Guades, Ernesto and Aravinthan, Thiru (2012) Residual properties of square FRP composite tubes subjected to repeated axial impact. Composite Structures . ISSN 0263-8223 (In Press)
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Identification Number or DOI: doi: 10.1016/j.compstruct.2012.08.041
In this paper, the residual properties of square composite tubes under axial impact were experimentally investigated. The effects of damage factors such as the mass of the impactor, incident energy, and number of impacts on their post-impact behaviour were emphasised. Low-velocity impact tests were performed by repeatedly impacting a 100 mm square FRP pultruded tube with energy levels up to 742 J using a drop-weight apparatus. Coupons were then taken from the impacted tubes and tested statically to determine the residual compressive, tensile, and flexural properties. Results show that the levels of impact energy, number of impacts, and the mass of the impactor significantly influenced the residual strength degradation of the impacted tubes. Their effects, however, are almost negligible in the residual modulus property. It was found that the maximum reductions of residual compressive, tensile, and flexural strengths of the impacted tubes are 6.8%, 0.3%, and 10%; respectively. It was also found that effect of impact damage on the reduction of residual compressive strength of the tube is concentrated only in region closer to the impact point.
|Item Type:||Article (Commonwealth Reporting Category C)|
|Additional Information:||Published online 24 August 2012. Permanent restricted access to ArticleFirst version in accordance with the copyright policy of the publisher.|
|Uncontrolled Keywords:||impact damage; post-impact behaviour; pultruded tubes; residual properties|
|Fields of Research (FOR2008):||09 Engineering > 0905 Civil Engineering > 090503 Construction Materials|
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
|Socio-Economic Objective (SEO2008):||E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering|
|Deposited On:||14 Sep 2012 18:10|
|Last Modified:||13 Mar 2013 16:22|
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