Tuning of Friction Oscillation Amplitude in Halloysite, Montmorillonite, and Wollastonite Filled Friction Composites: Load, Speed, and Temperature Sensitivity

Abstract

The influence of clay mineral silicate types, such as halloysite, montmorillonite, and wollastonite with tubular, plate like, and acicular morphologies respectively, on frictional oscillation of composite materials has been evaluated on chase-type dynamometer and optimized following the combination of Taguchi’s L9 design of experiment and regression analysis approaches. The coefficient of friction of ∼0.35–0.45 and cumulative wear at &lt

10% remained well within the acceptable range. The optimal tuning of friction oscillation to reduce braking-induced noise and vibration propensity has been achieved by montmorillonite clay with platelet-type morphology or by combination of MgO and wollastonite clay with acicular morphology. The extent of Fe- content in wear debris close to ∼80% on the composite surface led to an optimal level of friction oscillation amplitude (Aamp). The hierarchical ranking of the clay-based composites by technique for an order of preference by similarity to ideal solution (TOPSIS)-based operation research approach leads to the understanding of design ideology optimization for composites to ensure minimal friction oscillations.