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Experimental verification of interfacial strength effect on the mechanical properties of carbon fiber-epoxy composite
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2017 (English)In: International Journal on Advanced Science, Engineering and Information Technology, ISSN 2088-5334, E-ISSN 2460-6952, Vol. 7, no 6, p. 2226-2231Article in journal (Refereed) Published
Abstract [en]

The effects of carbon fiber-epoxy interfacial strength on the mechanical properties of the corresponding fiber-matrix composites are experimentally demonstrated in this work. Two composites containing different carbon fibers were tested: as-received fibers and fibers soaked in acetone to remove adhesive on their surfaces. The fiber surfaces were first characterized by scanning electron microscopy and time-of-flight secondary-ion mass spectrometry to verify removal of the adhesive. Further, single-fiber fragmentation tests were conducted to evaluate the fiber strength and the interfacial strength. The mechanical properties of the composites were evaluated via tensile testing under longitudinal and transverse loadings. The results show that interfacial strength does not decrease the mechanical properties of the composites under longitudinal loading. In contrast, under transverse loading, the interfacial strength significantly decreases the mechanical properties, specifically the ultimate tensile strength and toughness of the composites.

Place, publisher, year, edition, pages
Insight Society , 2017. Vol. 7, no 6, p. 2226-2231
Keywords [en]
Fiber-matrix composite, Interfacial strength, Mechanical properties, Tensile test
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-222927Scopus ID: 2-s2.0-85040585295OAI: oai:DiVA.org:kth-222927DiVA, id: diva2:1193708
Note

QC 20180327

Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-03-27Bibliographically approved

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Zaini, Ilman Nuran

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