Various mechanical tests of carbon fiber monofilament

Abstract

In recent years, in order to accurately predict the material mechanical properties of carbon fiber-reinforced plastic by computer-aided engineering, it has become important to understand the material mechanical properties of carbon fiber as a reinforcement material. Since carbon fiber is a material whose properties are highly anisotropic, information on tensile properties only in the axial direction of the fiber is not sufficient for prediction, and tests to obtain properties in various directions are desired. This paper discusses the anisotropy of carbon fibers by presenting the results of our previous tests on carbon fiber monofilaments, including observation of changes in fiber diameter, dynamic and static torsion tests, torsion-tension test, transverse crush test, axial compression test and three-point bending test, and finite element method analysis using elastic moduli obtained from these tests.