Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes

Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite circular tubes i...

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Main Author:	Abosbaia, Al-Hadi A. Salem
Format:	Thesis
Language:	English English
Published:	2003
Subjects:	Composite construction
Online Access:	http://psasir.upm.edu.my/id/eprint/7987/1/ITMA_2003_1_.pdf
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id	my-upm-ir.7987
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spelling	my-upm-ir.79872023-11-29T04:37:11Z Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes 2003-04 Abosbaia, Al-Hadi A. Salem Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite circular tubes i n structural applications IS becoming more widespread throughout the auto motives, aircraft industry. This work examines the effect of segmentation on the crushing behaviour, energy absorption and failure mode of composite circular tubes. The segmented composite tube consists of more than one material, each with its own specific functions. Through out this study, segmented and non segmented composite tubes with different sequences were experimentally investigated under axial and lateral loading conditions. The effect of fibre reinforcement type and segments sequence on energy absorption and load carrying capacity were also presented and discussed. Load-displacement curves and deformation histories of typical specimens are presented and discussed. The results showed that non-segmented composite tubes were found to be very brittle (i.e. tissue mat glass fibre/epoxy tubes), and show very low initial failure crush load value of 1 .8 9kN, as well as low specific energy absorption value of O.065kJ/kg under axial crushing. Whereas, the carbon fabric fibre reinforced plastic (CFRP) tubes showed highest load-carrying capacity among the tested specimens with initial fai lure crush load value of I8.85kN as well as specific energy absorption value of I9 .27kJ/kg. On the other hand, segmented composite tubes including the tissue mat glass fibres were found to suffer from low energy absorption and the catastrophic failure mechanism initiated at the part made of tissue mat glass fibre/epoxy. Segmented Composite tubes from carbon fabric fibre and cotton fabric fibres exhibited good specific energy absorption value of 13.53 kj/kg as well as stable load-carrying capacity under axial loading. A change in segmentation sequence affects the crush loads significantly just for double fibre segmented composite tubes under lateral loading. The axial loaded segmented composite tubes have better load carrying capacity and energy absorption capability compared to the laterally loaded segmented composite tubes, and the failure modes were quite different. Composite construction 2003-04 Thesis http://psasir.upm.edu.my/id/eprint/7987/ http://psasir.upm.edu.my/id/eprint/7987/1/ITMA_2003_1_.pdf text en public masters Universiti Putra Malaysia Composite construction Institute of Advanced Technology Ahmed, Elsadig Mahdi English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Ahmed, Elsadig Mahdi
topic	Composite construction
spellingShingle	Composite construction Abosbaia, Al-Hadi A. Salem Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
description	Considerable research interest has been directed towards the use of composite for crashworthiness applications, because they can be designed to provide impact energy absorption capabilities which are superior to those of metals when compared on weight basis. The use of composite circular tubes i n structural applications IS becoming more widespread throughout the auto motives, aircraft industry. This work examines the effect of segmentation on the crushing behaviour, energy absorption and failure mode of composite circular tubes. The segmented composite tube consists of more than one material, each with its own specific functions. Through out this study, segmented and non segmented composite tubes with different sequences were experimentally investigated under axial and lateral loading conditions. The effect of fibre reinforcement type and segments sequence on energy absorption and load carrying capacity were also presented and discussed. Load-displacement curves and deformation histories of typical specimens are presented and discussed. The results showed that non-segmented composite tubes were found to be very brittle (i.e. tissue mat glass fibre/epoxy tubes), and show very low initial failure crush load value of 1 .8 9kN, as well as low specific energy absorption value of O.065kJ/kg under axial crushing. Whereas, the carbon fabric fibre reinforced plastic (CFRP) tubes showed highest load-carrying capacity among the tested specimens with initial fai lure crush load value of I8.85kN as well as specific energy absorption value of I9 .27kJ/kg. On the other hand, segmented composite tubes including the tissue mat glass fibres were found to suffer from low energy absorption and the catastrophic failure mechanism initiated at the part made of tissue mat glass fibre/epoxy. Segmented Composite tubes from carbon fabric fibre and cotton fabric fibres exhibited good specific energy absorption value of 13.53 kj/kg as well as stable load-carrying capacity under axial loading. A change in segmentation sequence affects the crush loads significantly just for double fibre segmented composite tubes under lateral loading. The axial loaded segmented composite tubes have better load carrying capacity and energy absorption capability compared to the laterally loaded segmented composite tubes, and the failure modes were quite different.
format	Thesis
qualification_level	Master's degree
author	Abosbaia, Al-Hadi A. Salem
author_facet	Abosbaia, Al-Hadi A. Salem
author_sort	Abosbaia, Al-Hadi A. Salem
title	Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
title_short	Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
title_full	Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
title_fullStr	Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
title_full_unstemmed	Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes
title_sort	axial and lateral quasi-static crushing behaviour of segmented and non-segmented composite tubes
granting_institution	Universiti Putra Malaysia
granting_department	Institute of Advanced Technology
publishDate	2003
url	http://psasir.upm.edu.my/id/eprint/7987/1/ITMA_2003_1_.pdf
_version_	1794018708356595712

Axial and Lateral Quasi-Static Crushing Behaviour of Segmented and Non-Segmented Composite Tubes

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