Title: Characterization Of Diffusion In Epoxy Resin Using Atomic Force Microscopy Analysis

Authors: Olivia G. Blank, Lewis M. Cox, David A. Miller

DOI: 10.33599/nasampe/s.24.0173

Abstract: Composites are an essential part of manufacturing turbine blades for hydroelectric power systems. These blades undergo extreme loads and must be able to operate for at least 20 years. Composites offer several advantages over metals in these applications, including but not limited to material cost, manufacturing cost, and a high strength-to-weight ratio. This study investigated the impact of water saturation on the polymer matrix using atomic force microscopy (AFM). The samples studied were manufactured using MGS RIMR 035c resin and conditioned at 50 °C in distilled water until saturation was reached. Initial dimensions and mass of each sample were recorded, and moisture uptake was observed over 30 days. AFM analysis revealed that the elastic modulus of the neat resin decreased in areas affected by moisture diffusion, and as saturation was reached, the elastic modulus further decreased and became uniform throughout the sample thickness. The diffusion properties calculated in this study, as well as results from the AFM analysis, can be used to aid and validate computer modeling efforts of composite systems in marine environments.

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Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000173

Pages: 11

Price: $22.00