Abstract
High-performance thermoplastic (TP)-based composite materials are promising compared with conventional thermosetting (TS)-based composites, as they are characterized by many advantages (lower processing costs, recyclability, high degree of chemical and fire resistance, excellent impact resistance, and damage tolerance). Though the mechanical properties of most TP composite systems are usually lower than TS ones, especially under high-temperature conditions. Still, high-performance TPs proved to be eligible for applications in aerostructures because of their excellent thermal stability, enhanced fracture toughness, and ductility which are instrumental in controlling their mechanical behavior. The fatigue performances of TP composites have been studied over the past 30 years to understand why their high fracture toughness under monotonic conditions does not necessarily result in high fracture resistance under fatigue loading. This chapter is aimed at shedding light on the specific mechanisms ruling the high-temperature fatigue behavior of these materials in different service conditions.
Published Version
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