Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Recurso digital |
| Language: | English |
| Published: |
Zenodo
2020
|
| Subjects: | |
| Online Access: | https://doi.org/10.3390/ma13071699 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866901233180082176 |
|---|---|
| author | Martinez, Roberto D. Balmori, J.A. Llana, Daniel F. Bobadilla Maldonado, Ignacio |
| author_facet | Martinez, Roberto D. Balmori, J.A. Llana, Daniel F. Bobadilla Maldonado, Ignacio |
| contents | <p>The novelty of this study is the development of an accurate wood moisture content (MC)<br>estimation method based on a relatively brand-new, non-destructive testing technique (drilling chips<br>extraction). The method is especially important in the assessment of existing timber structures,<br>where non-destructive testing (NDT) results are a ected by wood MC and should be adjusted to a<br>reference MC, usually 12%. In the assessment of timber structures, it is not possible to determine MC<br>by oven drying method and this should be estimated. Electrical resistance and capacitance are the<br>conventional methods used for MC estimation. This research work aims to present an accurate MC<br>estimation method based on the drilling chips extraction technique. For that, 99 specimens (90 65 <br>38 mm3) from three softwood and hardwood species covering a wide range of densities (from 355 to<br>978 kg m 3) were tested after conditioning at five di erent MCs (5%, 10%, 15%, 20%, 25%). TheWood<br>Extractor device based on the drilling chips extraction technique was used. The mass of the chips<br>collected (drilling residue) from each drill was recorded. The results show that the MC of the chips<br>extracted was statistically significantly di erent than the MC of the specimen and cannot be directly<br>used as MC determination. However, the chips MC can be used as an estimator of specimen MC with<br>high determination coecients (R2 from 71% to 86%). As the main result, models to estimate density<br>directly adjusted to a reference 12% MC from the wet and dry mass of chips extracted were developed<br>with an R2 of 98%. In sum, the drilling chips extractor is a dependable and straightforward method<br>to estimate MC and density from only one measurement. Density adjusted to a reference 12% MC<br>can be directly estimated from a single model.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_3390_ma13071699 |
| institution | Zenodo |
| language | eng |
| publishDate | 2020 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Wood Density and Moisture Content Estimation by Drilling Chips Extraction Technique Martinez, Roberto D. Balmori, J.A. Llana, Daniel F. Bobadilla Maldonado, Ignacio density estimation MC adjustment drilling residue non-destructive testing wood extractor timber structures assessment <p>The novelty of this study is the development of an accurate wood moisture content (MC)<br>estimation method based on a relatively brand-new, non-destructive testing technique (drilling chips<br>extraction). The method is especially important in the assessment of existing timber structures,<br>where non-destructive testing (NDT) results are a ected by wood MC and should be adjusted to a<br>reference MC, usually 12%. In the assessment of timber structures, it is not possible to determine MC<br>by oven drying method and this should be estimated. Electrical resistance and capacitance are the<br>conventional methods used for MC estimation. This research work aims to present an accurate MC<br>estimation method based on the drilling chips extraction technique. For that, 99 specimens (90 65 <br>38 mm3) from three softwood and hardwood species covering a wide range of densities (from 355 to<br>978 kg m 3) were tested after conditioning at five di erent MCs (5%, 10%, 15%, 20%, 25%). TheWood<br>Extractor device based on the drilling chips extraction technique was used. The mass of the chips<br>collected (drilling residue) from each drill was recorded. The results show that the MC of the chips<br>extracted was statistically significantly di erent than the MC of the specimen and cannot be directly<br>used as MC determination. However, the chips MC can be used as an estimator of specimen MC with<br>high determination coecients (R2 from 71% to 86%). As the main result, models to estimate density<br>directly adjusted to a reference 12% MC from the wet and dry mass of chips extracted were developed<br>with an R2 of 98%. In sum, the drilling chips extractor is a dependable and straightforward method<br>to estimate MC and density from only one measurement. Density adjusted to a reference 12% MC<br>can be directly estimated from a single model.</p> |
| title | Wood Density and Moisture Content Estimation by Drilling Chips Extraction Technique |
| topic | density estimation MC adjustment drilling residue non-destructive testing wood extractor timber structures assessment |
| url | https://doi.org/10.3390/ma13071699 |