Design of Experiments for Engineers and Scientists by Antony Jiju

Design of Experiments for Engineers and Scientists by Antony Jiju

Author:Antony, Jiju
Language: eng
Format: epub
ISBN: 9780080994192
Publisher: Elsevier Science
Published: 2014-02-23T16:00:00+00:00


Also,

The objective of the experiment was to determine which factors influence the yield (%) and which settings would provide us with the highest yield. In order to determine the most significant effects (main or interaction effects), it was decided to use a Pareto plot (Figure 7.12). Figure 7.12 reveals that main effects B=exposure time, A=aperture setting and C=develop time appeared to be statistically significant at 5% significance level. Moreover, it was found that there is a strong interaction between aperture setting and exposure time. Figure 7.13 shows that the effect of exposure time at different levels of aperture setting is not the same. In addition, the interaction graph clearly indicates that yield is maximum when exposure time is kept at a high level (40 min) and aperture setting was also kept at a high level (high).



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