Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials
For braking system, rubbing between disc and brake pad generates heat, physical transformation on the contact, and activates many complex solicitations. Therefore, researchers used reduced scale testing to evaluate tribological and thermomechanical performance of friction composite. The pin-on-disc...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024013768 |
| _version_ | 1797304482811346944 |
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| author | Amira Sellami Riadh Elleuch |
| author_facet | Amira Sellami Riadh Elleuch |
| author_sort | Amira Sellami |
| collection | DOAJ |
| description | For braking system, rubbing between disc and brake pad generates heat, physical transformation on the contact, and activates many complex solicitations. Therefore, researchers used reduced scale testing to evaluate tribological and thermomechanical performance of friction composite. The pin-on-disc configuration of the tribometer is considered the better solution to reproduce these generated transformation and friction evolution. However, if the pin geometry is chospaden based on representative elementary volume (REV) approach, no research has investigated and justified the choice of the disc geometry and thickness. In this research work, an examination of the critical disc thickness is discussed, highlighting its substantial impact on the friction-wear behavior during brake application. For that, four disc thicknesses were tested, varying on thickness values (10, 15, 20, and 22 mm). Through this experiment, the friction coefficient evolution as function of braking numbers and sliding duration was studied while maintaining pressure and sliding velocity constant. Wear and temperature rise are identified for each disc thickness situation. A 3D thermal model is employed also to simulate the heat conduction and dissipation in brake system for various disc thickness. The temperature predictions are carried out using Ansys software. Experimental investigation presented the effect of the thickness on the friction stability, particularly at high temperature. Numerical results highlight the effect of reducing the thickness of the disc on the kinetic temperature rise through a rapid increase in disc temperature. The thickness modification used for the brake disc enhances the resulted thermal response and tribological brake pad performance, and consequently enhance the reliability of tribometer outcomes. |
| first_indexed | 2024-03-08T00:10:08Z |
| format | Article |
| id | doaj.art-6a2394c15f9d4e91b2494f9992e42f8b |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-08T00:10:08Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-6a2394c15f9d4e91b2494f9992e42f8b2024-02-17T06:40:43ZengElsevierHeliyon2405-84402024-02-01103e25345Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materialsAmira Sellami0Riadh Elleuch1Laboratory of Electro-Mechanical System (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax, Tunisia; Higher Institute of Transport and Logistics of Sousse, University of Sousse, TunisiaLaboratory of Electro-Mechanical System (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax, Tunisia; Corresponding author.For braking system, rubbing between disc and brake pad generates heat, physical transformation on the contact, and activates many complex solicitations. Therefore, researchers used reduced scale testing to evaluate tribological and thermomechanical performance of friction composite. The pin-on-disc configuration of the tribometer is considered the better solution to reproduce these generated transformation and friction evolution. However, if the pin geometry is chospaden based on representative elementary volume (REV) approach, no research has investigated and justified the choice of the disc geometry and thickness. In this research work, an examination of the critical disc thickness is discussed, highlighting its substantial impact on the friction-wear behavior during brake application. For that, four disc thicknesses were tested, varying on thickness values (10, 15, 20, and 22 mm). Through this experiment, the friction coefficient evolution as function of braking numbers and sliding duration was studied while maintaining pressure and sliding velocity constant. Wear and temperature rise are identified for each disc thickness situation. A 3D thermal model is employed also to simulate the heat conduction and dissipation in brake system for various disc thickness. The temperature predictions are carried out using Ansys software. Experimental investigation presented the effect of the thickness on the friction stability, particularly at high temperature. Numerical results highlight the effect of reducing the thickness of the disc on the kinetic temperature rise through a rapid increase in disc temperature. The thickness modification used for the brake disc enhances the resulted thermal response and tribological brake pad performance, and consequently enhance the reliability of tribometer outcomes.http://www.sciencedirect.com/science/article/pii/S2405844024013768Friction composite materialPin-on-discDisc thicknessNumerical model |
| spellingShingle | Amira Sellami Riadh Elleuch Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials Heliyon Friction composite material Pin-on-disc Disc thickness Numerical model |
| title | Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials |
| title_full | Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials |
| title_fullStr | Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials |
| title_full_unstemmed | Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials |
| title_short | Effect of cast-iron disc thickness on the reliability of tribological data from pin-on-disc test: Case study of brake friction materials |
| title_sort | effect of cast iron disc thickness on the reliability of tribological data from pin on disc test case study of brake friction materials |
| topic | Friction composite material Pin-on-disc Disc thickness Numerical model |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024013768 |
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