家具搁板许用弯曲程度视觉感知评价

为了提高家具产品的质量，提供家具搁板许用弯曲程度评判依据，通过视觉感知的实验方法，按照“无变形”“轻微变形”“严重变形”3个等级的评价指标，设定5种长度的搁板，每种长度的搁板设定12种弯曲变形条件，237名受试者对搁板进行变形情况判定，以探讨搁板弯曲程度超出受试者心理接受范围的临界点。结果表明:1）随着搁板长度的增加，感知到搁板变形的人数比例也随之增加；2）当搁板弯曲程度在3.0‰~4.0‰时，超过90%受试者认为搁板有轻微变形，而当搁板弯曲程度超过4.0‰时，受试者中认为搁板发生严重变形的比例逐渐增加；3）可将3.0‰、4.0‰分别作为搁板许用弯曲程度的一级指标和二级指标。研究结果可为相关标准的修订提供参考依据。

Visual Perception Evaluation of Allowable Bending Degree of Furniture Shelf

In order to improve the quality of furniture products,to provide a basis for judging the allowable bending degree of furniture shelves,this research used the method of visual perception experiment.According to the three-level evaluation index of “no deformation”,“slight deformation” and “severe deformation”,5 types of shelf lengths and 12 types of bending deformation conditions for each length of shelf were set.The critical point was explored where the degree of shelf bending exceeded the psychological acceptance of the subjects.The results were as follows.1) As the length of the shelf increased,the number of subjects who perceive deformation of the shelf increased.2) When the bending degree ranged from 3.0‰ to 4.0‰,90% of the subjects realized the minor deformation,when it was over 4.0‰,the proportion of the subjects who thought the occurrence of the major deformation increased.3) 3.0‰ and 4.0‰ could be used as the primary and secondary values of the allowable bending degree of the shelf,respectively.The results of this study can provide a reference for the revision of related standards.