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Abstract
An investigation is described in which, in a carpet-wear trial over a zig-zag course with near-180° turns, periodic measurements were made of the carpet thickness. The decrease in thickness with increase in the number of passages conformed to a logarithmic law throughout so great a part of the life of the carpet that it appears possible to make a usefully accurate prediction of the length of wear-life to backing from thickness changes during only a fraction of the wear-life.
The wear to backing in floor trials increased exponentially with the number of rubs to the end-point measured on the Wira Carpet Abrasion Machine.