Abstract
Influence of strain rate on fracture toughness characteristics of an acrylic adhesive were investigated using DCB joints under Mode I loading-unloading condition. The DCB joints were fabricated by using an acrylic adhesive and adherends of steel. The unloading compliances measured were found to be much greater than the theoretical values. The elastic-plastic fracture toughness J values showed an approximately linear increasing tendency with increasing crack growth. Increasing of strain rate results in increasing of fracture toughness G_Ic and elastic-plastic fracture toughness J values.
