All entries for February 2008

February 18, 2008

Six Sigma—training, people

Training is a important factor in the successful implementation of six sigma projects.The belt system must be applied throughout the company starting with top management and should be cascaded down through the organizational hierarchy. The curriculum in the belt system varies from organization to organization and from consultant to consultant.

Although these people are the ones who receive a proper training, this does not mean that they are the only individuals within the organization in charge of six sigma. They are agents of change who should spread the six sigma philosophy throughout the company. Operators who know their process better than anybody should also be familiarised with it since they are the main contributors of the quality in products and services.

The belt system offers a wide knowledge in six sigma initiative, it would not reinforce all the new knowledge and skills needed to sustain six sigma. They will:

Linking six sigma to customers

Linking six sigma to human resources

Linking six sigma to suppliers

Understanding tools and techniques within six sigma

February 12, 2008

Six Sigma

Look at the jounral I summarize that there are four aspects of the six sigma strategy that are not accentuated in other quality management and improvement methodologies of the past.

Firstly, six sigma places a clear focus on achieving bottom-line results in monetary terms. No six sigma project is approved unless the project’s returnon- investment is clearly identified and understood by the team. The bottom-line impact of a project depends heavily on the type of project (Black Belt, Green Belt or White Belt).

Secondly, six sigma has been very successful in integrating the human (teamwork, culture change, motivation, customer focus, etc.) and process (process control, process monitoring, process analysis, process improvement, etc.) aspects of improvement.

The third key characteristic of six sigma is that it integrates both statistical and non-statistical tools of quality improvement in a sequential manner within a powerful

problem-solving framework (Define-Measure-Analyse- Improve-Control).

The fourth characteristic of six sigma is that it creates a powerful team infrastructure (Project champions, Master Black Belts, Black Belts, Green Belts and Yellow Belts) for implementation of projects.

February 09, 2008

Six Sigma—Improve design cycle

Improved design cycle


This figure shows the basic improved design cycle that provides the necessary rigour for DFSS. To deal with the failures in use of both product and service it is important to learn from the past and to learn from experience in use through testing. To deal with the failures of inappropriate strategy, lack of favour and poor performance, it is important to learn through exposing the design to business and customer requirement early on in the cycle. By shifting the starting point to first learning by example, then testing a concept against business and customer needs, evaluating the design against quality metrics, and then piloting prototypes, by the time the design is launched commercially it will be guaranteed a greater degree of success. Success in design comes from a rigorous approach, a customer focus, and in ensuring that hindsight becomes foresight:

·      Learn by example from both the present and the past

·      Learn by exposure to business scrutiny

·      Learn by examination against customer requirements;

·      Learn by experience in test and prototype

February 08, 2008

Six Sigma framework

The practice of six sigma takes the form of projects conducted in phases generally referred to recognized as define- measure - analyze- improve- control (DMAIC0. Afrer the define phase of a project, key process characteristics are identifiedm studied and benchmarked in the measure and analyze phases. Then in the improve phase a process in changed to gie a better or optimized performance. Finally, the control phase then ensures that the rresulting gains are sustained eond the competion of the project.

The use of statistical thinking is a common thread through these phases, with measured data prociding an indispensable proxy for realities and facts. Thus, Harry and Schroeder presented Six Sigma as a disciplined method of using extremely rigorous data gathering and statistical analysis to pinpoint sources of erroes and ways of eliminating them. The levels of competence of personnel executing the projects ar eclassified orr laeld as Master Black belts, Black Belts, Green Belts and so on

February 07, 2008

Reliability and Six Sigma

Development of any product in volves designing processes that can result in the desired product. Successful development of  a product depends on the effectiveness of the inderlying processes. Naturally, process variability is a concern for any product development team, since it affects the reliability and quality of the product. To manage the processes, we have to measure it, especially the variations and the incertainties associated with them. It have close relationship between the reliaility and six sigma.

we can use proabilistic models to analysis such as probability distribution, sigma quality level, failure function and so on.

February 01, 2008

Last lecture day of Six Sigma

Today is the last lecture of six- sigma. Time always go quickly. This two lecture is Roger Williams took, he talked about the Taguchi Experiment and methods, but I think most of those knowledge was talked by Graeme in the before four days, so it is not acctually very fresh content, but it is a good way to sum up the content of last four days. I recalled the process of that two experiments and how to use the methods to solve the problem. Very nice.

Actually I really like the lecture of this week, it is funny and interesting. From the two experiment, I know how to use the methods to improve the quality in practise. It is more useful than read in the book but not do anything.

I really need pack up the knowledge of this two week and think over it. Hope I can using in my project or the future work.

February 2008

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