Suppose the accuracy of a compounder was described as ±5% or ±10%. What does this mean to you? In many ways, this description is lacking. First, what percentage of dispenses would you expect to be in this range? Is it 100%? Is it 50%? Does this statement describe the typical performance or a guaranteed level […]
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Dr. Wayne A. Taylor When solving tolerancing problems, one must choose between worst-case tolerancing and statistical tolerancing. Both of these methods have their pros and cons. If worst-case tolerancing is used, all tolerances must be specified as worst-case tolerances. If statistical tolerancing is used, all tolerances must be specified as statistical tolerances. In reality, the
Presented at 1996 Fall Technical ConferenceDr. Wayne A. Taylor, Taylor Enterprises, Inc. (www.variation.com) Robustness is a key strategy for achieving high quality – low cost products and processes. Three different approaches to robust design are commonly used: the inner/outer array approach advocated by Taguchi, the dual response approach using response surfaces and the tolerance analysis
Design offers the first and best opportunity for reducing variation. To illustrate the strategies and tools required, consider the task of designing a new pump. Suppose we are faced with the task of designing a pump capable of delivering solution at a constant rate of 10 ml/min. Customer usage requires that the flow rate remains
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