Effect of Load and Sliding Velocity on Friction Coefficient of Aluminum Sliding Against Different Pin Materials

Abstract

In the present research, friction coefficients of aluminum sliding against different pin materials are investigated and compared. In order to do so, a pin on disc apparatus is designed and fabricated. Experiments are carried out when different types of pin such as aluminum, copper and brass slide on aluminum disc. Experiments are conducted at normal load 5, 7.5 and 10 N, sliding velocity 0.5, 0.75 and 1 m/s and relative humidity 70%. Variations of friction coefficient with the duration of rubbing at different normal load and sliding velocity are investigated. Results show that friction coefficient varies with duration of rubbing, normal load and sliding velocity. In general, friction coefficient increases for a certain duration of rubbing and after that it remains constant for the rest of the experimental time. Moreover, the obtained results reveal that friction coefficient increases with the increase in normal load and sliding velocity for all the tested pairs. The magnitudes of friction coefficient are different for different material pairs depending on normal load and sliding velocity.

Effect of the Normal Load on the Friction and Wear Behaviour of Nickel-based Alloys Ni-Cr-B-Si-C-W

“…However, in our study we have chosen the parameter of normal load. [14] Reported that normal load are ones of major factors whose play significant role for the variation of friction and wear rate. These last ones make their study difficult in laboratory given the difficulty of reproducing the same industrial environment (wear and friction of mechanical parts in some mechanical devices).…”

Effect of humid tropical climate on friction characteristic of pneumatic cylinders

“…The experimental equation (5,6,7) shows that the dynamic friction force F D of the pneumatic cylinder is significantly influenced by the relative humidity and the air temperature. The law of variation of dynamic friction depends on the temperature -humidity as the static friction.…”

“…The results show that at low RH and high temperature, the wear coefficient is low and vice versa, the wear coefficient is high when the RH is high, and T is low. The studies [3][4][5][6][7][8] have shown that the friction of material pairs is significantly influenced by air humidity, which decreases with increasing relative humidity. The climatic environment characteristics (RH, T) also directly affect the friction of the pneumatic cylinder.…”

Износ И Коэффициент Трения Супермодифицированного Заэвтектического Сплава Алюминия С Кремнием

“…3, d). Увеличение f со временем или расстоянием скольжения объясняется увеличением шероховатости поверхности контакта в процессе трения, которое ранее наблюдалось на алюминии в работе [6]. Второй причиной медленного роста коэффициента трения во всем исследованном интервале температур могло быть повышение температуры вблизи контакта.…”