Effects of external hard particles on brake friction characteristics during hard braking
The effects of external hard particles on the friction coefficients and its oscillation amplitudes during hard braking were investigated. Silica sands of the size between 180 to 355 μm were used during the experiments. The results were compared to the results obtained without the grit particles pres...
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| Format: | Article |
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Penerbit UTM Press
2012
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| _version_ | 1796859044308189184 |
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| author | Abdul Hamid, Mohd. Kameil Stachowiak, Gwidon |
| author_facet | Abdul Hamid, Mohd. Kameil Stachowiak, Gwidon |
| author_sort | Abdul Hamid, Mohd. Kameil |
| collection | ePrints |
| description | The effects of external hard particles on the friction coefficients and its oscillation amplitudes during hard braking were investigated. Silica sands of the size between 180 to 355 μm were used during the experiments. The results were compared to the results obtained without the grit particles present in order to determine the change in friction coefficient and the fluctuation of frictional oscillation amplitude. Different sliding speeds were applied and external hard particle of different size is found to significantly affect the friction coefficient and standard deviation of friction oscillation amplitude values. The friction coefficients increase with hard particle due to the rapid changes of the effective contact area and the abrasion mode. Some embedded particles operating in two body abrasion mode help to increase the disc surface roughness and influence the stopping time of the disc. The standard deviation values of friction oscillation amplitude however were stable due to more wear debris produced and get compacted to form friction films assisting friction and they tend to reduce at medium speeds because many contact plateaus and effective contact area started to stabilize. |
| first_indexed | 2024-03-05T19:21:22Z |
| format | Article |
| id | utm.eprints-46889 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:21:22Z |
| publishDate | 2012 |
| publisher | Penerbit UTM Press |
| record_format | dspace |
| spelling | utm.eprints-468892017-11-01T04:17:12Z http://eprints.utm.my/46889/ Effects of external hard particles on brake friction characteristics during hard braking Abdul Hamid, Mohd. Kameil Stachowiak, Gwidon TK Electrical engineering. Electronics Nuclear engineering The effects of external hard particles on the friction coefficients and its oscillation amplitudes during hard braking were investigated. Silica sands of the size between 180 to 355 μm were used during the experiments. The results were compared to the results obtained without the grit particles present in order to determine the change in friction coefficient and the fluctuation of frictional oscillation amplitude. Different sliding speeds were applied and external hard particle of different size is found to significantly affect the friction coefficient and standard deviation of friction oscillation amplitude values. The friction coefficients increase with hard particle due to the rapid changes of the effective contact area and the abrasion mode. Some embedded particles operating in two body abrasion mode help to increase the disc surface roughness and influence the stopping time of the disc. The standard deviation values of friction oscillation amplitude however were stable due to more wear debris produced and get compacted to form friction films assisting friction and they tend to reduce at medium speeds because many contact plateaus and effective contact area started to stabilize. Penerbit UTM Press 2012 Article PeerReviewed Abdul Hamid, Mohd. Kameil and Stachowiak, Gwidon (2012) Effects of external hard particles on brake friction characteristics during hard braking. Jurnal Teknologi (Sciences and Engineering), 58 (SUP. 2). pp. 53-58. ISSN 0127-9696 http://dx.doi.org/10.11113/jt.v58.1548 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Abdul Hamid, Mohd. Kameil Stachowiak, Gwidon Effects of external hard particles on brake friction characteristics during hard braking |
| title | Effects of external hard particles on brake friction characteristics during hard braking |
| title_full | Effects of external hard particles on brake friction characteristics during hard braking |
| title_fullStr | Effects of external hard particles on brake friction characteristics during hard braking |
| title_full_unstemmed | Effects of external hard particles on brake friction characteristics during hard braking |
| title_short | Effects of external hard particles on brake friction characteristics during hard braking |
| title_sort | effects of external hard particles on brake friction characteristics during hard braking |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT abdulhamidmohdkameil effectsofexternalhardparticlesonbrakefrictioncharacteristicsduringhardbraking AT stachowiakgwidon effectsofexternalhardparticlesonbrakefrictioncharacteristicsduringhardbraking |