The Charpy Impact Test as a Method for Evaluating Impact Resistance of Composite Materials.

摘要

A detailed analysis of the three point bend (Charpy Impact) test was conducted. A simple strength of materials approach to the prediction of specimen response was extended to include shear deformation, shear yielding and local loading tup deformation. Load-deflection, energy absorbed and failure modes were predicted for graphite-epoxy, and two types of boron-aluminum composites. Experiments were then conducted on these materials and the observations compared to the predictions. The analysis was unable to predict specimen response accurately, especially when significant shear deformation or yielding occurred.