Title: Study of Void Evolution in Epoxy Resin During Cure
Authors: Kaitlin Rigitano, Andy George, Dan Rapking, G.P Tandon and Thao Gibson
Abstract: It is well known that voids in composite materials lead to decreased structural performance. It is therefore necessary to understand their behavior in order to minimize the negative effects caused by the presence of these defects. In this work, an experiment was developed to study the evolution of voids in an epoxy material during cure. The experimental apparatus featured transparent glass tooling that allowed voids to be observed using an optical imaging setup under vacuum and elevated temperature conditions. Intentionally induced defects along with naturally evolving porosity were studied in both neat resin films and carbon fiber prepreg materials. Image analysis led to information on the evolution of void content, size, distribution, shape, and movement in an epoxy as a function of the cure cycle, and post-experiment optical microscopy provided insight into the morphology of defects that become trapped within composite materials during cure.
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Conference: SAMPE 2020 | Virtual Series
Publication Date: 2020/06/01
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