Chau Kam-Hong, Tang Ka-Po Maggie, Kan Chi-Wai
Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Hong Kong.
R Soc Open Sci. 2018 Aug 15;5(8):180798. doi: 10.1098/rsos.180798. eCollection 2018 Aug.
Wet perception involves a complex neurobiological mechanism and it is a crucial factor affecting the wear comfort in daily life. A subjective wet perception assessment was conducted against wetted fabrics. The assessment method was set to demonstrate the sensation felt by the wearer in recovery period after light activities, and assumes that there is no further sweat secretion. Twenty participants participated in the assessment. Participants were presented with fabrics dried with different duration for simulating garments dry during recovery period. A new fabric driver was built to simulate body movements during wear. The driver drove specimens and reference fabrics on participants' forearms. The two-arm configuration of the fabric driver helps to enhance the reliability of assessment results. The participants were asked to give wetness rating on each sample in ratio scale. We conclude that log of subjective wetness rating has linear relationship with drying time of fabric (DToF) and amount of water in fabric. A novel wetness factor (WF) is developed to quantify the effects of wet perception and exposure time induced by a drying fabric. WF is the area under curve of wetness rating against DToF. A smaller WF indicates that a user suffers less from wet sensation.
湿感涉及复杂的神经生物学机制，是影响日常生活中穿着舒适度的关键因素。针对湿织物进行了主观湿感评估。评估方法旨在展示穿着者在轻度活动后的恢复期所感受到的感觉，并假设不再有汗液分泌。20名参与者参与了评估。向参与者展示了不同干燥时长的织物，以模拟恢复期衣物的干燥情况。构建了一种新型织物驱动装置来模拟穿着过程中的身体运动。该驱动装置在参与者的前臂上驱动试样和参考织物。织物驱动装置的双臂配置有助于提高评估结果的可靠性。要求参与者以比率量表对每个样品给出湿度评级。我们得出结论，主观湿度评级的对数与织物干燥时间（DToF）和织物中的水量呈线性关系。开发了一种新型湿度因子（WF）来量化干燥织物引起的湿感和暴露时间的影响。WF是湿度评级相对于DToF的曲线下面积。较小的WF表明使用者遭受的湿感较少。
