| dc.description.abstract | Six Sigma, widely accepted and utilized in various industries, is a data-driven tool not limited to quality improvement in manufacturing but also applicable in service sectors and healthcare industry. This study examines the application of Six Sigma in enhancing the product audit sampling process at Company G, a domestic manufacturer specializing in small and medium-sized panels primarily used in automotive, medical, and industrial control applications. To comply with the automotive IATF 16949:2016 standards, Company G conducts biannual product audits to evaluate the quality of automotive panels from the customer′s perspective, aiming for risk management and identifying opportunities for continuous improvement. Despite conducting these audits twice a year, the audited product types over the years have covered less than half of the annual production. Enhancing the implementation of product audits has become a key focus for Company G.
To enhance the implementation of product audits at G Company, this study utilized the Six Sigma DMAIC methodology. It systematically evaluated potential variables contributing to poor implementation through measurement and assessment, and collected relevant data for root cause analysis. Finally, standardization and personnel training were employed to achieve control and maintenance of outcomes.
The research findings demonstrate that the DMAIC approach effectively assists project team members in focusing on improvement directions, particularly in refining sampling methods to strengthen reliability aspects. Following adjustments to the sampling approach, the coverage rate of audit plan toward automotive models produced in first half of 2024 was successfully increased to 100%, with a 5% improvement in audit coverage. Moreover, the sampling quantity for unfinished audit models increased by up to 30%. Continued implementation of these strategies into the latter half of the year is anticipated to result in significant improvements. In conclusion, the study also elucidated potential future research directions to provide a basis for continuous improvement efforts within the team. | en_US |