Abstract
High-temperature thermoplastic-matrix composites are currently considered to be used in highperformance structures such as supersonic aircraft and submersibles. The advanced structural applications require accurate analyses and clear understanding of the failure behavior of structural elements at elevated-temperatures. Among various structural failure problems presently concerned, elevated temperature stability of a thermoplastic-matrix composite panels under multiaxial loading is of significant interest not only because of its intrinsic complexities but also because of its technical importance. The objectives of the present study are to introduce a proper mathematical method to account for high-temperature constitutive properties of the composites and to investigate fundamental creep buckling behavior of thermoplastic-matrix composite panels under general multiaxial loading in an elevated-temperature environments.
