Measurement of resistance curves in the longitudinal failure of composites using digital image correlation

TLDR: In this paper, the authors presented a new methodology to measure the crack resistance curves associated with fiberdominated failure modes in polymer-matrix composites, which is based on the identification of the crack tip location using Digital Image Correlation and the calculation of the J-integral directly from the test data using a simple expression derived for cross-ply composite laminates.

About: This article is published in Composites Science and Technology.The article was published on 2010-11-15 and is currently open access. It has received 175 citations till now. The article focuses on the topics: Digital image correlation & Composite laminates.

Figures

Fig. 11. Load–displacement in a CT test specimen.

Fig. 14. Load–displacement in a CC test specimen.

Fig. 12. R-curves extracted from a CT specimen using FEM and DIC.

Fig. 13. R-curves extracted from all CT specimens using DIC, and corresponding mean R-curve. Each symbol corresponds to one CT test.

Fig. 1. Points M and N before and after crack propagation.

Fig. 2. Different position of the discontin

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This paper presents a new methodology to measure the crack resistance curves associated with fiberdominated failure modes in polymer–matrix composites.