- 學位論文
An Enhanced Process Improvement Roadmap in Six Sigma Methodology
An Enhanced Process Improvement Roadmap in Six Sigma Methodology
摘要
There are numerous different approaches available nowadays to improve the performance of a process and ensure on time delivery. The Six Sigma offers a unique roadmap that is widely used in industries in order to improve the process and thereby reduce the number of defects. The most commonly used roadmap for existing process improvement in Six Sigma is the DMAIC (Define-Measure-Analyze-Improve-Control) improvement roadmap which is a five-step roadmap that utilizes different Six Sigma tools to generate ideas, collect and measure data, analyze and come up with improvement plans to improve the process under study. While analyzing the DMAIC roadmap and its application to the case studies, some deficiencies were found. Various case studies application of the DMAIC roadmap illustrated issues in reaching the Six Sigma goal (Cpk=2). In order to solve the deficiencies of the original DMAIC roadmap, the present study seeks to enhance the original improvement roadmap by some statistical tools with emphases on the process capability (Cpk) to better insure improvement. Thus, this study is proposing an enhanced improvement roadmap that seeks to achieve the required Six Sigma goal. A case study is conducted to demonstrate the feasibility and effectiveness of the proposed improvement roadmap. The result of this study will be a proposal of the enhanced improvement roadmap in Six Sigma methodology, along with the benefits deliverable from the application of the methodology.
並列摘要
There are numerous different approaches available nowadays to improve the performance of a process and ensure on time delivery. The Six Sigma offers a unique roadmap that is widely used in industries in order to improve the process and thereby reduce the number of defects. The most commonly used roadmap for existing process improvement in Six Sigma is the DMAIC (Define-Measure-Analyze-Improve-Control) improvement roadmap which is a five-step roadmap that utilizes different Six Sigma tools to generate ideas, collect and measure data, analyze and come up with improvement plans to improve the process under study. While analyzing the DMAIC roadmap and its application to the case studies, some deficiencies were found. Various case studies application of the DMAIC roadmap illustrated issues in reaching the Six Sigma goal (Cpk=2). In order to solve the deficiencies of the original DMAIC roadmap, the present study seeks to enhance the original improvement roadmap by some statistical tools with emphases on the process capability (Cpk) to better insure improvement. Thus, this study is proposing an enhanced improvement roadmap that seeks to achieve the required Six Sigma goal. A case study is conducted to demonstrate the feasibility and effectiveness of the proposed improvement roadmap. The result of this study will be a proposal of the enhanced improvement roadmap in Six Sigma methodology, along with the benefits deliverable from the application of the methodology.