Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication
The purpose of this paper is to develop a method of constructing density distribution charts in roundwood log based on the density values obtained with a resistograph. The problem of improving the performance properties of structures made of wood and wood-based composite materials and laminated prod...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Czech Academy of Agricultural Sciences
2016-12-01
|
| Series: | Journal of Forest Science |
| Subjects: | |
| Online Access: | https://jfs.agriculturejournals.cz/artkey/jfs-201612-0006_creation-of-density-distribution-charts-in-the-cross-and-axial-section-of-a-tree-trunk-short-communication.php |
| _version_ | 1828008004440555520 |
|---|---|
| author | M.F. Lavrov I.A. Doktorov G.M. Parnikova |
| author_facet | M.F. Lavrov I.A. Doktorov G.M. Parnikova |
| author_sort | M.F. Lavrov |
| collection | DOAJ |
| description | The purpose of this paper is to develop a method of constructing density distribution charts in roundwood log based on the density values obtained with a resistograph. The problem of improving the performance properties of structures made of wood and wood-based composite materials and laminated products is particularly relevant for construction in the northern regions. The experience of building in Yakutia shows sufficient reliability and durability of structures made of larch wood, despite the fact that their use is associated with technological challenges: larch planks warp and crack during the drying process; rigidity of wood increases. These disadvantages are caused by the structural features of the wood material; the degree of their intensity is proportional to the index of wood density. This paper presents the methods and results of qualitative research on wood indices obtained in laboratory and field conditions, as well as the authors' methods of graphical representation of density distribution in the cross and axial sections of a tree trunk, which are based on measurements taken via the method of oriented drilling. In the experimental studies, we performed a comparative analysis of the two-dimensional charts of density distribution with the charts of velocity distribution of acoustic pulses produced by a sonic tomograph "Arbotom". The elaborated method of evaluating the quality indicators of forest resources contributes to the expansion of the boundaries of wood-based material utilization, reduces their cost and improves the quality of construction of wooden structures and buildings. |
| first_indexed | 2024-04-10T08:18:15Z |
| format | Article |
| id | doaj.art-3d9d63abc1e742e1ab164d6e988fd737 |
| institution | Directory Open Access Journal |
| issn | 1212-4834 1805-935X |
| language | English |
| last_indexed | 2024-04-10T08:18:15Z |
| publishDate | 2016-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Journal of Forest Science |
| spelling | doaj.art-3d9d63abc1e742e1ab164d6e988fd7372023-02-23T03:42:45ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2016-12-01621257157910.17221/24/2016-JFSjfs-201612-0006Creation of density distribution charts in the cross and axial section of a tree trunk- Short CommunicationM.F. Lavrov0I.A. Doktorov1G.M. Parnikova2Department of Woodworking Technology and Wooden Constructions, Institute of Engineering & Technology, North-Eastern Federal University in Yakutsk, Yakutsk, RussiaDepartment of Woodworking Technology and Wooden Constructions, Institute of Engineering & Technology, North-Eastern Federal University in Yakutsk, Yakutsk, RussiaDepartment of Woodworking Technology and Wooden Constructions, Institute of Engineering & Technology, North-Eastern Federal University in Yakutsk, Yakutsk, RussiaThe purpose of this paper is to develop a method of constructing density distribution charts in roundwood log based on the density values obtained with a resistograph. The problem of improving the performance properties of structures made of wood and wood-based composite materials and laminated products is particularly relevant for construction in the northern regions. The experience of building in Yakutia shows sufficient reliability and durability of structures made of larch wood, despite the fact that their use is associated with technological challenges: larch planks warp and crack during the drying process; rigidity of wood increases. These disadvantages are caused by the structural features of the wood material; the degree of their intensity is proportional to the index of wood density. This paper presents the methods and results of qualitative research on wood indices obtained in laboratory and field conditions, as well as the authors' methods of graphical representation of density distribution in the cross and axial sections of a tree trunk, which are based on measurements taken via the method of oriented drilling. In the experimental studies, we performed a comparative analysis of the two-dimensional charts of density distribution with the charts of velocity distribution of acoustic pulses produced by a sonic tomograph "Arbotom". The elaborated method of evaluating the quality indicators of forest resources contributes to the expansion of the boundaries of wood-based material utilization, reduces their cost and improves the quality of construction of wooden structures and buildings.https://jfs.agriculturejournals.cz/artkey/jfs-201612-0006_creation-of-density-distribution-charts-in-the-cross-and-axial-section-of-a-tree-trunk-short-communication.phpquality indicatorslarix gmeliniiresistance-drillingresistographdensitogramgraphical representation |
| spellingShingle | M.F. Lavrov I.A. Doktorov G.M. Parnikova Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication Journal of Forest Science quality indicators larix gmelinii resistance-drilling resistograph densitogram graphical representation |
| title | Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication |
| title_full | Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication |
| title_fullStr | Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication |
| title_full_unstemmed | Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication |
| title_short | Creation of density distribution charts in the cross and axial section of a tree trunk- Short Communication |
| title_sort | creation of density distribution charts in the cross and axial section of a tree trunk short communication |
| topic | quality indicators larix gmelinii resistance-drilling resistograph densitogram graphical representation |
| url | https://jfs.agriculturejournals.cz/artkey/jfs-201612-0006_creation-of-density-distribution-charts-in-the-cross-and-axial-section-of-a-tree-trunk-short-communication.php |
| work_keys_str_mv | AT mflavrov creationofdensitydistributionchartsinthecrossandaxialsectionofatreetrunkshortcommunication AT iadoktorov creationofdensitydistributionchartsinthecrossandaxialsectionofatreetrunkshortcommunication AT gmparnikova creationofdensitydistributionchartsinthecrossandaxialsectionofatreetrunkshortcommunication |