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Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints

In this study, the surface parameters wettability, roughness, and adhesive penetration, which are important for wood bonding, were investigated and evaluated utilizing non-destructive methods after different mechanical processing. For this purpose, beech and birch finger joints were prepared with di...

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Autores principales: Stolze, Hannes, Gurnik, Michael, Koddenberg, Tim, Kröger, Jonas, Köhler, Robert, Viöl, Wolfgang, Militz, Holger
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146132/
https://www.ncbi.nlm.nih.gov/pubmed/35632269
http://dx.doi.org/10.3390/s22103855
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author Stolze, Hannes
Gurnik, Michael
Koddenberg, Tim
Kröger, Jonas
Köhler, Robert
Viöl, Wolfgang
Militz, Holger
author_facet Stolze, Hannes
Gurnik, Michael
Koddenberg, Tim
Kröger, Jonas
Köhler, Robert
Viöl, Wolfgang
Militz, Holger
author_sort Stolze, Hannes
collection PubMed
description In this study, the surface parameters wettability, roughness, and adhesive penetration, which are important for wood bonding, were investigated and evaluated utilizing non-destructive methods after different mechanical processing. For this purpose, beech and birch finger joints were prepared with different cutting combinations (three cutters with different sharpness levels and two feed rates) in an industrial process. Effects and interactions on the surface parameters resulting from the different cutting combinations were evaluated using three Full Factorial Designs. The various cutting parameters had a predominantly significant influence on the surface parameters. The effects and identified interactions highlight the complexity of the cutting surface and the importance of wood bonding. In this respect, a new finding is that with sharper cutters, higher contact angles of the adhesives occur. The methods (contact angle measurement, laser scanning microscopy, and brightfield microscopy) used were well suited to make effects visible and quantifiable, which can be of interest for the quality control of the wood processing industry. The results can help to better understand and evaluate the design of wood surfaces via machining and the bonding of hardwoods. Possibly the results can contribute to further standardizing the production of load-bearing hardwood finger joints and making them more efficient.
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spelling pubmed-91461322022-05-29 Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints Stolze, Hannes Gurnik, Michael Koddenberg, Tim Kröger, Jonas Köhler, Robert Viöl, Wolfgang Militz, Holger Sensors (Basel) Article In this study, the surface parameters wettability, roughness, and adhesive penetration, which are important for wood bonding, were investigated and evaluated utilizing non-destructive methods after different mechanical processing. For this purpose, beech and birch finger joints were prepared with different cutting combinations (three cutters with different sharpness levels and two feed rates) in an industrial process. Effects and interactions on the surface parameters resulting from the different cutting combinations were evaluated using three Full Factorial Designs. The various cutting parameters had a predominantly significant influence on the surface parameters. The effects and identified interactions highlight the complexity of the cutting surface and the importance of wood bonding. In this respect, a new finding is that with sharper cutters, higher contact angles of the adhesives occur. The methods (contact angle measurement, laser scanning microscopy, and brightfield microscopy) used were well suited to make effects visible and quantifiable, which can be of interest for the quality control of the wood processing industry. The results can help to better understand and evaluate the design of wood surfaces via machining and the bonding of hardwoods. Possibly the results can contribute to further standardizing the production of load-bearing hardwood finger joints and making them more efficient. MDPI 2022-05-19 /pmc/articles/PMC9146132/ /pubmed/35632269 http://dx.doi.org/10.3390/s22103855 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Stolze, Hannes
Gurnik, Michael
Koddenberg, Tim
Kröger, Jonas
Köhler, Robert
Viöl, Wolfgang
Militz, Holger
Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title_full Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title_fullStr Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title_full_unstemmed Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title_short Non-Destructive Evaluation of the Cutting Surface of Hardwood Finger Joints
title_sort non-destructive evaluation of the cutting surface of hardwood finger joints
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146132/
https://www.ncbi.nlm.nih.gov/pubmed/35632269
http://dx.doi.org/10.3390/s22103855
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