A MEASURING METHOD OF TEMPERATURE TRANSFER CHARACTERISTICS OF WOVEN FABRICS

Abstract

This paper describes an attempt to detect the irregular temperature fluctuation (output signal) right after passing through woven fabrics by the use of a special CA thermopile having high sensitivity and fine frequency characteristics. By finding the ratios of changes in amplitude and phase of inputoutput signals, we have tried to measure temperature transfer characteristics of woven fabrics in case of the dynamic state.
The main results obtained are as follows.
1) The temperature transfer characteristics of woven fabrics are closely related to the degree of the air permeability; the higher the degree is, the better temperature transfer characteristics are.
2) {G (s)}, the temperature transfer function of woven fabrics, can be expressed as G (s)=e^-L_s/(1+T_s). Thus, the temperature transfer characteristics of woven fabrics are evaluated by calculating the value of T and L.