Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials
The article concerns the quality issues in wood industry, and especially the advisability of removing defects from veneers. The research purpose of the study was to analyse the influence of the layered structure of plywood base layer made of low-quality wood on selected mechanical properties of floo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
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| Series: | Forests |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1999-4907/12/8/1017 |
| _version_ | 1797523823936929792 |
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| author | Izabela Burawska-Kupniewska Paweł Mycka Piotr Beer |
| author_facet | Izabela Burawska-Kupniewska Paweł Mycka Piotr Beer |
| author_sort | Izabela Burawska-Kupniewska |
| collection | DOAJ |
| description | The article concerns the quality issues in wood industry, and especially the advisability of removing defects from veneers. The research purpose of the study was to analyse the influence of the layered structure of plywood base layer made of low-quality wood on selected mechanical properties of floor composites. The utilitarian purpose is to analyse the possibility of producing floors from low-quality materials reducing waste. Four quality classes of Scots pine veneers (<i>Pinus sylvestris</i> L.) were taken into account: A, B, C, D, from the highest class-A without defects to the lowest class-D characterized by a lot of knots (including broken and falling out ones) and cracks. The base layer of the floors was made of these wood quality classes. The value of the modulus of elasticity in elastic deformation, modulus of elasticity in the dynamic and fatigue tests, stiffness and static bending strength were investigated. The test results showed that, as expected, the samples made of class A had the highest values of the measured parameters (static bending strength, static and dynamic modulus of elasticity, and stiffness). However, the values of the tested parameters for the remaining classes B, C, and D did not significantly differ. It was concluded from the research that the change of the plywood base layer conditions regarding the quality of veneers does not significantly affect the physical and mechanical properties of composites. Hence, it is possible to use wood of lower quality classes for production without verification of which class they belong to, which will significantly reduce the production costs. |
| first_indexed | 2024-03-10T08:48:34Z |
| format | Article |
| id | doaj.art-3444ca6021e54707b1dc3fdc0e4e5c5b |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T08:48:34Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-3444ca6021e54707b1dc3fdc0e4e5c5b2023-11-22T07:42:18ZengMDPI AGForests1999-49072021-07-01128101710.3390/f12081017Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring MaterialsIzabela Burawska-Kupniewska0Paweł Mycka1Piotr Beer2Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 166, 02-787 Warsaw, PolandInstitute of Wood Sciences and Furniture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 166, 02-787 Warsaw, PolandInstitute of Wood Sciences and Furniture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 166, 02-787 Warsaw, PolandThe article concerns the quality issues in wood industry, and especially the advisability of removing defects from veneers. The research purpose of the study was to analyse the influence of the layered structure of plywood base layer made of low-quality wood on selected mechanical properties of floor composites. The utilitarian purpose is to analyse the possibility of producing floors from low-quality materials reducing waste. Four quality classes of Scots pine veneers (<i>Pinus sylvestris</i> L.) were taken into account: A, B, C, D, from the highest class-A without defects to the lowest class-D characterized by a lot of knots (including broken and falling out ones) and cracks. The base layer of the floors was made of these wood quality classes. The value of the modulus of elasticity in elastic deformation, modulus of elasticity in the dynamic and fatigue tests, stiffness and static bending strength were investigated. The test results showed that, as expected, the samples made of class A had the highest values of the measured parameters (static bending strength, static and dynamic modulus of elasticity, and stiffness). However, the values of the tested parameters for the remaining classes B, C, and D did not significantly differ. It was concluded from the research that the change of the plywood base layer conditions regarding the quality of veneers does not significantly affect the physical and mechanical properties of composites. Hence, it is possible to use wood of lower quality classes for production without verification of which class they belong to, which will significantly reduce the production costs.https://www.mdpi.com/1999-4907/12/8/1017flooringcompositeveneerquality |
| spellingShingle | Izabela Burawska-Kupniewska Paweł Mycka Piotr Beer Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials Forests flooring composite veneer quality |
| title | Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials |
| title_full | Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials |
| title_fullStr | Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials |
| title_full_unstemmed | Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials |
| title_short | Influence of Scots Pine (<i>Pinus sylvestris</i> L.) Veneers Quality on Selected Properties of Layered Composite for Flooring Materials |
| title_sort | influence of scots pine i pinus sylvestris i l veneers quality on selected properties of layered composite for flooring materials |
| topic | flooring composite veneer quality |
| url | https://www.mdpi.com/1999-4907/12/8/1017 |
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