Evaluation of three portable floor slipperiness testers

摘要: Abstract The validity, repeatability, precision and consistency of coefficient friction (COF) measurements taken with three portable in situ floor slipperiness testers were evaluated. selected test instruments represented common operating principles, a towed-sled (Gabbrielli SM), pendulum (Portable Skid Resistance Tester), an articulated-strut simultaneous application normal shear forces (Brungraber Mark II). performance these devices was studied against force platform biomechanically validated slip simulator as reference equipment. the PSRT acceptable but reduced at higher COF levels. validity for pedestrian resistance measurement must be improved. BMII more valid less consistent precise than pendulum. overall GSM poor. this instrument can seriously questioned. None able to meet technical specifications given their appropriate instructions use. present study indicates that there is urgent need design credible in-situ flooring testers. Relevance industry Valid reliable tests floorings, walkways stairs are needed routine control slipping falling injury risks monitoring effects preventive actions workplaces. Maintenance personnel search proper restoring housekeeping strategies enhancing safer environment. Flooring manufacturers, on contrary, verify improve optimum products.