Comfort Of The Clothing Pressure Test And Evaluation

In this thesis, the pressure comfort of 3 kinds of single knitted fabrics with different spandex contents was subjectively evaluated by real wearing test. And the pressure comfort under different elongation rates of these fabrics was exclusively evaluated with gray clustering.To study clothing pressure quantitatively, a device measuring clothing pressure was designed and constructed. In this device, a FSL05N2C piezoresistive sensor produced by Honeywell company in America was adopted, combined with high precision enlarge circuit, an accurate relationship between "in" and "out" signals can be directly perceived. To reduce the influence of temperature, a high quality constant-rate power source was chosen as supply power to the test circuit. Moreover, temperature compensation was applied in the circuit. Disturbing signals can be isolated by optoelectronic Coupler 4N25. ICL7107 A/D conversion device drives LED, which displaying the results isochronously. After the device was demarcated, it was embed in manikin.Using those chosen fabrics, through the measuring of static clothing pressures under different rates of elongation, the relation between clothing pressure and tensile elasticity was acquired. According to the chart, a tensile elasticity matrix was established. And the texture variation of stretch knitted fabrics was analyzed.Dynamic clothing pressure was classified as macroscopic and microcosmic in this paper. The former refers to the pressure change resulted from the skin elongation and reducing of room between clothing and skin in body movement, and the later to pressure change resulted from stress relaxation of clothing fabrics. By measurement and analysis, the influencing factors to dynamic clothing pressure were obtained.