Journal article
Failure behavior of woven fiberglass composites under combined compressive and environmental loading
JOURNAL OF COMPOSITE MATERIALS, v 54(4), pp 519-533
Feb 2020
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Abstract
The purpose of this study is to quantitatively characterize the compressive and damage behavior of a woven fiberglass composite under combined environmental loading. Cuboidal samples of a commercially available woven fiberglass epoxy resin composite, garolite G10, are examined under uniaxial compressive loading perpendicular to the plies at quasi-static (10(-3) s(-1)) and dynamic (10(3 )s(-1)) strain rates using a standard load frame and Kolsky (split-Hopkinson) bar. In order to simulate environmental conditions, a subset of samples were soaked in either distilled or ASTM standard seawater prior to loading. Two time periods of environmental conditioning were investigated: short term at two weeks and long term at four months. Results demonstrate that, on average, the dynamic compressive strength of the fiberglass increased 35% from the quasi-static. Moreover, environmentally treated samples generally experienced a decrease strain to failure, and composites exposed to water for only short periods exhibited signs of the absorbed water sustaining additional load under quasi-static rates. Ultra-high-speed photography combined with digital image correlation, a full-field surface kinematic measurement technique, is used to map 2D strains on the sample during loading. In all cases, a clear shear failure mechanism from local instabilities appears, and a Mohr-Coulomb failure criterion is used to extract a mesoscale cohesive shear stress and coefficient of internal friction.
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Details
- Title
- Failure behavior of woven fiberglass composites under combined compressive and environmental loading
- Publication Details
- JOURNAL OF COMPOSITE MATERIALS, v 54(4), pp 519-533
- Publisher
- SAGE PUBLICATIONS LTD; LONDON
- Number of pages
- 0
- Grant note
- The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research is performed with the support of Office of Naval Research grant N00014-17-1-2497.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000491803300001
- Scopus ID
- 2-s2.0-85074541034
- Other Identifier
- 991021860781704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Composites