Effects of the Anisotropic Elastic Modulus of a Boron-Fiber-Reinforced Aluminum-Matrix Composite on Specimens Calibrated for Crack-Length Determination.

摘要

In an investigation undertaken to assess the suitability of the fracture mechanics parameter K sub c for determining the fracture resistance of a boron-fiber-reinforced aluminum-matrix composite,calibration curves designed to measure crack length under load were prepared with specimens at various angles to the fiber axis of the sheet. The effect of the anisotropy of Young's modulus E is reflected in the curves obtained. Scatter in the data indicates that this is not a reliable method for determining crack length for this material, a boron-fiber/6061-aluminum composite. (Author)