EVALUATION OF WOOD SURFACE ROUGHNESS BY CONFOCAL MICROSCOPY

Magoss, Endre and Rozs, Richárd and Tatai, Sándor (2022) EVALUATION OF WOOD SURFACE ROUGHNESS BY CONFOCAL MICROSCOPY. WOOD RESEARCH, 67 (6). pp. 919-928. ISSN 1336-4561

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Abstract

The main aim of this study is to define the usability of the confocal scanning optical microscope (CSOM) to evaluate the wood surface roughness. Therefore, systematic investigation was carried out to define the influences of CSOM on the acquisition of 2D surface roughness parameters. Mahr Perthometer was applied to get reference data to estimatetheapplicability of the CSOM. Because wood roughness parameters measured with stylus and optical methods are not always comparable a calibration method was conducted on a metal calibration etalon. After the calibration process, the roughness profiles taken with the optical and stylus units were much closer to each other and only the optical Rpkparameter was definitely higher due to artificial peaks generated by the optical system. In order to eliminate this measuringfailure, the morphological filter option of the optical apparatus may be activated. Thesurface roughness parameters were measured on planed Scotch pine samples. The planed surface plains were produced with 0.2 mm parallel offset to investigate thestructural influence of the single cutting plains. The obtained results show that the average values for Ra, Rq, Rz, Rk, and Rvkare close to each other for both measuring systems, only theoptically measured Rpkvalues must be corrected. The standard deviations, however, are systematically slightly higher for optical system. This may be explained by the higher resolution of the optical system giving more fine profile details. The earlier developed and introduced dimensionless quantities, such as Abbott ratio, are also fully comparable for both systems provided that the optically measured Rpkvalues are also correct.

Tudományterület / tudományág

engineering and technology > material sciences and technologies
engineering and technology > wood industry

Faculty

Not relevant

Institution

Soproni Egyetem

Item Type:	Article
SWORD Depositor:	Teszt Sword
Depositing User:	Csaba Horváth
Identification Number:	MTMT:33566517
Date Deposited:	24 Feb 2023 10:25
Last Modified:	24 Feb 2023 10:25
URI:	http://publicatio.uni-sopron.hu/id/eprint/2597

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