling of multiple defects and experimental methods of following the details of such interaction sequences as a foundation for understanding and model validation were not available. We believe that this barrier has been largely removed by recent work.
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Kenneth Reifsnider, MD Rassel Raihan, and Vamsee Vadlamudi, "Defect coupling: The last frontier in predicting the strength, life, and durability of fiber reinforced composite laminates" in "Composites at Lake Louise 2019", John Kieffer, University of Michigan, USA Erik Spoeke, Sandia National Laboratories, USA Meisha Shofner, Georgia Institution of Technology, USA Eds, ECI Symposium Series, (2019). https://dc.engconfintl.org/composites_all_2019/38