Damage sequence in thin-and ultra-thin-ply composite laminates under out-of-plane loading

A. Wagih, E. V. González, N. Blanco, P. Maimí, J. R. Sainz De Aja, F. M. De La Escalera

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


The study of the damage sequence in polymer-based composite laminates during an impact event is a difficult issue. The problem can be even more complex when the plies are thin. This paper investigates experimentally the damage in thin- and ultra-thin-ply laminates under out-of-plane loading for better understanding the damage sequence during impact test. TeXtreme® plain weave plies were used with two different thicknesses, 0.08 mm and 0.16 mm (referenced as ultra-thin-ply and thin-ply, respectively), and tested under different concentrated load levels. Load-displacement curves were analyzed and the extent of damage was inspected using optical microscopy and ultrasonic C-scan technique. The results showed that the damage onset occurs earlier in thin-ply laminates. The damage onset in thin-ply laminates is matrix cracking which induces delaminations, whereas for ultra-thin-ply laminates is due to delaminations which are induced by shear forces and small amount of matrix cracking. Moreover, the fiber breakage appears earlier in ultra-thin-ply laminates. The ultra-thin-ply laminates has smaller delamination area before the fiber breakage. However, after the fiber breakage starts, the delamination area for the ultra-thin-ply laminates is larger.
Original languageEnglish (US)
Title of host publicationECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9783000533877
StatePublished - Jan 1 2016
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21


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