Influences Of Contact Site On Discrimination Threshold Of Fabric’s Transient Cool Feeling

When we touch the fabric,there is a certain temperature difference between skin and fabric,and then heat exchange occurred.Due to excessive heat dissipation on skin,we have an uncomfortable feeling which is called transient cool feeling.The more heat dissipation is,the cooler we feel.We can tell the cool feelings only when the intensity of cold stimulation from the fabric reaches a certain degree,which is called discrimination threshold of transient cool feeling.In this study,we chose the maximum transient heat flow Qmax as the objective index to describe transient cool feeling.The primary coverage of this research is to describe discrimination thresholds of transient cool feeling at different levels by using Qmax.The experiment was carried out under the condition of constant temperature and humidity,and the maximum transient heat flow was measured by Thermo Labo II KES-F7 instrument.Contact sites of volunteers are their fingertip,palm and forearm.Five grade evaluation scales(Normal,Slightly Cool,Cool,Cold and Very Cold)are chosen to describe different cool feelings.Discrimination thresholds of transient cool feeling are obtained and the influence of gender and contact site on it is analyzed.Here is the result after statistical analysis.(1)Discrimination thresholds of transient cool feeling at different levels are obtained.And it indicates that the threshold of male is higher than that of female no matter on which contact site.(2)The individual difference is greater among male volunteers.(3)In the experiment of fingertip and forearm,the gender had a significant influence on discrimination threshold of transient cool feeling at four levels;in the experiment of palm,gender plays an important role only at Cold level.(4)As for female,contact site had a significant influence on discrimination threshold of transient cool feeling at Cold and Very Cold level,and the result of palm is very different from fingertip and forearm.As for male,contact site had a significant influence on discrimination threshold of transient cool feeling at Slightly Cool and Cool level,and the result of palm is very different from forearm.