A Vector Model Analysis of Individual Differences in Sensory Measurement of Surface Roughness

Abstract

In order to investigate the structure of individual differences in sensory measurement of surface roughness, paired-comparisons data of judged roughness on metal surfaces were subjected to vector model analysis. Both of the derived most parsimonious configurations of test pieces for the data from tactual and visual experiments were two-dimensional and well-predicted by the physical variables of root mean square deviations in profile (Rrms) and mean spacing of profile irregularities (pitch). Individual differences were observed in the wide variety of weighted combinations of the two physical variables. The effects of training of inspectors on their structures of sensory measurement were clarified in the observed group differences. On the basis of these findings, some guidelines for instructing and training inspectors were discussed.

Get full access to this article

View all access options for this article.

References

Carroll, J. D. Individual differences and multidimensional scaling. In R. N. Shepard , A. K. Romney , and S. B. Nerlove (Eds.) Multidimensional scalillg. Vol. 1. Theory. New York: Seminar Press, 1972.

Mishima, I. and Nakano, K. Sensitivity of sensory test on surface roughness. Journal of the Japan Society of Precision Engineering, 1976, 42, 1102–1108.

Mishima, I. , Nakano, K. , Noro, K. , Inukai, Y. , and Saito, S. Individual differences in percent correct observations of subjective surface roughness. The Japanese Journal of Ergonomics, 1977, 13, 129–136.

Nara, J. (The chief of a research team for the methodology of surface roughness) Sensory test of surface roughness. Proceedings of the autumn meeting of the Japan Society of Precision Engineering, 1972, 91.

Noro, K. , Inukai, Y. , and Saito, S. An analysis of individual differences on sensory measurement of roughness. The Japanese Journal of Ergonomics, 1976, 42, 227–235.

Saito, S. Multidimensional scaling on the measurement of tactual impression of surface roughness. Journal of the Japan Society of Precision Engineering, 1976, 42, 1114–1120.

Tucker, L. Intra-individual and inter-individual multidimensionality In H. Gulliksen , and S. Messick , (Eds.) Psychological scaling: Theory and applications. New York: Wiley, 1960.