Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying
Wood drying, such as boxed-heart square timber, often involves surface checks, which spoils the appearance of wood products and reduces their market value. Pretreatments are performed to avoid the surface checks, but detailed information about surface strain during timber drying remains unclear. In...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2023-05-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22587 |
| _version_ | 1797794193869897728 |
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| author | Keisuke Toba Takahisa Nakai Tomoya Murano |
| author_facet | Keisuke Toba Takahisa Nakai Tomoya Murano |
| author_sort | Keisuke Toba |
| collection | DOAJ |
| description | Wood drying, such as boxed-heart square timber, often involves surface checks, which spoils the appearance of wood products and reduces their market value. Pretreatments are performed to avoid the surface checks, but detailed information about surface strain during timber drying remains unclear. In this study, surface strain detections were performed using two types of strain sensors (strain gauge and optical fiber strain sensor) to understand the surface dimensional changes during a series of pretreatments, consisting of steaming and high temperature and low humidity treatment. Simultaneous strain measurements based on the optical fiber sensor grasped the surface strain distributions in each lateral surface during timber drying; contraction behaviors were observed in the middle part of most surfaces in the early steaming stage, while one surface showed expansion. A remarkable expansion was detected in one surface during the high temperature and low humidity treatment, although most of the other surfaces showed gradual contraction behaviors. It was also discovered that the above detected behaviors were gradually reduced with the progress of each pretreatment. |
| first_indexed | 2024-03-13T02:59:16Z |
| format | Article |
| id | doaj.art-00202471efe54ce88b0dbfb514a9f253 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-03-13T02:59:16Z |
| publishDate | 2023-05-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-00202471efe54ce88b0dbfb514a9f2532023-06-27T15:57:15ZengNorth Carolina State UniversityBioResources1930-21262023-05-0118344504457615Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber DryingKeisuke Toba0Takahisa Nakai1Tomoya Murano2Department of Wood Properties and Processing, Forestry and Forest Products Research Institute, Matsunosato, Tsukuba 305-8687 JapanGraduate School of Bioresources, Mie University, Kurimamachiya-cho, Tsu 514-8507 JapanDepartment of Wood Properties and Processing, Forestry and Forest Products Research Institute, Matsunosato, Tsukuba 305-8687 JapanWood drying, such as boxed-heart square timber, often involves surface checks, which spoils the appearance of wood products and reduces their market value. Pretreatments are performed to avoid the surface checks, but detailed information about surface strain during timber drying remains unclear. In this study, surface strain detections were performed using two types of strain sensors (strain gauge and optical fiber strain sensor) to understand the surface dimensional changes during a series of pretreatments, consisting of steaming and high temperature and low humidity treatment. Simultaneous strain measurements based on the optical fiber sensor grasped the surface strain distributions in each lateral surface during timber drying; contraction behaviors were observed in the middle part of most surfaces in the early steaming stage, while one surface showed expansion. A remarkable expansion was detected in one surface during the high temperature and low humidity treatment, although most of the other surfaces showed gradual contraction behaviors. It was also discovered that the above detected behaviors were gradually reduced with the progress of each pretreatment.https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22587wood dryingsurface strainjapanese cedardrying processsensing technique |
| spellingShingle | Keisuke Toba Takahisa Nakai Tomoya Murano Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying BioResources wood drying surface strain japanese cedar drying process sensing technique |
| title | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying |
| title_full | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying |
| title_fullStr | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying |
| title_full_unstemmed | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying |
| title_short | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying |
| title_sort | temporal changes in strain condition on all lateral surfaces during pretreatment before timber drying |
| topic | wood drying surface strain japanese cedar drying process sensing technique |
| url | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22587 |
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