Title: Effects of Voids on Swelling in Glass Fiber Composites

Authors: Olivia G. Blank, David A. Miller

DOI: 10.33599/nasampe/c.24.0254

Abstract: "Defects can heavily impact an end products functionality in composites manufacturing. Defects like porosity are a concern when it comes to mechanical performance, but also influences how water diffuses within the composite. Applications for marine energy generation require composite components to undergo heavy loads induced by water, as well as be resistant to moisture degradation. This study aims to quantify how porosity defects affect swelling within a composite. In this study, two types of composite samples were analyzed. One type being highly porous, while the other one being, comparatively, defect free. Both sample types were manufactured using RIMR135™ epoxy resin that was infused under vacuum into a 24-ply unidirectional glass fabric layup. The samples were cut approximately to 15 cm x 3 cm x 1 cm. The initial mass of each coupon was recorded, and the dimensions were measured using a Keyence VL-500 CMM scanner. Once manufactured, the samples were left to soak in distilled water at 50 °C, with mass measurements recorded periodically until the 30-day mark was reached. The samples were then rescanned using the Keyence and the swelling displacements recorded were then used to calculate the swelling strains for each sample set. Through use of scans obtained from the CMM analysis, the differences in swelling between porous and non-porous composites was determined and will aid in quantifying the effect of porosity defects for manufactured components in marine applications."

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Conference: CAMX 2024 | San Diego CA

Publication Date: 2024/9/9

SKU: TP24-0000000254

Pages: 14

Price: $28.00