Published 8/25/2014

SPE ACCE 2014 best paper winners announced

Two papers in the Virtual Prototyping & Testing of Composites session, and one in the Nanocomposites session, have been judged the best at this year's SPE Automotive Composites Conference and Exhibition, Sept. 9-11 in Novi, Mich., USA.

Three winners – two speaking in the Virtual Prototyping & Testing of Composites technical session and one in the Nanocomposites session – who received the highest average ratings by conference peer reviewers out of a field of 83 contenders will be honored for excellence in technical writing during opening ceremonies. Honorees Maxime Melchior, software development engineer at e-Xstream engineering, an MSC Co., took first place in this year's competition, while Sylvain Calmels, business development manager - automotive at e-Xstream engineering and Keith Honaker, graduate student at Michigan State University and a 2013-2014 SPE ACCE graduate scholarship award winner, were tied for second place.

The conference's best paper awards have been renamed in honor of long-time SPE ACCE committee member, session organizer, two-times technical program co-chair and long-time automotive composites industry researcher, Dr. Jackie Rehkopf, who died of cancer this summer.

Dr. Maxime A. Melchior was lead author (along with Marc Duflot, Jean-Sébastien Gerard, Laurent Adam, and Roger Assaker all from e-Xstream engineering) on a paper entitled, "End-to-End FE-based Homogenization of Woven Composites," which will be presented by e-Xstream colleague Dustin Souza. About his topic, Melchior explains that woven composites are represented by interlacing yarns impregnated by a resin matrix. Yarns are made of a resin matrix reinforced by continuous fibers. Homogenization of woven composites therefore requires two levels of homogenization: one for the yarn and another for the ply. Finite element (FE)-based homogenization at the ply level can be combined with mean-field homogenization at the yarn level to predict the mechanical behavior of a single ply. The main difficulty of this approach lies in the generation of a representative volume element (RVE) for a single ply. An end-to-end FE-based homogenization of woven composites has now been developed. A fully analytical framework based on mean-field homogenization also has been developed and this framework takes yarn curvature into account. The paper describes the newly developed tools, and the FE-based and mean-field homogenization predictions of linear properties are compared to experimental measurements on plain weave and 5HS woven composites.

Sylvain Calmels was co-author with Benoît Bidaine, also from e-Xstream engineering of a paper entitled, "Progressive Failure of CFRP Coupons and Automotive Parts," which will be presented by e-Xstream colleague Kurt Danielson. This paper addresses the application of a multi-scale material-modeling strategy to the specific needs of post-failure behavior simulation of continuous-fiber composite parts submitted to dynamic loads. The work demonstrates how simulation can be improved, for automotive safety design simulations in particular, helping to reduce design delays, cost, and weight of such structures.

Keith Honaker was lead author (along with Frédéric Vautard and Lawrence T. Drzal, also of the Composite Materials and Structures Center at Michigan State University as well as Lang Sui of the Hyundai-Kia America Technical Center Inc.) on a paper entitled, "Processing Methods of High Density Polyethylene-Exfoliated Graphene Nanoplatelet Nanocomposites for Automotive Fuel Tank Applications," which Honaker will present. About his topic, Honaker explains that the paper discusses high-density polyethylene (HDPE)–exfoliated graphene nanoplatelet composites, which were synthesized and tested to measure their mechanical and barrier properties.

For more information about SPE ACCE 2014, visit speautomotive.com/comp.htm.