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<journal-id>International Journal of Aerospace and Lightweight Structures</journal-id>
<publication_date>2012</publication_date>
<volume>2</volume>
<issue>2</issue>
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<doi>10.3850/S2010428612000347</doi>
<article-title>A Comparative Study for the Progressive Failure Analysis
of Double-Notched Glass/Epoxy Composite Laminates</article-title>
</title-group>

<author>Dinh Chi Pham</author>
<author-citation>Chi Pham, Dinh</author-citation>

<aff><sup>1</sup>Institute of High Performance Computing, A*STAR, 1 Fusionopolis Way,
#16-16, Connexis, Singapore 138632.</aff>
<email><a href="mailto:phamdc@ihpc.a-star.edu.sg">phamdc@ihpc.a-star.edu.sg</a></email>

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<abstract>
<title>ABSTRACT</title>
<p>This work proposes a comparative study for the progressive damage analysis of doublenotched
glass/epoxy composites with layups [90/0]s and [45/90/−45/0]s. The material
property degradation method (MPDM) is used to model the intra-lamina failure whereas
cohesive elements (CE) are employed to account for the delamination at the interfaces.
Different fracture mechanics-based and continuum damage mechanics-based failure theories
are considered in the MPDM-CE approach and a comparative study of these failure
theories is presented. The predictions are compared with the experimental results
reported by Hallett andWisnom [2006]. Reasonably good agreement between experiment
and simulation is obtained, showing that the MPDM-CE approach can effectively predict
the progressive failure in double-notched glass/epoxy composite laminates. Furthermore,
it is significantly revealed that a modification scheme for the progressive failure modeling
of fiber failure may be necessary to improve the strength prediction of notched
composites.</p><p><italic>Keywords: Progressive failure, Double-notched composite, Material Property Degradation Method (MPDM), Cohesive element, Failure criterion.</italic></p>
</abstract>
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