Abstract
The distribution of the life of girdles has been found to be well simulated to the Weibull's curve. The shape factor m and scale parameter t'0 of the curves in the different cases under some conditions of tests are shown in the following table.
(1) Column 1 shows that the samples tend to deteriorate their performances even at the beginning of the utilization.
(2) Column 2 shows that hard type samples are more deteriorated than soft ones.
(3) Column 3 shows that the samples washed in a weak alkaline detergent solution are more deteriorated than those washed in the neutral detergent solution.
(4) A machine washing tends to rather deteriorate girdles than a hand washing does.
The results of the survey have revealed the parts likely to be deteriorated and reasons of a disuse of girdles
