ANISOTROPY OF SURFACE ROUGHNESS - Centrum Textil

Table I. Surface moments and anisotropy of samplesPattern Weave m 2,0 m 1,1 m 0,2 AN-anisotropyA- Krull surfaceloops0.767066 0.06126 0.150587 0.2714B - Twill 0.0020481 -0.0250585 0.229335 1C – PlainLow sett1.0306 -0.878057 0.73729 1.A B CFig. 1. Profile slope variance angular dependence (crosses) and predicted slope variance(solid line) for samples from table I.The results of computation are in good agreement with visual roughness appearance.6. CONCLUSIONThe proposed technique is capable to estimate roughness characteristics of anisotropicsurfaces typical for textile structures. Beside the anisotropy measure AN the direction θpandvalues of m 2max will be probably necessary for deeper description of textiles surface roughnessThis work was supported by the research project of Czech Ministry of Education LN00B09010. REFERENCES[1] Militký J, Bajzík.V: Description of thickness variation by fractal dimension, Proc. Conf.STRUTEX 2000, Liberec December (in Czech) (2000)[2] ISO 4287: Geometrical product specification, GPS-surface texture, profile method - terms,definitions, and surface texture parameters, Beuth Verlag, Berlin 1997[3] Anonym: Operation Manual, Shirley(1999)[4] Kawabata S.:Text. Mach. Soc. Japan (1980)[5] Meloun M., Militky J., Forina M.: Chemometrics for Analytic Chemistry vol. I, StatisticalData Analysis, Ellis Horwood, Chichester (1992)[6] Militký J., Bajzík V.: Characterization of textiles surface roughness, Proc. 7 th Int. AsianTextile Conference, Hong Kong August 2001[7] Li Ch. G. et. all: Wear 237,211, (2000)[8] Nayak P. R.: Trans. ASME : J. Lub. Tech. 93F, 398 (1971)[9] Thomas T. R., Roson B. G., Amini N.: Wear 232, 41 (1999)[10] Longuet-Higgins M.S.: Phil. Trans. R. Soc. London, A 250, 157, (1957)[11] Militký J.: work to be published (conference in Dubrovnik), (October 2004)