Failure analysis and strengthening mechanism of Z-pinned composite T-joints under tensile loading

Z-pinning technology is applied to composite T-joints in this paper to explore the strengthening mechanisms. The structural properties of T-joints with skin thickness values at 2 and 4 mm were determined under stiffener tensile load. The results revealed that the initial failure strength and failure modes of T-joints were affected by the thickness of skin. Under stiffener tensile load, the actual stress situation of Z-pin tends to be complicated...