Shear Test of Composite Material Conforming to JIS K7079 Method Band Visualization of Strain Distribution

User Benefits

- Enables shear testing of CFRP conforming to JIS K7079 Method B. - Visualization of the strain distribution is possible by using Real-Time Strain View.

Introduction

Carbon fiber reinforced plastic (CFRP) has high specific strength/specific stiffness in comparison with metals, and is used in transportation equipment to improve fuel economy by weight reduction. However, unlike conventional homogeneous materials, as a composite material, CFRP is anisotropic, and displays complex fracture behaviors involving tension, compression, bending, in-plane shear, out-of-plane shear, or those combinations, depending on the direction of the principal stress axis under load. In recent years, CAE analysis has been widely adopted in the industrial world because it can reduce the number of tests required, thereby reducing the cost of new product development. Since various property values are needed in order to enhance the accuracy of predictions of the performance of newly-designed products, there is strong demand for test methods that enable a pure evaluation of the respective fracture behaviors when conducting test evaluations of CFRP. In this experiment, a shear test of CFRP was carried out in accordance with JIS K7079 Method B, which is called the "two pairs of rails method" (or two-rail shear method). In addition, the strain distribution during the test was visualized by using Real-Time Strain View.

December 9, 2025 GMT