Fatigue delamination propagation in a DCB specimen composed of a plain weave multi-directional laminate composite subjected to different load ratios

Ido Simon, Leslie Banks-Sills, Victor Fourman, Rami Eliasi

Research output: Contribution to conferencePaperpeer-review

Abstract

Double cantilever beam (DCB) specimens fabricated from 15 plies of plain woven prepreg (G0814/913) arranged in a multi-directional layup were tested by means of constant amplitude fatigue cycles under displacement control. Four different displacement cyclic ratios were used, namely 0.1, 0.33, 0.5 and 0.75. The delamination propagation rate da/dN was calculated from the experimental data and plotted with respect to different functions of the mode I energy release rate GI. When one of those functions, denoted here as KIeff was used, all of the data obtained for the different displacement ratios collapsed into one master curve. The experimental data was then back calculated from the master curve, enabling a reliable prediction of the delamination propagation rate da/dN for any given load ratio for this type of material and layup.

Original languageEnglish
StatePublished - 2016
Event56th Israel Annual Conference on Aerospace Sciences, IACAS 2016 - Tel-Aviv and Haifa, Israel
Duration: 9 Mar 201610 Mar 2016

Conference

Conference56th Israel Annual Conference on Aerospace Sciences, IACAS 2016
Country/TerritoryIsrael
CityTel-Aviv and Haifa
Period9/03/1610/03/16

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