Test Background
Dynamic impact shear strength refers to the maximum shear stress of the specimen during the dynamic impact shear failure process. The dynamic impact shear test of fiber-reinforced composite materials can determine the dynamic impact-shear performance of fiber-reinforced resin matrix composite materials.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various fiber composite materials and provides professional dynamic impact shear testing services for fiber reinforced composite materials.
Scope of tests
Fiber-reinforced composite materials are composite materials formed by reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber, etc., and matrix materials through winding, molding or pultrusion molding processes.
According to different reinforcing materials, common fiber reinforced composite materials are divided into glass fiber reinforced composite materials (GFRP), carbon fiber reinforced composite materials (CFRP) and aramid fiber reinforced composite materials (AFRP).
Test method
1. Based on the principle of segmented one-dimensional Hopkinson rod test, the striking rod hits the input rod at a certain speed, forming an incident elastic compression stress wave in the input rod and propagating forward, dynamically impact loading the sample between the input rod and the output tube, causing shear failure of the sample along the thickness direction.
2. The elastic incident wave and reflected wave are measured by the strain gauge on the input rod, and the elastic transmitted wave is measured by the strain gauge on the output tube. According to the one-dimensional stress wave theory, the dynamic impact shear stress and dynamic impact shear displacement of the sample are calculated.
Test standard:
GB/T 32377-2015 Test method for dynamic impact shear performance of fiber reinforced composite materials
GB/T 1446 General principles for performance test methods of fiber reinforced plastics
