Framing of Design of Experiments (DOE)

Article

Brown, Richard M.; Burke, Michael I.   (1988, ASQC)   Chrysler Motors, Detroit, MI

Annual Quality Congress, Dallas TX    Vol. 42    No. 0
QICID: 3501    May 1988    pp. 684-690
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Article Abstract

This paper focuses attention on the DOE process, highlighting the planning, interpretation and implementation phases of the process. Through our experience, we have learned that barriers occur most often during these phases when doing DOE work in the real world. We refer to these phases of the process as the framing of the experiment. Framing is not discussed in detail in most textbooks even though it is very important.

The approach of this paper is to focus on the macro view of doing DOE. The paper addresses the technical, implementation, and management role in the framing process. We discuss what the DOE process is and describe the benefits for industry and individuals. The how and when of implementation are presented along with some pitfalls learned through experience. We talk about DOE as it interacts with other tools. This interaction strengthens the impact of all of the tools involved for continuous improvement. The use of DOE to improve and support communication, to reduce total cost and waste, and to improve product quality is stressed.

This paper also addressed management's role as an active element in the DOE process. The positive actions required of management before, during, and after the process are outlined. We suggest what management should know to best use that knowledge. We share what we have found to be the most effective actions management can take in areas of implementation and follow-up.

This paper includes several checklists which aid in successful framing at each stage of the process. All theory presented in this paper is supported by successful real-world experience. Management actions and policies that facilitate DOE implementation are presented.

Definitions
DOE
- is a way to efficiently plan and structure an investigatory testing program. DOE can be used to optimize a design or process so that desired results will be attained in production. DOE can also be used to investigate the basic factor relationships within a design or process.
Framing
- is a process used to assure that the proper question(s) will be addressed by the testing program, that the necessary supporting data is included, that all involved parties agree on the approach, and that the necessary management support exists.

Keywords

Automobile industry


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