Construction of experience-based education system for car paint color mixing by extracting tacit knowledge of experts

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K03190
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 09070:Educational technology-related
• Research Institution: Osaka Sangyo University
• Principal Investigator: Takai Yuka 大阪産業大学, デザイン工学部, 講師 (90626368)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 自動車修理 / 塗装 / 調色 / 行動分析 / 眼球運動解析 / 教育システム / AR

Outline of Final Research Achievements

The purpose of this study is to develop an experiential education system that formalizes the tacit knowledge of skilled technicians in color mixing and transfers the tacit knowledge to younger technicians.
Experienced color mixers with more than 15 years of experience and unskilled color mixers with less than 2 years of experience conducted the color mixing. During the color mixing process, video was taken, eye gaze was measured, and an interview was conducted to ask the reason for the work. Work analysis was conducted from the videos. Gazing time was calculated from gaze measurements. Text mining was conducted using the interview data to clarify the tendency of frequently occurring words. Colorimetry was performed on sheets of paint after toning. From these results, it became clear that non-skilled workers were poor judges of color after painting. Therefore, an AR application was developed to develop the ability to judge the paint color of car bodies.

Free Research Field

人間工学、感性工学、教育工学

Academic Significance and Societal Importance of the Research Achievements

自動車修理調色に関する研究は世界的にも数が少なく、属人的暗黙知が形式知化されていない。本研究成果により属人的暗黙知を形式知化し教材として利用する一つのスキームを示すことができた。また、技術継承が困難な分野であるため、アプリ教材は国内外で技術継承を助ける一つの手段となる。