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79501

INFLUENCE OF REINFORCING POLYMETHYL METHACRYLATE BY CARBON FIBRES ON FRICTION AND WEAR

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Last updated: 25 Dec 2024

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Abstract

The present work aims to investigate the influence of reinforcing polymethyl methacrylate (PMMA) by continuous carbon fibres (CF) on the friction coefficient and wear resistance. Experiments have been carried to investigate the effect of earthing CF reinforced PMMA composites on the friction and wear behaviour of the tested composites by grounding them to have specific information about the effect of the electrostatic charge generated on the friction process.
 
It was found that reinforcing PMMA by carbon fibres increased friction coefficient. PMMA free of CF displayed relatively lower friction values than that observed for composites reinforced by 7.5 wt. % CF. It seems that presence of CF homogeneously distributes the generated electrostatic charge on the friction surface so that worn layer of PMMA composites was strongly adhered to the steel disc in a manner that the contact had become PMMA/PMMA and consequently friction coefficient displayed relatively higher values. When composites were grounded to the earth, friction coefficient showed lower values than that observed for ungrounded composites due to the leakage of the electrostatic charge outside the friction surface.
 
CF significantly enhanced the wear resistance by impeding the removal of material from the worn surface. Besides, the high CF stiffness combined with the good adhesion between fibres and PMMA matrix may develop the high wear resistance of the tested composites. Grounded composites displayed lower wear than ungrounded ones. This trend may be attributed to the ability of grounded composites to leak the electrostatic charge outside the friction surface due to good electrical conductivity of CF so that the worn the electrostatic charge gained by PMMA surface would be minimum. Based on that assumption, PMMA transfer into steel surface decreased.

DOI

10.21608/jest.2017.79501

Keywords

Friction, Wear, polymethyl methacrylate, carbon fibres, reinforcement

Authors

First Name

A. A.

Last Name

Ibrahim

MiddleName

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Affiliation

Production Engineering and Mechanical Design, Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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Volume

14

Article Issue

2

Related Issue

11868

Issue Date

2017-04-01

Receive Date

2016-10-20

Publish Date

2017-04-01

Page Start

52

Page End

60

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 14_Issue 2_Pages 52-60.pdf

PDF . 704.2kB

Link

https://jest.journals.ekb.eg/article_79501.html

Detail API

https://jest.journals.ekb.eg/service?article_code=79501

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5

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Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

INFLUENCE OF REINFORCING POLYMETHYL METHACRYLATE BY CARBON FIBRES ON FRICTION AND WEAR

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Article

Created At

22 Jan 2023