Open AccessInfluence of Tread Width of the Brake Pedal Pads on the Friction Coefficient Generated by Bare Foot and Footwear Soles
Author(s) -
A S A S Al-Osaimy Al-Osaimy
Publication year - 2012
Publication title -
maǧalaẗ ǧameʼaẗ al-malīk abdul aziz. al-uʼlum al-handasiaẗ
Language(s) - English
Resource type - Journals
ISSN - 1319-1047
DOI - 10.4197/eng.23-1.10
Subject(s) - tread , coefficient of friction , materials science , friction coefficient , brake , brake pad , natural rubber , composite material , work (physics) , metallurgy , mechanical engineering , engineering
The present work discusses the effect of the treads width ofthe rubber brake pedal pads on the friction coefficient. Measurementof friction coefficient generated by bare foot and rubber footwearsoles sliding against the brake pedal pads of different treads width indry, sand contaminated, water and oil lubricated conditions isdiscussed.Experiments of the sliding of bare foot against the rubberpedal pad showed that friction coefficient of dry sliding significantlydecreased with increasing tread width. The sliding direction has noeffect on the friction coefficient for the tested pads. In the presence ofsand particles separating the two contact surfaces, load had noinfluence on friction coefficient. Friction coefficient slightly decreasedwith increasing tread width. For water wetted pedal pad, frictioncoefficient displayed higher values than that observed for thecondition of presence of sand particles. Friction values showedconsistent trend with increasing the tread width. Friction displayed byoil lubricated pedal pads was the lowest and the sliding conditioncould be considered as unsafe.