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Title: Effects of micromechanical factors in the strain invariant failure theory for composites
Keywords: strain invariant failure theory, composites, finite element method, damage progression, element-failure method
Issue Date: 27-Feb-2006
Citation: ARIEF YUDHANTO (2006-02-27). Effects of micromechanical factors in the strain invariant failure theory for composites. ScholarBank@NUS Repository.
Abstract: In this thesis, strain amplification factors of Strain Invariant Failure Theory (SIFT) for composites are obtained by three-dimensional finite element method. Strain amplification factors are obtained for a particular composite system, i.e. carbon/epoxy, and for a certain fiber volume fraction Vf (in this case, as reference, Vf = 60%). Parametric studies have also been performed to obtain strain amplification factors for Vf = 50% and Vf = 70%. Other composite systems such as glass/epoxy and boron/epoxy are also discussed in terms of strain amplification factors. Open-hole tension specimen is chosen to perform the growth of damage in composite plate. Finite element analysis incorporating Element-Failure Method (EFM) and SIFT within an in-house finite element code was performed to track the damage propagation in the open-hole tension specimen. The effect of fiber volume fraction can be captured by observing the damage progression.
Appears in Collections:Master's Theses (Open)

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