Effects of energy level and impact repetitions on the impact fatigue behaviour and post-impact flexural properties of square FRP pultruded tubes

Guades, E. J. and Aravinthan, T. and Manalo, A. C. and Islam, M. M. (2013) Effects of energy level and impact repetitions on the impact fatigue behaviour and post-impact flexural properties of square FRP pultruded tubes. In: 22nd Australasian Conference on the Mechanics of Structures and Materials (ACMSM 22): From Materials to Structures: Advancement Through Innovation, 11-14 Dec 2012, Sydney, Australia.

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Abstract

This paper presents an experimental investigation on the effects of impact energy level and impact repetitions on the impact fatigue behaviour and post-impact flexural properties of square FRP composite tubes. Impact testing was done by axially impacting a 100 mm square pultruded tube with an energy level ranging from 158 to 742 J using a drop-weight impact apparatus. Coupons were then taken from the impacted tubes and tested statically under three-point bending to determine their post-impact flexural properties. The results showed that the effects of energy level and impact repetitions are significant on the rate of energy absorption behaviour of the FRP tubes before its collapse. Their effects, however, are negligible when the tube ruptures. It was also found that the post-impact flexural properties of the impacted tubes are reduced at higher impact energies and more impact repetitions. The maximum reduction of the strength and modulus are 10 and 3.7%, respectively.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Taylor & Francis Group. Permanent restricted access to published version.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 14 Apr 2013 05:30
Last Modified: 21 Oct 2014 04:51
Uncontrolled Keywords: FRP composites; impact behaviour; post-impact properties; pultruded tubes
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8612 Fabricated Metal Products > 861206 Structural Metal Products
URI: http://eprints.usq.edu.au/id/eprint/22598

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