Application of design of experiments to a multilayer optical coating process

1994 ◽  
Author(s):  
Charles M. Egert ◽  
D. D. Schmoyer ◽  
James D. Howe
Keyword(s):  
Design Of Experiments ◽  
Coating Process ◽  
Optical Coating

On the Hardfacing Performance Optimization after Plasma Transfer Arc Experiments

2011 ◽  
Vol 189-193 ◽  
pp. 3640-3646
Author(s):  
Ming Der Jean ◽  
Ming Cheng Li ◽  
Tzu Hsuan Chien ◽  
Ching Jyi Chen
Keyword(s):  
Design Of Experiments ◽  
Response Surface ◽  
Performance Optimization ◽  
Three Dimensional ◽  
Surface Hardness ◽  
Statistical Design ◽  
Yield Enhancement ◽  
Coating Process ◽  
Hardness Model ◽  
Coating Design

The paper describes response surface methodology (RSM) based on design of experiments and analysis of variance (ANOVA) as a statistical design while developing a robust plasma transfer arc (PTA)coating process. Based on ANOVA, The relative important parameters with respect to surface at hardness values were identified in the Taguchi design, where they were further used in predictors. In addition, we applied three-dimensional graphs in RSM to develop a robust PTA response surface yielding the desired-better area of a treated layer. In this study, a quadratic polynomial with a Box-Behnken design is utilized. The results reveal that RSM provides the effective methods as compared to the traditional trial-and-error method for exploring the effects of controlled factors on response. A very good agreement was observed, as evidenced by R-squared value, 90%, between the predicted and the experimental data, and its error percent is found to be approximately 3.801% in the PTA-coating process. It is clear that RSM model demonstrated better accuracy in predicting surface hardness for PTA-coating process. Accordingly, RSM based on design of experiments was used as statistical PTA-coating design tools combined with the hardness model. Device zone optimization and yield enhancement have been demonstrated.

scholarly journals Direct in situ GDD measurement in optical coating process

2015 ◽  
Author(s):  
S. Schlichting ◽  
T. Willemsen ◽  
H. Ehlers ◽  
U. Morgner ◽  
D. Ristau
Keyword(s):  
Coating Process ◽  
Optical Coating
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