Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.

The main purpose of this project is to design the material which promotes auxetic behaviour. Experiments have been conducted to identify the properties of UFC385/POLYESTER unidirectional tape. An analytical model using two dimensional constitutive equation using Classical Laminate Theory (CLT) has b...

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Main Author:	Mohd Safki, Syarmizar
Format:	Thesis
Language:	English
Published:	2006
Subjects:	Aeronautics Aeronautical engineering
Online Access:	https://ir.uitm.edu.my/id/eprint/38942/1/38942.pdf
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id	my-uitm-ir.38942
record_format	uketd_dc
spelling	my-uitm-ir.389422020-12-09T04:47:45Z Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki. 2006-05 Mohd Safki, Syarmizar Aeronautics. Aeronautical engineering The main purpose of this project is to design the material which promotes auxetic behaviour. Experiments have been conducted to identify the properties of UFC385/POLYESTER unidirectional tape. An analytical model using two dimensional constitutive equation using Classical Laminate Theory (CLT) has been proposed in order to determine the laminate properties. A composite laminate consists of continuous long carbon fibre unidirectional tape and polyester resin (UFC385/POLYESTER) is used as a model in this study. The auxetic behaviour of a laminate is identified by a negative value of the laminate Poisson's ratio. In contrast to conventional material, an auxetic material expand laterally when stretched and contract laterally when compressed [18]. This study concentrated on in-plane auxetic behaviour. This study has been divided into two parts. The first part will concentrate to the experimental determination of strength and stiffness of unidirectional tape. While, the second part is to determine the ply angle combination. On the first part, the properties of unidirectional tape have been identified to further use in second part. The result of second part will be the expected of this study. Extra works have been done as an extended work due to this study. The results of second part which give the auxetic behaviour have been developed. The purpose of this work is to test this laminate whether it gives the suppose result or not. But for this test, the other student has taken the responsibilities and the result is absolutely positive. At the end, the objectives of this project have been achieved and the auxetic material can be design using Classical Laminate Theory (CLT) to UFC385/POLYESTER composite. Here, for UFC385/POLYESTER the negative Poisson's Ratio can be clearly get at combination of angle [22.5°, 67.5°]s and [67.5°, 22.5°]s with value -0.33. The combination of the auxetic occurred at 0l equal to 22.5 and 67.5 while 02 in range of 50 to 88 and 9 to 41 respectively. 2006-05 Thesis https://ir.uitm.edu.my/id/eprint/38942/ https://ir.uitm.edu.my/id/eprint/38942/1/38942.pdf text en public degree Universiti Teknologi MARA Faculty of Mechanical Engineering Yahaya, Mohd Azman
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Yahaya, Mohd Azman
topic	Aeronautics Aeronautical engineering
spellingShingle	Aeronautics Aeronautical engineering Mohd Safki, Syarmizar Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
description	The main purpose of this project is to design the material which promotes auxetic behaviour. Experiments have been conducted to identify the properties of UFC385/POLYESTER unidirectional tape. An analytical model using two dimensional constitutive equation using Classical Laminate Theory (CLT) has been proposed in order to determine the laminate properties. A composite laminate consists of continuous long carbon fibre unidirectional tape and polyester resin (UFC385/POLYESTER) is used as a model in this study. The auxetic behaviour of a laminate is identified by a negative value of the laminate Poisson's ratio. In contrast to conventional material, an auxetic material expand laterally when stretched and contract laterally when compressed [18]. This study concentrated on in-plane auxetic behaviour. This study has been divided into two parts. The first part will concentrate to the experimental determination of strength and stiffness of unidirectional tape. While, the second part is to determine the ply angle combination. On the first part, the properties of unidirectional tape have been identified to further use in second part. The result of second part will be the expected of this study. Extra works have been done as an extended work due to this study. The results of second part which give the auxetic behaviour have been developed. The purpose of this work is to test this laminate whether it gives the suppose result or not. But for this test, the other student has taken the responsibilities and the result is absolutely positive. At the end, the objectives of this project have been achieved and the auxetic material can be design using Classical Laminate Theory (CLT) to UFC385/POLYESTER composite. Here, for UFC385/POLYESTER the negative Poisson's Ratio can be clearly get at combination of angle [22.5°, 67.5°]s and [67.5°, 22.5°]s with value -0.33. The combination of the auxetic occurred at 0l equal to 22.5 and 67.5 while 02 in range of 50 to 88 and 9 to 41 respectively.
format	Thesis
qualification_level	Bachelor degree
author	Mohd Safki, Syarmizar
author_facet	Mohd Safki, Syarmizar
author_sort	Mohd Safki, Syarmizar
title	Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
title_short	Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
title_full	Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
title_fullStr	Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
title_full_unstemmed	Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.
title_sort	design of composite material that promoting in-plane auxetic behaviour / syarmizar mohd safki.
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2006
url	https://ir.uitm.edu.my/id/eprint/38942/1/38942.pdf
_version_	1783734492425355264

Design of composite material that promoting in-plane auxetic behaviour / Syarmizar Mohd Safki.

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