Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes

While in service environment, the changes in the degradation mechanisms of the GRE composite pipes may occur in the matrix, fibre, and the fibre-matrix interfacial regions due to water diffusion. These composite pipes may also be subjected to impact loads, during manufacturing, installation or whil...

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Format:	Thesis
Language:	English
Subjects:	Composite Materials Glass fibers Fibrous composites GRE composite pipes
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/4/Hawa%20Ahmad.pdf
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id	my-unimap-77181
record_format	uketd_dc
spelling	my-unimap-771812022-11-24T08:13:29Z Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes Mohd Shukry, Abdul Majid, Dr. While in service environment, the changes in the degradation mechanisms of the GRE composite pipes may occur in the matrix, fibre, and the fibre-matrix interfacial regions due to water diffusion. These composite pipes may also be subjected to impact loads, during manufacturing, installation or while in service. This research involves an experimental investigation of the deformation and failure on unaged and aged GRE composite pipes through the impact loadings and monotonic burst tests. Pipes were aged in tap water temperature at 80°C for periods of 500, 1000 and 1500 h in order to simulate in service environments, while trying to obtain reliable results from accelerated laboratory tests. At the end of ageing condition period, the pipes were impacted at room temperature for three different energy levels, which are 5 J, 7.5 J and 10 J before subjected to monotonic burst tests. The hyperbolic tangent model produced better predictions of moisture diffusion rate to the experimental results. From the experimental results and mathematical analysis, it was evident that the modulus of GRE pipes were significantly degraded (27% in axial and 15% in hoop direction) due to water diffusion. The results indicated that as the impact energy increase the peak force, displacement and absorbed energy also increased. The increased absorbed energy signifies that more energy was consumed in damage growth of the pipes. The impacted pipes have been subjected to moisture absorption content above 1% yielded lower burst strength and the ratio of the residual burst strength also reduced rapidly by about 50%. Weepage and eruption failures were observed depending on the applied impact energies. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77181 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/1/Page%201-24.pdf d39cbade99c037fa2a0732869c139d7d http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/2/Full%20text.pdf 70be02cf3b1d984c6329140d17cd0aa5 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/4/Hawa%20Ahmad.pdf baff0423f44a262d8822deac2e86894b Universiti Malaysia Perlis (UniMAP) Composite Materials Glass fibers Fibrous composites GRE composite pipes School of Mechatronic Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Mohd Shukry, Abdul Majid, Dr.
topic	Composite Materials Glass fibers Fibrous composites GRE composite pipes
spellingShingle	Composite Materials Glass fibers Fibrous composites GRE composite pipes Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
description	While in service environment, the changes in the degradation mechanisms of the GRE composite pipes may occur in the matrix, fibre, and the fibre-matrix interfacial regions due to water diffusion. These composite pipes may also be subjected to impact loads, during manufacturing, installation or while in service. This research involves an experimental investigation of the deformation and failure on unaged and aged GRE composite pipes through the impact loadings and monotonic burst tests. Pipes were aged in tap water temperature at 80°C for periods of 500, 1000 and 1500 h in order to simulate in service environments, while trying to obtain reliable results from accelerated laboratory tests. At the end of ageing condition period, the pipes were impacted at room temperature for three different energy levels, which are 5 J, 7.5 J and 10 J before subjected to monotonic burst tests. The hyperbolic tangent model produced better predictions of moisture diffusion rate to the experimental results. From the experimental results and mathematical analysis, it was evident that the modulus of GRE pipes were significantly degraded (27% in axial and 15% in hoop direction) due to water diffusion. The results indicated that as the impact energy increase the peak force, displacement and absorbed energy also increased. The increased absorbed energy signifies that more energy was consumed in damage growth of the pipes. The impacted pipes have been subjected to moisture absorption content above 1% yielded lower burst strength and the ratio of the residual burst strength also reduced rapidly by about 50%. Weepage and eruption failures were observed depending on the applied impact energies.
format	Thesis
title	Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
title_short	Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
title_full	Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
title_fullStr	Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
title_full_unstemmed	Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes
title_sort	burst strength and impact performance on glass fibre reinforced epoxy (gre) composite pipes
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Mechatronic Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77181/4/Hawa%20Ahmad.pdf
_version_	1776104246876307456

Burst strength and impact performance on glass fibre reinforced epoxy (GRE) composite pipes

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