Abstract
The interlaminar fatigue crack growth under mode I and mode II loading conditions in a temperature testing environment from -60 degrees C to +80 degrees C has been investigated. Materials used to perform the mechanical tests were fabric-reinforced composite systems with either semicrystalline or amorphous thermoplastic matrices. For reference purposes, traditional epoxy-matrix composites reinforced with the same type of fibers were used. As a general conclusion, it can be stated that the fracture process is a complex interaction of parameters such as the matrix and fiber type, the loading conditions, and the testing temperature environment.