Mechanical properties characterization of the skin and core of a novel composite sandwich structure

Manalo, A. C. and Aravinthan, T. and Karunasena, W. (2013) Mechanical properties characterization of the skin and core of a novel composite sandwich structure. Journal of Composite Materials, 47 (14). pp. 1785-1800. ISSN 0021-9983


This study has investigated the mechanical properties of the constituent materials of a novel structural composite
sandwich panel developed for structural applications. Properly designed and carefully conducted experiments using
coupon specimens following ISO and ASTM test standards were performed to characterize the flexural, tensile, compressive and shear properties of the fiber composite skins and the modified phenolic core of the composite sandwich structure. As a general behavior, the glass fiber composite skins behaved linearly elastic up to failure in both tension and compression with the tensile strength much higher than the compressive strength. The modified phenolic core behaved linearly elastic in tension but exhibited non-linear behavior in compression. The modified phenolic core material exhibited higher strength and modulus in shear and compression compared to the traditional core material systems. The improved mechanical properties of the core structure combined with the high-strength and lightweight glass fiber composite skins suggest a high potential of the novel composite sandwich panel for structural applications.
Furthermore, the results of this study provide an understanding of the fundamental behavior of the constituent materials of a novel sandwich structure providing a base knowledge from which further research could continue.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information (displayed to public): Published online 28 June 2012. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 22 Aug 2012 00:02
Last Modified: 13 Jan 2015 02:19
Uncontrolled Keywords: novel sandwich structure; glass fiber composites; phenolic core; mechanical characterization; coupon test
Fields of Research (FoR): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective (SEO): B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870399 Construction Materials Performance and Processes not elsewhere classified
Identification Number or DOI: 10.1177/0021998312451607

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