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Fatigue behaviour of glass fibre reinforced polyurethane acrylate. / Mohd. Hanafiah Bin Abidin

Swansea University Author: Mohd. Hanafiah Bin Abidin

Abstract

A comprehensive study of the fatigue behaviour of a polyurethane acrylate resin and glass fibre reinforced composites has been undertaken. In the first part, three types of resins were tested: polyurethane vinyl ester, polyester and polyurethane acrylate, which was formulated to have superior proper...

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Published: 2002
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42552
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spelling 2018-08-02T16:24:29.6497963 v2 42552 2018-08-02 Fatigue behaviour of glass fibre reinforced polyurethane acrylate. 1db8e5b21616c75f1360e93a9f861f58 NULL Mohd. Hanafiah Bin Abidin Mohd. Hanafiah Bin Abidin true true 2018-08-02 A comprehensive study of the fatigue behaviour of a polyurethane acrylate resin and glass fibre reinforced composites has been undertaken. In the first part, three types of resins were tested: polyurethane vinyl ester, polyester and polyurethane acrylate, which was formulated to have superior properties. Three different types of glass fibre cloth were used for reinforcement, a woven roving and two novel stitch bonded Ulticloths. The [0/90]2s and [+/-45]2s lay-ups were prepared in order to investigate the effects of matrix, cloths and lay-up on fatigue strength and life time. Polyurethane acrylate composites proved to be superior to the polyester resin. The study on damage mechanisms also showed that the first damage was matrix cracking followed by interfacial failure, debonding, delamination and fibre facture which accumulate from the initial cycles until failure. The second part of this study concentrated only on polyurethane acrylate resin reinforced with Ulticloth [90/0]2s and Biaxial Ulticloth [+/-45]4 lay-ups. The data were produced to compare the effect of environment such as air, distilled water and seawater on the composite with tension-tension and tension-compression loading. With the [90/0]2s lay-up the fatigue strength and lifetime were reduced by the presence of distilled water and seawater. Once again, during fatigue testing with R=0.1, microscopic observations showed that these composites suffered severe damage. Samples tested in seawater had more damage compared with samples tested in air and distilled water. The last part of this research was to investigate the modulus degradation during the fatigue life. This investigation revealed that the modulus degradation on all laminates was dependent on stress ratio and lay-up. The modulus of [90/0]2s lay-ups was degraded during fatigue tests and this modulus degradation curve could be divided into three stages. The most clear damage occurring in [+/-45]4 was delamination which happened at both types of stress ratio, R=0.1 and R=-l. Analysis of some microscopic fractography has been carried out to support the observations. E-Thesis Materials science. 31 12 2002 2002-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:29.6497963 2018-08-02T16:24:29.6497963 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Mohd. Hanafiah Bin Abidin NULL 1 0042552-02082018162503.pdf 10805301.pdf 2018-08-02T16:25:03.5030000 Output 23951133 application/pdf E-Thesis true 2018-08-02T16:25:03.5030000 false
title Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
spellingShingle Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
Mohd. Hanafiah Bin Abidin
title_short Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
title_full Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
title_fullStr Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
title_full_unstemmed Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
title_sort Fatigue behaviour of glass fibre reinforced polyurethane acrylate.
author_id_str_mv 1db8e5b21616c75f1360e93a9f861f58
author_id_fullname_str_mv 1db8e5b21616c75f1360e93a9f861f58_***_Mohd. Hanafiah Bin Abidin
author Mohd. Hanafiah Bin Abidin
author2 Mohd. Hanafiah Bin Abidin
format E-Thesis
publishDate 2002
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description A comprehensive study of the fatigue behaviour of a polyurethane acrylate resin and glass fibre reinforced composites has been undertaken. In the first part, three types of resins were tested: polyurethane vinyl ester, polyester and polyurethane acrylate, which was formulated to have superior properties. Three different types of glass fibre cloth were used for reinforcement, a woven roving and two novel stitch bonded Ulticloths. The [0/90]2s and [+/-45]2s lay-ups were prepared in order to investigate the effects of matrix, cloths and lay-up on fatigue strength and life time. Polyurethane acrylate composites proved to be superior to the polyester resin. The study on damage mechanisms also showed that the first damage was matrix cracking followed by interfacial failure, debonding, delamination and fibre facture which accumulate from the initial cycles until failure. The second part of this study concentrated only on polyurethane acrylate resin reinforced with Ulticloth [90/0]2s and Biaxial Ulticloth [+/-45]4 lay-ups. The data were produced to compare the effect of environment such as air, distilled water and seawater on the composite with tension-tension and tension-compression loading. With the [90/0]2s lay-up the fatigue strength and lifetime were reduced by the presence of distilled water and seawater. Once again, during fatigue testing with R=0.1, microscopic observations showed that these composites suffered severe damage. Samples tested in seawater had more damage compared with samples tested in air and distilled water. The last part of this research was to investigate the modulus degradation during the fatigue life. This investigation revealed that the modulus degradation on all laminates was dependent on stress ratio and lay-up. The modulus of [90/0]2s lay-ups was degraded during fatigue tests and this modulus degradation curve could be divided into three stages. The most clear damage occurring in [+/-45]4 was delamination which happened at both types of stress ratio, R=0.1 and R=-l. Analysis of some microscopic fractography has been carried out to support the observations.
published_date 2002-12-31T03:53:11Z
_version_ 1763752638299504640
score 11.014067

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