Experimental study of glass fiber reinforced polyester under repeated impacts

Abstract

The results of an experimental study on the repeated impact behavior of woven glass fiber reinforced polyesters are presented. Tests were carried out using a specially designed repeated impact testing machine, which utilizes a pneumatic system to apply the loads, and a data acquisition system to directly measure the number of impacts and deflections of the specimens. Calibration results of the device are reported and a comparison is carried out between experimental and analytical impact forces. Dynamic deflections and impact fatigue trend of composite specimens under repeated impacts are also discussed.