AIM Webinar: Porosity in Composite Materials – Part 2

Composite materials inherently contain defects, which introduce variability and often restrict their mechanical properties. Among these defects, porosity is one of the most prevalent and can negatively affect both the structural integrity and aesthetics of the material. The presence and extent of porosity are largely determined by processing parameters.

Previously, we presented a comprehensive list of common causes of porosity along with considerations for reducing or eliminating them (sources and sinks). In this webinar, we will continue to investigate the sources and sinks of porosity, particularly focusing on liquid composite molding and advanced manufacturing techniques such as prepreg and out-of-autoclave prepreg processing. We will delve into the formation of porosity within these processes and present case studies. Critical steps like debulking and degassing will be thoroughly discussed. Additionally, we will provide an overview of the methodologies for measuring and assessing the levels of porosity in a manufactured composite component.

Note: Recording of Part I of this topic can be found here: https://compositeskn.org/KPC/A336

Presenter:

Casey Keulen
University of British Columbia

This presentation is part of the ongoing CKN webinar series. Content discussed in the webinar is linked to the Knowledge in Practice Centre, allowing users to access this and other content in a consistent and coherent manner.

This webinar is co-hosted by Composites Knowledge Network (CKN) and SAMPE Canada