Process Induced Defects in Liquid Molding Processes of Composites

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dc.contributor.authorHamidi, Youssef
dc.date.accessioned2020-06-02T17:30:40Z
dc.date.available2020-06-02T17:30:40Z
dc.date.issued2017
dc.description.abstractLiquid Composite Molding (LCM) processes are cost efficient manufacturing alternatives to traditional autoclave technology for producing near-net shape structural composite parts. However, process induced defects often limit wider usage of LCM in structural applications. Thorough knowledge of these defects, as well as their formation mechanisms and prevention techniques, is essential in developing improved LCM processes. In this article, process induced defects in liquid molding processes of composites, categorized into preform, flow induced and cure induced defects, are reviewed. Preform defects are further presented as fiber misalignment and fiber undulation (waviness and wrinkling). The respective causes, detrimental effects, and possible prevention methods of these defects are presented. Thereafter, flow induced defects are classified as voids and dry spots. Dry spot formation mechanisms in LCM processes and available prevention techniques are summarized. In addition, void formation mechanisms, adverse effects on composite properties, and removal techniques are presented. Cure induced defects include microcracks, void growth and geometrical distortions (warpage and spring-in). Each of these defects are discussed along with their underlying causes as well as their control and reduction schemes.en_US
dc.identifier.citation[J1] Hamidi YK and Altan MC, Process Induced Defects in Liquid Molding Processes of Composites. International Polymer Processing, 32(5): 1-18, 2017. DOI:10.3139/217.3444en_US
dc.identifier.urihttps://hdl.handle.net/10657.1/2357
dc.language.isoen_USen_US
dc.publisherInternational Polymer Processingen_US
dc.titleProcess Induced Defects in Liquid Molding Processes of Compositesen_US
dc.typeArticleen_US

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Youssef Hamidi