| Summary: | 碩士 === 國立清華大學 === 工業工程與工程管理學系 === 90 === Ergonomic Evaluation and Improvement of Lower Extremities Fatigue and Plantar Pressure
Abstract
In semi-conductor fabrication, operators had a lot of workload in their shank and foot because of long-term standing and frequency handling operation. As a result, for a long term, operators in fabrication felt uncomfortable in their shank, ankle, and foot. Thus, this research proposed a serial studies on problems of uncomfortable lower extremities, and separated all process in two parts. Firstly, proposed investigation with questionnaire, and it could confirm what work sections that have the most serious problems and its causes through such investigation. Besides that, the work sampling study would be proposed in the next in fabrication. That could help to know well how much time do they spent and how many steps in all kinds of work types in their whole day working. An experiment was conducted to compare different cleanroom shoes and insoles with EMG, Polar heart rate detector , Fuji pressure film and so on, and it would find out the appropriate design of cleanroom shoes to avoid or decline workload or fatigue of the lower extremities.
Research results indicated that operators should use trolley as possible as they could to move wafer, and it would be better to provide a short break for they with more chairs if possible. Statistical results also indicated that cleanroom shoes and its insole were critical factors. According to experimental results, one of experimental cleanroom shoes had higher performance than the others, so its design concept would be recommended. About insole design, there was a lot of loading on heel considered with long-term standing and walking, so it would be recommended to add absorbing design like running shoes. To increase foot comfort, the arch support design of cleanroom shoes would be a great idea.
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