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arXiv · 1911.08665

Flexural Fatigue Life of Woven Carbon/Vinyl Ester Composites under Sea Water Saturation

Pavana Prabhakar·Ricardo Garcia·Muhammad Ali Imam·Vinay Damodaran
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Abstract

The adverse effects of sea water environment on the fatigue life of woven carbon fiber/vinyl ester composites are established at room temperature in view of long-term survivability of offshore structures. It is observed that the influence of sea water saturation on the fatigue life is more pronounced when the maximum cyclic displacement approaches maximum quasi-static deflection, that is, the reduction in the number of cycles to failure are comparable between dry and sea water saturated samples at lower strain ranges (~37% at 0.46% strain), but are drastically different at higher strain ranges (~90% at 0.62% strain). Key damage modes that manifest during the fatigue loading is also identified, and a non-linear model is established for predicting low cycle fatigue life of these composites in dry and sea water saturated conditions.

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Pavana Prabhakar, Ricardo Garcia, Muhammad Ali Imam, Vinay Damodaran. 2019-11-20. Flexural Fatigue Life of Woven Carbon/Vinyl Ester Composites under Sea Water Saturation. https://doi.org/10.1016/j.ijfatigue.2020.105641

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