Finite Element Data Reduction Based Energy Release Rate for Delamination Tests

Abstract:

This paper deals with the advantages of the finite element modeling and design, especially, of delamination test coupons involved in fracture analysis of laminated composite plates. This is shown through two relevant aspects in delamination toughness measuring, say: data reduction and Iso-G delamination front design. Many experimental data reductions are based on beam theories and thus assumes straight delamination front during propagation, which is not true when investigating laminates with general anisotropy. Another aspect is also emphasized, and concern test procedure simplification to avoid displacement measurements. This is done through a direct energy release rate calculations via the crack closure integral method.

• Periodical: Key Engineering Materials (Volume 498)
• Pages: 67-78
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.498.67
• Online since: January 2012
• Authors: S. Choukri, Moussa Karama
• Keywords: Composite, Crack Closure Integral, Delamination Testing, Energy Release Rate, Finite Element

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