Analysis of Tensile Tests on High-Performance Fiber Fabrics

There are differences in the mechanical properties of high-performance fiber fabrics under dynamic tension and quasi-static conditions. In this paper, four high-performance fiber fabrics were selected for testing at tensile rates of 1 m/s, 5 m/s, 12 m/s, and 20 m/s, and the test results were compared. The experimental results show that as the stretching rate increases, the breaking strength of nylon, aramid, and polyethylene fabrics shows an upward trend, while the strain shows a downward trend. However, the changes in the parameters of fracture strength and strain are not linearly related to the experimental variable of tensile rate. The strain fracture strength curve indicates that, unlike the smoother curve under quasi-static tensile conditions, the tensile curve during dynamic stretching exhibits a clear unloading process, and the peak of unloading also increases with the increase of stretching rate.