Evaluating the Repeatability of Tire Wear Particle Measurements in a Novel Housing-Based Collection System

Abstract

Accurate and repeatable measurement methodologies are essential for ensuring comparability and reliability in non-exhaust emission assessments. This study investigates the repeatability of a novel housing-based tire road wear particles (TRWP) sampling system under controlled roller test bench conditions. High-resolution particle number concentration (PNC) measurements were conducted across three speed sections of a standardized driving cycle. Results demonstrated increased concentrations and reduced coefficient of variation (CoV) at higher speeds, improving measurement stability and minimizing variability. These findings emphasize the necessity of standardized procedures to enhance TRWP data comparability and facilitate interlaboratory reproducibility.