Various types of polymer matrix composites are being considered for use in high temperature applications such as for
supersonic aircraft and naval applications. An attempt to find Fracture toughness of hygrothermally aged delaminated E-Glass
epoxy matrix composites is done as fracture toughness is important material property to consider in any design applications.
Delamination is one of the major failure modes seen in the laminated polymeric matrix composite (PMC). Hydrophilic nature of
epoxy polymers can lead to both reversible and irreversible/permanent changes in epoxy upon moisture absorption. The present
work deals with the experimental investigation of hygrothermal aging of delaminated E-glass-fibre-reinforced polymer
composite and its effect on the fracture toughness due to the exposure to elevated temperatures and wet conditions which
resulted in decrease of maximum load required for fracture with increase of temperature thus fracture toughness (GI) decreased
with increase of temperature
