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dc.contributor.authorTrimiño, Luis
dc.contributor.authorCronin, Duane 16:34:10 (GMT) 16:34:10 (GMT)
dc.descriptionThis preprint has not undergone peer review or any post-submission improvements or corrections. The Version of Record of this article is published in the International Journal of Adhesion and Adhesives, and is available online at
dc.description.abstractThe design of adhesively joined components requires the ability to predict and model the joint response under expected operating conditions, including crash events for vehicle structures. Specifically, quantifying adhesive material damage accumulation from static and dynamic loading is essential to predict the response of bonded components in such scenarios. In this study, Vickers microhardness measurements were used as a forensic technique to quantify damage in bulk tensile samples for three structural epoxy adhesive materials: an untoughened epoxy; a toughened epoxy; and a high toughness epoxy. The samples were tested to failure over a range of strain rates (0.002–100 s-1), and hardness measurements were taken post-test along the gauge length. In general, for toughened epoxies the damage extended over much of the sample gauge length, while the untoughened epoxy demonstrated damage localization at the failure location. The hardness data support the contention that mechanisms such as crazing and shear banding play a role in microhardness changes in toughened epoxies. Increments in strain rate led to an increase in the damage localization. Microhardness measurements were a valuable tool to quantify damage, with the limitation that the magnitude of change in hardness could be adhesive-specific, hypothesized to be related to competing damage mechanisms. The benefits of this approach include the ability to spatially quantify damage, to detect strain rate effects and to carry out measurement of damage post-test in support of constitutive modeling and failure analysis.en
dc.description.sponsorshipThe authors would like to thank 3M Company, Initiative for Advanced Manufacturing Innovation, and Automotive Partnerships Canada for providing financial support for this research.en
dc.publisherElsevier ScienceDirecten
dc.relation.ispartofseriesInternational Journal of Adhesion and Adhesives;
dc.subjectdamage measurementen
dc.subjectstructural epoxy adhesivesen
dc.subjectstrain rate effectsen
dc.subjectshear bandingen
dc.titleDamage Measurements in Epoxy Structural Adhesives using Microhardnessen
dcterms.bibliographicCitationTrimiño, L. F., & Cronin, D. S. (2018). Damage measurements in epoxy structural adhesives using microhardness. International Journal of Adhesion and Adhesives, 82, 211–220.
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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