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    Defect reduction by dmaic method: a case study of a jewelry manufacturer 

    Luederat Chartmongkoljaroen; Radha Sirianukul; Piyawan Puttibarncharoensri; Wasana Marksin (Assumption University Press, 2019)

    This research is a case study of a jewelry manufacturerwith the purposes to solve a problem of the defect rate of resins in the modeling department. DMAIC methodology (Define, Measure, Analyze, Improve, and Control) was applied in the research to analyze and identify root causes of the defective resins, improve modeling processes,and reduce a defect rate of resins.Data were collected by using the data collection forms, observations, interviews, and historical data. As a result, there are eight root causes of the defects divided into four categories ...