Correlation studies between visual perception and waviness measurements for coated surfaces Online publication date: Sat, 30-Aug-2014
by Paul Henshaw; Geethashree Hemashankar; Sudhir Paul
International Journal of Quality Engineering and Technology (IJQET), Vol. 3, No. 2, 2012
Abstract: This research study investigates the factors influencing the appearance of an exterior coated automobile finish as measured by the BYK wave-scan DOI instrument. Sets of 10 to 16 painted panels of three different colours; silver, white and blue were visually evaluated by 60 or 30 panellists of various demographic characteristics, who ranked the panels individually from best to worst. The median rank for each panel was correlated to a linear combination of the measured wave-scan values for that panel. The medium ranks of silver and white painted panels exhibited strong correlations (R² = 82% and 90%, respectively) with wave-scan parameters. Even though blue was the most preferred colour among the study group, the resulting model exhibited a weak correlation (53%) between rank and the wave-scan parameters. Further studies need to be conducted to establish a scientific method to obtain an acceptable value for BYK parameters.
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