Compressive fatigue behavior of low‐velocity impacted thermoplastic composite laminate

In this paper, residual compressive strength and compression–compression fatigue tests of two kinds of AS4/PEEK laminates with low‐velocity impact damage were carried out to study the damage propagation characteristics. It was found that local buckling occurred around the impact dent and extended perpendicularly to the loading direction under fatigue compression loading. The expansion process of local buckling could be divided into three stages,...