A novel method for testing and determining ILSS for marine and offshore composites. (15th July 2019)

• Record Type: Journal Article
• Authors: Gagani, Abedin I.; Krauklis, Andrey E.; Sæter, Erik; Vedvik, Nils Petter; Echtermeyer, Andreas T.
• Is Part Of: Composite structures. Volume 220(2019)
• Page Start: 431
• Page End: 440
• Publication Date: 2019-07-15
• Subjects: Polymer-matrix composites (PMCs) -- Environmental degradation -- Fatigue -- Interlaminar shear -- Finite Element Analysis (FEA); Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2019.04.040
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: A novel method is proposed for interlaminar shear testing of marine composites, which accelerates fluid saturation: the I-beam short beam shear test. A layered finite element (FE) model is employed to explain the nonlinear behavior of the short beam shear experiment. Using this model, rectangular and I-beam short beam shear results are compared, yielding consistent results. Dry and saturated specimens are also compared for the I-beam geometry proposed. The model can simulate these effects and enables attributing the nonlinear behavior of the composite interlaminar shear response to the plasticity of the resin rich inter-ply. In both dry and saturated conditions, the interlaminar shear strength of the composite can be estimated mainly from the matrix properties.