The Crack Growth Process of Particulate Filled Polymer Monitored by Acoustic Emission

In this paper, acoustic emission technology was used to monitor the crack initiation and propagation of single edge notched specimen of particulate filled polymer under three-point-bending condition. In the experiments, the initiation and propagation of crack tip were distinctly distinguished, and the damage modes of particulate filled polymer were efficiently identified. The experimental results studied that the initiation and propagation of crack tip can be divided into three periods. SEM results demonstrated that the main fracture mode of the material is the split between filler and matrix.