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Effect of material property, surface temperature and contact duration on the thermal sensation when contacting shell materials of electronic devices.
Applied Ergonomics ( IF 3.2 ) Pub Date : 2020-04-08 , DOI: 10.1016/j.apergo.2020.103104
Ka-Po Maggie Tang 1 , Yuen-Shing Wu 1 , Jin-Tu Fan 2
Affiliation  

Heat generated in electronic devices is generally unevenly distributed across the casing. Contacting the hot areas may cause thermal discomfort and possibly skin burn. This study aims at better understanding the interrelationship between the thermal sensation, material properties and surface temperature for enhancing the user experience of electronic devices. A Thermal Simulation System was developed in this study to precisely control the surface temperature of shell materials to simulate various end-use conditions. Seventeen participants were asked to contact the plates with their fingers and rate their thermal sensation using the magnitude estimation approach. Results showed that thermal sensation magnitude and plate temperature followed a power function. The differences in sensation magnitude can be attributed to the thermal inertias of different materials. The findings suggested that laminated plate was generally perceived cooler when heated. Given that the surface temperature of plate is higher than skin, the thermal sensation magnitude increases with contact duration.

中文翻译:

接触电子设备外壳材料时,材料性能,表面温度和接触时间对热感的影响。

电子设备中产生的热量通常会不均匀地分布在整个外壳上。接触高温区域可能会导致热不适并可能灼伤皮肤。这项研究旨在更好地理解热感,材料特性和表面温度之间的相互关系,以增强电子设备的用户体验。在这项研究中开发了一个热模拟系统,以精确控制壳材料的表面温度,以模拟各种最终使用条件。要求17名参与者用手指接触板并使用幅度估计方法对板的热感进行评分。结果表明,热感强度和板温度遵循幂函数。感觉大小的差异可归因于不同材料的热惯性。该发现表明,层压板在加热时通常被认为较冷。假定板的表面温度高于皮肤,则热感强度随接触持续时间而增加。
更新日期:2020-04-08
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