Paper by Warren, Lopez-Anido, Vel, and Bayraktar Published in Composites Part B: Engineering

S13598368A paper titled, “Progressive failure analysis of three-dimensional woven carbon composites in single-bolt, double-shear bearing” has been published in the 2016 Composites Part B: Engineering, Volume 84. The paper was authored by Kyle C. Warren and Roberto A. Lopez-Anido of the UMaine Composites Center, Senthil S. Vel of the UMaine Department of Mechanical Engineering, and Harun H. Bayraktar of Albany Engineered Composites.

The paper has open access and can be viewed in full at:


Abstract A three-dimensional progressive damage model has been developed to capture the onset and initial propagation of damage within a three-dimensional woven composite in a single-bolt, double-shear joint. Reinforced with a three-dimensional woven ply to ply interlock IM7 carbon fiber preform impregnated with toughened epoxy resin and manufactured using a resin transfer molding process, the composite represents a unique material currently used in select aerospace structures. The modeled joint is commonly found in many aerospace structures and, when combined with the progressive damage response of this three-dimensional woven composite, the material response can be reliably predicted with a three-dimensional non-linear finite element model. This model is constructed using an orthotropic material assumption far from the bearing area and a voxelized mesoscale model with an as-molded geometry representing matrix and impregnated tow phases. The well-established Hashin failure criteria and the Matzenmiller–Lubliner–Taylor damage model were implemented with the unique morphology of three-dimensional woven composites. The onset of damage and trends seen in the model were found to be in agreement with previous experimental findings.


Kyle C. Warren, Roberto A. Lopez-Anido, Senthil S. Vel, Harun H. Bayraktar, Progressive failure analysis of three-dimensional woven carbon composites in single-bolt, double-shear bearing, Composites Part B: Engineering, Volume 84, January 2016, Pages 266-276, ISSN 1359-8368, (