Title: In-situ Measurement of Resin Shrinkage in Epoxy Composite

Authors: Samarth Motagi, Sandeep Chava, and Sirish Namilae

DOI: 10.33599/nasampe/s.19.1485

Abstract: Resin shrinkage due to the chemical changes and thermal gradients plays an important role in the residual stress evolution during composite manufacturing. In this paper, the resin shrinkage is measured in the neat resin and composite with the help of digital image correlation (DIC) in-situ during the curing cycle. The neat resin is cured inside a specially designed autoclave with viewports while the images are captured at regular intervals of time with the help of DIC to measure the displacements and strains during the curing cycle. An average compressive strain of 0.00896 is observed during the curing process. We also observed the effect of fibers on the shrinkage of the resin sample using carbon fiber, fiberglass, and crepe bandage as fillers. We noticed that as the stiffness of filler increased the strain in the matrix decreased.

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Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1485

Pages: 12

Price: FREE