• Proceedings of the Korean Society for Quality Management Conference
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• 2010.04a
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• pp.454-461
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• 2010

Six sigma is a business management strategy and is used to improve the quality of the products and processes in many organizations. However traditional six sigma methodology, namely DMAIC, is not suitable for developing products. This paper investigates DFSS methodologies and presents a DFSS methodology for order based industry. Specifically, we suggest a customized DMADV method for order based industry and present a case study for developing a configuration optimization of the flying simulators.

• Journal of Applied Reliability
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• v.11 no.1
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• pp.59-81
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• 2011

Six Sigma has been disseminated into a variety of areas. It is believed that a stepwise understanding of Six Sigma's DMAIC is required for successes of unit projects. Meanwhile, infra-structure factors, such as leadership, organization, personnel management, educational system, etc., are also important to safely implant the Six Sigma into the whole enterprise and to thoroughly create the culture of innovation and enterprise. Careful analysis of those elements makes it possible to draw common connection between Project Management and the Six Sigma. This study drives the success elements for the successful adoption of the Six Sigma in the Korea Western Power Co., Ltd., of which management was evaluated as one of the tops based on the results of 2007 Management Innovation Assessment and arranges the similarity of like this factor and Enterprise Project Management. The results of this study are expected to provide a useful guideline for the adoption of the Six Sigma in whole company level.

• Journal of Korean Society for Quality Management
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• v.34 no.1
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• pp.1-12
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• 2006

This paper presents a six sigma project for improving gate painting quality in a medium-sized automotive part company. The project follows a disciplined process of five macro phases: Define, Measure, Analyze, Improve, and Control. A CTQ(critical to quality) is determined based on COPQ(cost of poor quality) analysis, and a process map is utilized for identifying process input variables. Three KPIV s(key process input variable) are selected; Painting Temperature, Painting Quantity, and Painting Viscosity, and DOE(design of experiments) is utilized for finding the optimal process conditions for three KPIVs. MINITAB software is used for data analyses and DOE. The sigma level of defects rate has improved from 2.93 to 3.66.

• Journal of Korean Society for Quality Management
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• v.37 no.2
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• pp.68-77
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• 2009

There are many quality control(QC) tools useful for solving quality problems. In this paper, QC 7 tools, new QC 7 tools, and other quality tools are first compared with respect to their frequency of use. We suggest an integrated problem-solving procedure to systematically deal with various quality problems. For each step a streamlined flow chart is presented to help the practitioners to adopt relevant tools depending on certain situations they face. The procedure will help quality practitioners solve field quality problems.

• Journal of Korean Society for Quality Management
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• v.33 no.1
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• pp.32-41
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• 2005

This paper presents a six sigma application case study for an automobile steering wheel manufacturing process using rolled throughput yield improvement activity. Hidden factory and first pass yield concept is introduced and a DMAIC procedure is implemented to maximize the first pass yield. The result of the six sigma project amounts to the reduction of failure cost of 1.2 billion won per year in the steering wheel manufacturing process. This paper can benefit six sigma practitioners in some ways.

• Journal of Korean Society for Quality Management
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• v.38 no.2
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• pp.180-189
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• 2010

For the success of total six sigma innovation, it is necessary to improve the suppliers' quality in the supply chain. This paper presents the deployment and support system of six sigma innovation for supply chain quality improvement, with the application to an aerospace production company. The process of project selection, project implementation, financial effect verification, benefit sharing is presented. This paper will benefit the companies which are going to enhance all the companies in the supply chain via six sigma activities.

• Proceedings of the KAIS Fall Conference
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• 2011.05a
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• pp.347-350
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• 2011

본 논문에서는 습식식각 설비의 Process 동작 간에 발생되는 설비의 비 가동 시간을 최소화하여 Throughput을 향상시키기 위하여 Monitoring 한 결과 Recipe 변경, 액 교환 발생, Tact 변경 등의 공정간 조건에 따라 대기시간이 발생(생산 지연시간 발생) 하는 것을 확인 하고 이를 개선하기 위한 연구이다. 연구 방법으로, Recipe Data 적용 시점을 약액 구간 처리 완료 시점에서 후속 기판이 대기하지 않고 연속 투입을 실시, Chamber Drain과 약액 Tank 전환이 동시에 이루어지고 액 교환 동작 중 Pump Spray의 연속성을 유지하는 무정지 액 교환 Sequence 적용, Tact 적용 시점을 전 기판 배출 확인 후 실시하는 것을 약액 구간 처리 완료 후 적용의 3가지 방법을 6시그마의 DMAIC 기법을 활용하였다. 연구 결과 개선 전 비 가동 시간이 설비 대당 1일 28분 시그마 Level 3.40 이었던 것을 개선 후 설비 대당 1일 17분 시그마 Level 5.3 으로 개선됨을 확인 할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.301-303
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• 2005

프로젝트 관리의 중요성이 점차 증대되고 있는 상황에서, 프로젝트의 성패를 좌우하는 리스크와 ad hoc 문제점을 체계적으로 관리하기 위한 효과적인 기법이 요구되고 있다. 기존의 표준 프로젝트 관리 체계에서는 주로 리스크 관리를 위한 계획 위주의 프로세스가 강조되고 있다는 한계가 있었다. 본 논문에서는 표준 리스크 관리 프로세스에서 활용되는 확률 및 영향 매트릭스를 고려하여 문제점 관리를 위한 우선순위 결정 기법의 필요성을 설명하였다. 또한 6시그마 DMAIC 프로세스의 Measure 단계에서 주로 이용되는 FDM을 프로젝트의 문제점 관리에 적용하여, 여러 문제점들을 동시적으로 고려하고 체계적으로 우선순위화함으로써 프로젝트 관리 능력을 향상시키는 방안을 제시하였다.

• Proceedings of the Safety Management and Science Conference
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• 2012.04a
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• pp.623-638
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• 2012

Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical study on the implementation of DMAIC procedures for internet media portal service company.

• Journal of the Korea Safety Management & Science
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• v.10 no.4
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• pp.219-227
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• 2008

Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical study on the implementation of DMAIC procedures for internet media portal service company.