Browsing Center for Quality and Productivity Improvement (CQPI) by Author "Bisgaard, Soren"
Now showing items 1-13 of 13
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2k-q Experiments with Binary Response Sampling Until a Fixed Number of Defects
Bisgaard, Soren; Gertsbakh, Ilya (1997-01)In this article we will discuss the use of two-level factorial and fractional factorial experiments with binary responses (defectives/non-defectives) where the purpose is to reduce the rate of defectives. Contrary to a ... -
An Analysis of Taguchi's Method of Confirmatory Trials
Diamond, Neil; Bisgaard, Soren (1990-10)Taguchi has suggested a new method of confirmatory trials that is intended to test for possible interaction effects. The method is being promoted by many recent authors. A careful analysis of this method, however, shows ... -
A Comparison of Dispersion Effect Identification Methods for Unreplicated Two-Level Factorials
Bisgaard, Soren; Fuller, Howard T. (1995-10)Identifying factors that affect the variability of a process has become an important step in improving quality. Over the years many methods based on unreplicated two-level factorial experiments have been proposed for ... -
The Design and Analysis of 2k-p x 2q-r Inner and Outer Array Experiments
Bisgaard, Soren (1992-09)Inner and outer array designs are useful for the development of robust products. In this article we will provide a discussion of their design and analysis from a classic factorial and fractional factorial design standpoint. ... -
Designing Quality Into Products During the Design and Development Phase
Ellekjaer, Marit Risberg; Bisgaard, Soren (1996-10)To be effective, quality needs to be built-in and planned already in the product design phase. In this article, we will provide an overview of how design engineers can use statistical experimental design to develop high ... -
Five Ways Statistical Tolerancing Can Fail and What to Do About Them
Graves, Spe; Bisgaard, Soren (1997-09)In this article we explore the general non-robustness of traditional root sum of squares statistical tolerancing and describe, in particular, how it can fail. These are [1] deficiencies in the functional model, [2] lower ... -
Process Optimization: Going Beyond Taguchi Methods
Bisgaard, Soren (1991-05)This paper summarizes a speech given at the May 25, 1990 National Thermal Spray Conference in Long Beach, California. It is an expository paper which motivates the use of RSM for Product and Process Improvement and the ... -
Quality Engineering and Taguchi Methods: A Perspective
Bisgaard, Soren (1990)Robust product design and parameter design - methods to develop products that will perform well regardless of changes in uncontrollable environmental conditions or that are insensitive to component variation - are key ... -
Quality Improvement at the Design Stage- A Cyclic Incremental Approach
Bisgaard, Soren (1991-05)Quality control based on inspection and segregation is uneconomical and inefficient. To be effective, quality needs to be considered and planned at the product design stage. In this article we put what seems like detailed ... -
Quality Quandaries-Proposals: A Mechanism for Achieving Better Experiments
Bisgaard, Soren (1998-10)In this paper we outline how a simple procedure of requesting a proposal before management signs off on an experiment can dramatically improve the effectiveness of experimenters. An eleven step process is provided. -
The Role of Scientific Problem Solving and Statistics in Quality Improvement: Some Perspectives
Bisgaard, Soren (1997-04)Scientific method of observation and experimentation play a key role in quality improvement. In this article, I provide numerous examples of the use of scientific method and argue that this a vital catalyst for Total ... -
Studies in Quality Improvement: Designing Environmental Regulations
Bisgaard, Soren; Hunter, William G. (1986-02)There is a surprising similarity between what SPC provides for industries and the need for constructing sensitive, reliable standards for environmental regulations. -
Tolerancing Mechanical Assemblies Using Computer Aided Design and Experimental Design
Shin, Garrick; Graves, Spencer; Bisgaard, Soren (1997-04)Component tolerances for assembled products are often set with the help of the error transmission formula. However, this approach requires knowledge of the partial derivatives of the functional relationship between the ...