Notice of RetractionThe effect of water immersion ageing on tensile strength of laminate

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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The residual strength of water immersion ageing glass fiber/epoxy laminate was presented. The moisture absorption property of matrix and the tensile properties of matrix, fiber and laminate were tested under the status of unageing and ageing. Based on the tests, the residual strength of the glass fiber/epoxy laminate after water immersion ageing was calculated using a bridging model. The numerical results indicate that the theoretical values by the method presented in this paper are well fit with tests results. The results show that the model could be used to predict the progressing damage regulation and the strength accurately under the condition of low moisture absorption ratio. When the failure of main stress layers are controlled by fiber, the descending of fiber tensile strength caused by water immersion result in the descending of the laminate maximum tensile strength directly. The major factor of affecting the residual strength of laminate are matrix hardening and tensile strength descending caused by water immersion to the layers controlled by matrix. The effect of the low moisture absorption ratio on the fiber-matrix interface strength is finite.