A STUDY ON TEXTILE STRUCTURE USED AS STRAIN SENSOR MADE OF STAINLESS STEEL FIBER

摘要

It is first proposed that textile structures made of stainless steel (SS) fiber can be used to measure large strain under high temperature. Four knitting structures are designed and applied as strain sensor. In this paper, it is observed that the resistance of SS fiber fabric has a linear relationship with strain within a definite range. Any change in fabric structure may cause changes of the linear range and sensitivity of the strain sensor. The effect of the maximum strain of tensile cycle on the sensitivity has also been discussed. Based on the experimental result, a strain sensor of SS fiber textile structure has been designed and tested. The main mechanism of fabric sensing has been deduced to be the change of contact resistance between yarns during stretching. It is proved that this SS fabric can be used to monitor strain change in various technological areas.