Constitutive modeling for time- and temperature-dependent behavior of composites

08 Jan 2020 | Contributor(s): Orzuri Rique, Xin Liu, Wenbin Yu, Byron Pipes

Structural integrity, durability, and thermal stability represent critical areas for adequately modeling the behavior of composite materials. Polymeric matrices are prone to have time-dependent behavior very sensitive to changes in temperature that influence the effective properties of the...

Structure-property relationship for a prepreg platelet molded composite with engineered meso-morphology

17 Jul 2019 | Contributor(s): Sergey Kravchenko, Drew Sommer, Benjamin Denos, William Avery, Byron Pipes

The objective of this work was to develop a finite-element based computational model to investigate the complex three-dimensional load transfer from the known meso-structure of a prepreg platelet molded composite (PPMC) system with a layered planar morphology and...

Uniaxial strength of a composite array of overlaid and aligned prepreg platelets

17 Jul 2019 | Contributor(s): Sergey Kravchenko, Drew Sommer, Byron Pipes

The tensile strength of a discontinuous composite system consisting of aligned, unidirectional prepreg platelets is predicted by performing progressive damage analyses in a periodic representative volume element. Interlaminar and in-plane damage mechanisms are combined to...

Structure-property relationship for a prepreg platelet molded composite with engineered meso-morphology

17 Jul 2019 | Contributor(s): Sergey Kravchenko, Drew Sommer, Benjamin Denos, William Avery, Byron Pipes

The objective of this work was to develop a finite-element based computational model to investigate the complex three-dimensional load transfer from the known meso-structure of a prepreg platelet molded composite (PPMC) system with a layered planar morphology and...

Tensile Properties of a Stochastic Prepreg Platelet Molded Composite

17 Jul 2019 | Contributor(s): Sergey Kravchenko, Drew Sommer, Benjamin Denos, Tony Favaloro, Byron Pipes, William Avery, Clark Tow

The stochastic prepreg platelet molded composite (PPMC) occurs when the orientation and arrangement disorder of platelets are determined by the uncontrolled molding conditions. The understanding of composite structure-property relationship is essential for the engineering applications of PPMCs....

Generalized Free-Edge Stress Analysis Using Mechanics of Structure Genome

22 Aug 2016 | Publications | Contributor(s): Bo Peng, Johnathan Goodsell, Byron Pipes, Wenbin Yu

This work reveals the potential of mechanics of structure genome (MSG) for the free-edge stress analysis of composite laminates. First, the cross-sectional analysis specialized from MSG is formulated for solving a generalized free-edge problem of composite laminates. Then, MSG and the companion...

Micromechanics Simulation Challenge Level I Results

30 Jun 2015 | Publications | Contributor(s): Andrew J Ritchey, Hamsasew Sertse, Johnathan Goodsell, Wenbin Yu, Byron Pipes

The initial results of level I of micromechanics simulation challenge were documented in the attached paper which is also included in the proceedings of American Society of Composites 30th Annual Technical Meeting at Michigan State.  Results for various composites including fiber...