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The influence of measuring resolution on the subsequent roughness parameters of sanded wood surfaces

Einfluss der Messauflösung auf die ermittelten Rauheitsparameter geschliffener Holzoberflächen

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Abstract

No recommendation was found in the literature with regard to which measuring resolution should be used when measuring wood surfaces and requirements in the general standard ISO 3274 (1996) appear too stringent. Due to its variability, wood requires longer evaluation length than recommended by ISO 4288 (1996) and combined with a high resolution will increase the matrix of data and so the time for scanning and data processing. A study was conducted on roughness profiles from sanded surfaces of oak, beech and spruce measured at different resolutions to see which is the lowest resolution that still allows accurate evaluation of the roughness parameters in real time. The effect of decreasing the resolution on roughness parameters was examined as compared with a resolution of 1 μm, which was taken as a reference. Results showed that a measuring resolution of 5 μm seems reliable for all species sanded with common grit sizes.

Zusammenfassung

In der Literatur gibt es keine Empfehlung, welche Messauflösung bei der Messung von Holzoberflächen verwendet werden soll. Die in der Norm ISO 3274 (1996) angegebenen Anforderungen erscheinen zu streng. Für Holz werden aufgrund seiner Variabilität längere Messstrecken benötigt als in ISO 4288 (1996) angegeben sind. Zusammen mit einer hohen Auflösung erhöht sich damit die Datenmatrix und somit die Zeit zum Scannen und zur Datenverarbeitung. Untersucht wurden Rauheitsprofile geschliffener Oberflächen aus Eichenholz, Buchenholz und Fichtenholz mit verschiedenen Messauflösungen. Dabei sollte die niedrigste Auflösung bestimmt werden, mit der eine genaue Bestimmung der Rauheitsparameter in Echtzeit noch möglich ist. Der Einfluss abnehmender Auflösung auf die Rauheitsparameter wurde im Vergleich zu einem Referenzwert von 1 μm untersucht. Die Ergebnisse zeigten, dass eine Messauflösung von 5 μm für alle Holzarten, die mit üblicher Körnung geschliffen werden, geeignet ist.

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Authors and Affiliations

  1. Faculty of Wood Engineering, Transilvania University of Brasov, Colina Universitatii nr.1, Brasov, 500068, Romania

    L. Gurau

  2. Trada Technology, Chiltern House, Stocking Lane, Hughenden Valley, High Wycombe, Buckinghamshire, HP14 4ND, UK

    H. Mansfield-Williams

  3. École Superiéure du Bois, Rue Christian Pauc, BP 10605, 44306, Nantes, Cedex 3, France

    M. Irle

Authors
  1. L. Gurau
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  2. H. Mansfield-Williams
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  3. M. Irle
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Correspondence to L. Gurau.

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Gurau, L., Mansfield-Williams, H. & Irle, M. The influence of measuring resolution on the subsequent roughness parameters of sanded wood surfaces. Eur. J. Wood Prod. 71, 5–11 (2013). https://doi.org/10.1007/s00107-012-0645-4

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  • DOI: https://doi.org/10.1007/s00107-012-0645-4

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