Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking
The effect of hard particle grit size on friction coefficients and particle embedment of braking system was investigated using a model brake test rig. Silica sand grit sizes ranging from 180 - 355 µm were used in drag and stop mode braking application and results were compared to the tests without t...
| Main Authors: | , |
|---|---|
| Format: | Journal Article |
| Published: |
Universiti Teknologi Malaysia
2009
|
| Subjects: | |
| Online Access: | http://jurnalmekanikal.fkm.utm.my/?id=No_29_&pid=705 http://hdl.handle.net/20.500.11937/21431 |
| _version_ | 1848750588456599552 |
|---|---|
| author | Abdul Hamid, Mohd Kameil Stachowiak, Gwidon |
| author_facet | Abdul Hamid, Mohd Kameil Stachowiak, Gwidon |
| author_sort | Abdul Hamid, Mohd Kameil |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The effect of hard particle grit size on friction coefficients and particle embedment of braking system was investigated using a model brake test rig. Silica sand grit sizes ranging from 180 - 355 µm were used in drag and stop mode braking application and results were compared to the tests without the grit particles in order to determine the changes in friction coefficient (CoF) and the percentage ofparticle embedment. Sliding speeds of 4 m/s, 8 m/s, 10 m/s and 12 m/s at constant pressures of 0.6 MPa, 0.8 MPa and 1 MPa were applied during the tests. Results showed that the presence of hard particles and grit size has significant effect on the CoF values. The values of CoF tend to reduce when grit particles are present. However, CoF values increase with sliding speed and applied pressure. Weardebris and particle embedment of silica sand was analyzed using SEM and optical microscopy after the test. Particle embedment (PE) of 1- 2 % of the pad area was observed. Fragmentation of hard particle has occurred only at high applied pressures. Also correlation between PE and CoF values was found to be slightly an inverse relationship as small reduction of CoF values with higher percentageof PE was determined. |
| first_indexed | 2025-11-14T07:39:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-21431 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:39:13Z |
| publishDate | 2009 |
| publisher | Universiti Teknologi Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-214312017-02-28T01:36:13Z Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking Abdul Hamid, Mohd Kameil Stachowiak, Gwidon silica sand Braking systems hard particles grit size particle embedment friction coefficients The effect of hard particle grit size on friction coefficients and particle embedment of braking system was investigated using a model brake test rig. Silica sand grit sizes ranging from 180 - 355 µm were used in drag and stop mode braking application and results were compared to the tests without the grit particles in order to determine the changes in friction coefficient (CoF) and the percentage ofparticle embedment. Sliding speeds of 4 m/s, 8 m/s, 10 m/s and 12 m/s at constant pressures of 0.6 MPa, 0.8 MPa and 1 MPa were applied during the tests. Results showed that the presence of hard particles and grit size has significant effect on the CoF values. The values of CoF tend to reduce when grit particles are present. However, CoF values increase with sliding speed and applied pressure. Weardebris and particle embedment of silica sand was analyzed using SEM and optical microscopy after the test. Particle embedment (PE) of 1- 2 % of the pad area was observed. Fragmentation of hard particle has occurred only at high applied pressures. Also correlation between PE and CoF values was found to be slightly an inverse relationship as small reduction of CoF values with higher percentageof PE was determined. 2009 Journal Article http://hdl.handle.net/20.500.11937/21431 http://jurnalmekanikal.fkm.utm.my/?id=No_29_&pid=705 Universiti Teknologi Malaysia restricted |
| spellingShingle | silica sand Braking systems hard particles grit size particle embedment friction coefficients Abdul Hamid, Mohd Kameil Stachowiak, Gwidon Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title | Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title_full | Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title_fullStr | Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title_full_unstemmed | Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title_short | Effect of Hard Particle Grit Size on Friction Coefficients and Embedment of Automotive Braking |
| title_sort | effect of hard particle grit size on friction coefficients and embedment of automotive braking |
| topic | silica sand Braking systems hard particles grit size particle embedment friction coefficients |
| url | http://jurnalmekanikal.fkm.utm.my/?id=No_29_&pid=705 http://hdl.handle.net/20.500.11937/21431 |