3419 Investigation of fracture behavior in Short-beam-bend test of FRP

Abstract

This paper deals with fracture behavior on Short-beam-bend test of FRP. Mode II interlaminar fracture toughness and interlaminar shear strength are found to have no correlation, despite their in-plane shear stress. It included the examination of fracture behavior and dominant factors of Short-beam-bend test to find out the reason. On the fracture surface of interlaminar shear strength test, hackles and boundary separations and Mode I fracture have been found, whereas only the hackle has been found on the fracture surface of Mode II fracture toughness test. It seemed that Short-beam-bend test is not pure Interlaminar shear faracture test by complicate fractures.