Capacitance-Based Sensor with Layered Carbon-Fiber Reinforced Polymer and Titania-Filled Epoxy

dc.contributor.author Yan, Jin
dc.contributor.author Downey, Austin
dc.contributor.author Chen, An
dc.contributor.author Laflamme, Simon
dc.contributor.author Laflamme, Simon
dc.contributor.author Hassan, Sammy
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Electrical and Computer Engineering
dc.contributor.department Center for Nondestructive Evaluation (CNDE)
dc.date 2019-09-22T23:09:05.000
dc.date.accessioned 2020-06-30T01:13:05Z
dc.date.available 2020-06-30T01:13:05Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2019
dc.date.issued 2019-07-29
dc.description.abstract <p>Advances in intelligent infrastructure can be achieved through the use of novel materials for increased system-level efficiency and multifunctionality. Carbon Fiber-Reinforced Polymer (CFRP) has been widely used in strengthening, rehabilitating, and retrofitting of existing structures because of its speed of deployment, low maintenance requirement, and high strength-to-weight ratio. In this work, the authors propose a novel method to augment CFRP with self-sensing capabilities. The sensor consists of two CFRP layers separated by a titania-filled epoxy dielectric layer, therefore forming a parallel plate capacitor. Sensing capability can be achieved through variations in the sensor’s capacitance provoked by strain, therefore providing an additional function that could be leveraged for structural health monitoring and structural health management purposes. Comprehensive testing, including (1) sensing properties on sensors with and without titania-doped epoxy and (2) electromechanical test on tension specimens subjected to both static and dynamic loading, was conducted. The test results show that doping the titania filler within the epoxy matrix can improve the sensor’s sensitivity. The gauge factor is 0.92 under static load and decreases with the increasing frequency up to 1 Hz. Therefore, it can be concluded that CFRP can be used as a self-sensing sensor without affecting its mechanical properties.</p>
dc.description.comments <p>This is a manuscript of an article published as Yan, Jin, Austin Downey, An Chen, Simon Laflamme, and Sammy Hassan. "Capacitance-Based Sensor with Layered Carbon-Fiber Reinforced Polymer and Titania-Filled Epoxy." <em>Composite Structures</em> (2019): 111247. DOI: <a href="http://dx.doi.org/10.1016/j.compstruct.2019.111247" target="_blank">10.1016/j.compstruct.2019.111247</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_pubs/239/
dc.identifier.articleid 1239
dc.identifier.contextkey 15075147
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_pubs/239
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13891
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/239/2019_LaflammeSimon_CapacitanceBased.pdf|||Fri Jan 14 22:50:05 UTC 2022
dc.source.uri 10.1016/j.compstruct.2019.111247
dc.subject.disciplines Civil Engineering
dc.subject.disciplines Polymer and Organic Materials
dc.subject.disciplines Structural Engineering
dc.subject.keywords Capacitor
dc.subject.keywords Multifunctional material
dc.subject.keywords Strain sensing
dc.subject.keywords Carbon fiber reinforced polymer
dc.subject.keywords Composite
dc.subject.keywords Structural health monitoring
dc.title Capacitance-Based Sensor with Layered Carbon-Fiber Reinforced Polymer and Titania-Filled Epoxy
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 933e9c94-323c-4da9-9e8e-861692825f91
relation.isOrgUnitOfPublication a75a044c-d11e-44cd-af4f-dab1d83339ff
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