Effects of hybridization and ply thickness on the strength and toughness of composite laminates

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Danzi, F (Author) Other; Tavares, RP (Author) Other; Xavier, J (Author) Other; Fanteria, D (Author) Other; Camanho, PP (Author) FEUP

Journal

Title: Journal of Composite Materials

Vol. 55 No. 22

Pages: 4601-4616

ISSN: 0021-9983

Publisher: SAGE

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00V-GD4

DOI: 10.1177/00219983211041762

Abstract (EN): This work presents the results of an experimental study performed in carbon/epoxy composite materials manufactured using a ply-level hybridization technique. The aim of the study is to investigate the potential of such hybridization technique to promote pseudo-ductile failure, and to enhance fracture toughness. Two thin-ply carbon-epoxy systems and three different carbon-carbon hybrid lay-ups are considered. Both strength and fracture tests are performed on the manufactured laminates and the properties of the hybrid materials are compared to those of the baseline non-hybrid composites. Digital Image Correlation and post-mortem X-ray imaging are used to analyze the fracture process of the different materials. The comparison of the mechanical response of the different materials demonstrates that, by means of thin ply hybridization, a pseudo-ductile failure in tension can be obtained, associated with fibre fragmentation. However, the hybridization seems not to be responsible for the increased fracture toughness that is ascribable to the ply-thickness effect.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16