An Experimental Study of Dropped Ply Region in Composite
A micro mechanical study of Carbon/Epoxy composites with internally dropped plies has been made using micro-moiré interferometry. The experimental results show that there is a stress concentration region before the dropped ply. Micro cracks were initiated and propagated in this region. Two failure mechanisms in the dropped ply region were observed.
Soon-Bok Lee and Yun-Jae Kim
C. W. Zhao and Y. M. Xing, "An Experimental Study of Dropped Ply Region in Composite", Key Engineering Materials, Vols. 326-328, pp. 1769-1772, 2006