A Statistical Study on the Deterioration of Girdles

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  • ボードル使用状況の統計的研究　　ワイブル分布の応用
  • ガードル シヨウ ジョウキョウ ノ トウケイテキ ケンキュウ ワイブル ブンプ
  • ワイブル分布の応用

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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.<BR>(1) Column 1 shows that the samples tend to deteriorate their performances even at the beginning of the utilization.<BR>(2) Column 2 shows that hard type samples are more deteriorated than soft ones.<BR>(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.<BR>(4) A machine washing tends to rather deteriorate girdles than a hand washing does.<BR>The results of the survey have revealed the parts likely to be deteriorated and reasons of a disuse of girdles

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