Accelerated viscoelastic characterization of E-Glass/Epoxy composite
In this study, an accelerated viscoelastic characterization was applied to E-Glass/Epoxy materials. The approach is based on the TTSP (Time Temperature Superposition Principle) and the widely used lamination theory for composite materials. The final goal is the life prediction for fiberglass-reinforced plastic (FRP) piping systems used in oil industries. Creep tests at different temperatures were conducted with a servo-hydraulic test system to determine compliance master curves. The viscoelastic response of unidirectional specimens was modeled by a generalized Kelvin model. Direct iteration methods were developed to solve the differential equations. The viscoelastic response of E-Glass/Epoxy laminates at different temperatures to transverse normal and in-plane shear stresses is determined using 90{degree} and 10{degree} off-axis tensile specimens, respectively. Based on short-term creep tests, (2.5 hours), 40-year predictions were achieved. Creep-rupture tests at different temperatures were conducted. The rupture stresses were determined for 0{degree}, 90{degree}, 10{degree}, and ({plus minus}55{degrees})s specimens.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- OSTI ID:
- 5500115
- Country of Publication:
- United States
- Language:
- English
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