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An experimental study into the effect of damage on the capacitance of structural composite capacitors
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-0630-2037
2013 (Engelska)Ingår i: Journal of Multifunctional Composites, ISSN 2168-4246, Vol. 1, nr 2, s. 91-97Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This paper presents the work to characterise the effects of tensile induced matrix cracks on capacitance of structural composite capacitor materials. The study is based on earlier work within the field of multifunctional materials where mechanical and electrical properties have been characterised. Effects of damage on electrical properties have, however, not been covered by earlier studies. The structural capacitor materials were made from carbon fibre/epoxy pre-pregs as structural electrodes with thermoplastic PET as the dielectric separator. NaOH etching was used as a route for improved adhesion between the epoxy and PET to ensure matrix cracking in the CFRP electrodes occurred prior to delamination between the electrodes and the PET separator. A method to induce and measure the effect of the matrix cracks on electrical properties was successfully developed and used in this study. The method is based on a simple tensile test and proved to be quick and easy to perform with consistent results. The structural capacitor material was found to maintain its capacitance even after significant intralaminar matrix cracking in the CFRP electrodes from high tensile mechanical loads.

Ort, förlag, år, upplaga, sidor
2013. Vol. 1, nr 2, s. 91-97
Nationell ämneskategori
Kompositmaterial och -teknik
Forskningsämne
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-4799Lokalt ID: 2c8cc67a-089b-4283-ad84-6465774098beOAI: oai:DiVA.org:ltu-4799DiVA, id: diva2:977673
Anmärkning

Godkänd; 2013; 20131126 (leiasp)

Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-06-14Bibliografiskt granskad

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http://www.memberjournal.com/ojs/index.php?journal=JMC&page=article&op=view&path%5B%5D=74

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Carlson, TonyAsp, Leif

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