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dc.contributor.authorQuino, Gustavo
dc.contributor.authorEl Yagoubi, Jalal
dc.contributor.authorLubineau, Gilles
dc.date.accessioned2015-08-03T12:15:31Z
dc.date.available2015-08-03T12:15:31Z
dc.date.issued2014-11
dc.identifier.issn01413910
dc.identifier.doi10.1016/j.polymdegradstab.2014.08.005
dc.identifier.urihttp://hdl.handle.net/10754/563820
dc.description.abstractCharacterizing the change in toughness of polymers subjected to wet aging is challenging because of the heterogeneity of the testing samples. Indeed, as wet aging is guided by a diffusion/reaction process, compact tension samples (defined by the ASTM D5045 standard), which are relevant for toughness characterization but are somewhat thick, display a non-uniform moisture content over the bulk material. We define here a rigorous procedure to extract meaningful data from such tests. Our results showed that the relation between the moisture uptake of the whole sample and the measured toughness was not a meaningful material property. In fact, we found that the measured toughness depended on the locally varying moisture uptake over the cracking path. Here, we propose a post-processing technique that relies on a validated reaction/diffusion model to predict the three-dimensional moisture state of the epoxy. This makes identification of the variation in toughness with respect to the local moisture content possible. In addition, we analyze the fracture surface using micrography and roughness measurements. The observed variations in toughness are correlated with the roughness in the vicinity of the crack tip. © 2014 Elsevier Ltd. All rights rese.
dc.publisherElsevier BV
dc.subjectCT specimen
dc.subjectEpoxy
dc.subjectRoughness
dc.subjectToughness
dc.subjectWet aging
dc.titleCharacterizing the toughness of an epoxy resin after wet aging using compact tension specimens with non-uniform moisture content
dc.typeArticle
dc.contributor.departmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPolymer Degradation and Stability
kaust.personEl Yagoubi, Jalal
kaust.personLubineau, Gilles
kaust.personQuino, Gustavo


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