Measurement of Drape Coefficients of Fabrics and Description of Hanging Shapes of Fabrics

Part 5 : Relationship between Dynamic Drape Behavior of Fabrics and Mechanical Properties

Abstract

In the measurement of dynamic drape coefficient of fabrics, mean correlation coefficient between measured data and regressed values of revolving drape increase coefficient ; D_r, shows the highest value if the straight region of 2 nd step is decided from 50 to 130 rpm. Standard deviation of the correlation coefficient becomes the smallest value in this region. Therefore, the revolving drape increase coefficient could be defined as the slope of dynamic drape coefficient versus revolution speed curves in the region between 50 and 130 rpm. Relationship between D_r, revolving drape coefficient at 200 rpm ; D₂₀₀, and mechanical parameters of bending and shearing properties were studied precisely and the regression equations were derived from those mechanical parameters. It was shown clearly that D_r and D₂₀₀ are controlled predominantly by shearing property rather than bending property as it has the effect on conventional static drape coefficient.