학술논문
B11 Analysis of daubing motion in the clay wall craftsman : Influence on several kinds of clay with different fermentation period on the daubing motion properties / B11 土壁職人の塗り作業における動作分析 : 発酵期間の異なる土を用いた時の動作の違いについて(技術)
Document Type
Journal Article
Author
Source
The Proceedings of Joint Symposium: Symposium on Sports Engineering, Symposium on Human Dynamics. 2007, :254
Subject
Language
Japanese
ISSN
2433-1309
Abstract
The purpose of this study is to examine the optimum fermentation period of clay by analyzing the technical properties of daubing motion among several kinds of clay. An expert wall craftsman (right-handed male, 56 years old, 28 years of work experience) and a non-expert (right-handed male, 37 years old, 6 years of work experience) daubed on the wall using 4 kinds of clay with different fermentation period (1-day, 1-, 2-, 3-week). The shape-maintenance property of clay was evaluated by slump test. The motion of daubing was measured using a three-dimensional motion analysis system. The slump value under 1- and 2-week clay condition was higher than 1-day and 3-week. Under 1-day clay condition, speed and acceleration of the right hand (vertical direction) were lower than other conditions. Moreover, daubing motion of the expert was hardly influenced on clay condition compared with the non-expert. These results suggest that the optimum fermentation period of clay is 1 or 2 weeks.