An analysis of failure-time distributions for product design optimization

An analysis of failure-time distributions for product design optimization

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Article ID: iaor201523776
Volume: 12
Issue: 6
Start Page Number: 429
End Page Number: 438
Publication Date: Nov 1996
Journal: Quality and Reliability Engineering International
Authors: ,
Keywords: statistics: distributions
Abstract:

Analysis of experimental data is often a problem facing design and manufacturing engineers. Many experiments are run for the express purpose of making a decision between manufacturing process or material alternatives. Statisticians recommend replication in experimental design; however, methods of analysing experimental data, as presented in a majority of engineering curricula, generally review only the most basic situations (checking for a statistically significant difference between the means or variances of two samples, for example). If means and variances change with time, group comparisons may require more sophisticated analyses. This paper presents one method that takes into account shifts in group means and variances over time. Resistance temperature sensor drift data generated from six different design configurations are used as an illustration. This procedure takes into account all drift path information from multiple sensors in multiple groups.

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