Article,
Measurement of Garment Pressure (Part 1) - Pressure Estimation from Local Strain of Fabric
Sen'i Gakkaishi, (1988)
Abstract
An idea to estimate the pressure brought on a human body by his clothes from the measurements on the deformation of the fabric is presented with a few experimental verifications. To this end, an experimental model system is used; a rubber film substrate and a sample fabric model are put on an even stage, and they are fastened by a circular or an elliptical ring; the fabric together with the rubber film is ballooned into a dome-like shape by air pressure; the air pressure measured is a direct estimation for the garment pressure. For the indirect estimation, the strains of the threads are measured and transformed into the tensions through their stress-strain relationships; the garment pressure (P) is calculated through the relation P=N1/R1+N2/R2, where N1 and N2 are the effective tensions in the directions corresponding to the principal curvatures R1 and R2. The pressure thus estimated coincides approximately with the one measured directly.
