Title: POST-FIRE RESIDUAL MECHANICAL PROPERTIES OF A COMPOSITE LAMINATE — EXPERIMENTAL STUDY
Abstract: E-glass /fire retardant Vinyl ester composite is one of the most commonly used facesheet/laminate in sandwich and composite structures. Evaluating its post-fire mechanical properties is critical to predict the residual strength of structural systems after compartment fires. This paper presents an experimental approach for assessing the residual capacity of environmentally exposed and fire damaged composite laminates. The approach involves capturing the post-fire response of a typical Biax-±45° E-glass/Vinyl ester laminate exposed to different heat fluxes (10, 20, and 30 kW/m2) using the cone calorimeter (ASTM E1354). A total of 96 samples were tested for shear, tension, and compression. Strength and stiffness reductions are proposed to safely predict the post-fire structural performance of these structural systems. Response and failure mechanisms were clarified using optical microscopy and thermomechanical analysis on the ambient and exposed laminates.
Authors: Elias A. Toubia, Alexander B. Morgan, and Abraham Elmushyakhi
Conference: CAMX 2017 –Orlando