Influence of kerosene flame on fire-behaviour and mechanical properties of hybrid Carbon Glass fibers reinforced PEEK composite laminates

This work examines the influence of kerosene flame exposure on residual mechanical behavior (tension and compression) hybrid quasi-isotropic composite laminates consisting carbon/glass fibers a PEEK thermoplastic matrix. The (116 kW/m2 1100 °C), composites structural integrity was examined as function time (5–10-15 min). changes in tensile compressive properties (axial stiffness strength) were compared with respect to virgin materials (experiencing no prior exposure). discussions fire- mechanically-induced damage mechanisms are supported by fractographic analysis specimens. It is therefore possible better understand how fire-induced damages within micro- meso-structures modify flame-exposed laminates. Regardless time, involves in-plane through-thickness temperature gradients, which ultimately create two well defined areas laminates: an extensively delaminated one (the close exposed surface) relatively preserved (close back surface). From present work, it conclude that tension severely affected (-50% −70% prolonged exposures (15 min) as-received When 5 min case, (ranging from 15 seems have little very effect moderate properties. barrier formed extensive thermally-induced delamination contributes preserve plies surface. loading taken up 0° non-delaminated specimens, resulting preserving compression.