Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
| Autor: | Eliasidi Abu Othman, Talib Ria Jaafar, Noor Iswadi Ismail, Mohd Fauzi Ismail |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Dynamometer Rotor (electric) Mechanical Engineering 02 engineering and technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films law.invention Brake pad Rockwell scale 020303 mechanical engineering & transports General Energy 0203 mechanical engineering Volume (thermodynamics) law Powder metallurgy Brake Forensic engineering Composite material 0210 nano-technology Porosity |
| Zdroj: | Industrial Lubrication and Tribology. 69:420-424 |
| ISSN: | 0036-8792 |
| DOI: | 10.1108/ilt-09-2016-0230 |
| Popis: | Purpose This study aims to investigate the effect of different volume percentage (Vol.%) of steel fibre on the pressure, surface temperature and speed sensitivity behaviour during braking process as known brake effectiveness and to propose the best steel fibre Vol.% in the formulation. Design/methodology/approach Three brake pads composed of three different steel fibre volume percentages were fabricated through powder metallurgy route. Selecting one sample as based formulations, steel fibre (Vol.%) was decreased and increased by 50 per cent in the other two samples, respectively. The other ingredients are proportionally increased and decreased accordingly to the base formulation. The samples were tested for determining their hardness, porosity and coefficient of friction (COF) using Rockwell hardness tester, hot bath and brake inertia dynamometer, respectively. Findings Test results indicated that Sample T1 which composed of 9 Vol.% of steel fibre had the lowest COF and was sensitive to applied pressure, surface temperature and speed. The samples which composed of 18 and 27 Vol.% of steel fibre were having the same trend of COF and were sensitive to surface temperature and speed. Sample T which composed of 18 Vol.% of steel fibre had lower brake pad and disc lost as compared to Sample T2 which composed of 27 Vol.%. Mechanical properties did not show any significant correlation with COF sensitivity with temperature, speed and pressure. Originality/value The sample with 18 Vol.% of steel fibre was found to be the best formulation which produced acceptable COF; less sensitive to temperature, pressure and speed during braking process; and better wear resistance of brake pad as well as the rotor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|