Measuring Skew in Average Surface Roughness as a Function of Surface Preparation
- Stahl, Mark
- August 9, 2015.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Characterizing surface roughness is important for predicting optical performance. Better measurement of surface roughness reduces polishing time, saves money and allows the science requirements to be better defined. This study characterized statistics of average surface roughness as a function of polishing time. Average surface roughness was measured at 81 locations using a Zygo white light interferometer at regular intervals during the polishing process. Each data set was fit to a normal and Largest Extreme Value (LEV) distribution; then tested for goodness of fit. We show that the skew in the average data changes as a function of polishing time.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 20150019521.
International Society for Optics and Phononics (SPIE); 9-13 Aug. 2015; San Diego, CA; United States.
- No Copyright.
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