Failure strength of composite T-joints prepared using a new 1-thread stitching process

The interlaminar or through-thickness strength of composite materials is lower than their 2-D plane strengths, which can cause failure of the composite structure. Z-pinning and stitching are two typical methods to increase through-thickness material strength. Z-pinning is a technique that inserts reinforcing pins or fibers along the thickness direction of composite materials, which improves their z-directional properties. Stitching, on the other...