Large damage capability of non-crimp fabric thin-ply laminates

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Arteiro, A (Author) Other; Catalanotti, G (Author) Other; Xavier, J (Author) Other; Camanho, PP (Author) FEUP

Journal

Title: Composites Part A: Applied Science and Manufacturing

Vol. 63

Pages: 110-122

ISSN: 1359-835X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 34 Citations

Scopus - 35 Citations

Other information

Authenticus ID: P-009-D9K

DOI: 10.1016/j.compositesa.2014.04.002

Abstract (EN): The residual strength of thin-ply non-crimp fabric laminates with large through-the-thickness cracks is investigated in this paper. Analysis methods such as the linear elastic fracture mechanics, inherent flaw, point-stress, average-stress and Finite Fracture Mechanics are used to predict large damage capability. Experiments show that thin-ply non-crimp fabric laminates exhibit high resistance to propagation of large cracks and a remarked crack-bridging effect. Due to the unsuitability of existing models to capture such bridging processes, large damage capability is systematically underestimated by the traditional analysis methods. By taking into account the R-curve of the material in the Finite Fracture Mechanics analysis good predictions of the notched response of laminated plates with large through-penetration damage are obtained using only independently measured material properties; in addition, the Finite Fracture Mechanics model does not require fitting parameters or complex finite element analyses.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13