Challenges in Experimental Validation of Composite Damage Progression Models

Abstract

While attempting to benchmark composite progressive damage analysis tools, the Air Force Research Laboratory experienced challenges in obtaining some of the material properties needed for input to the models. Specifically, the standard tests conducted to obtain the transverse tension strength (ASTM 3039) and longitudinal compression strength (ASTM 3410) resulted in unacceptable failure modes. Alternate testing approaches were investigated which produced a consistent set of results and recommendations for future model calibrations.