| Project/Area Number |
15K07522
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Wood science
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| Research Institution | Forest Research and Management Organization |
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Principal Investigator |
KUBOJIMA Yoshitaka 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (40353669)
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| Co-Investigator(Kenkyū-buntansha) |
園田 里見 富山県農林水産総合技術センター, 富山県農林水産総合技術センター木材研究所, 副主幹研究員 (80446640)
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| Co-Investigator(Renkei-kenkyūsha) |
KATO Hideo 国立研究開発法人・森林研究・整備機構, 森林総合研究所, 主任研究員等 (60370277)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 重量測定 / 密度 / ヤング率 / 振動試験 |
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| Outline of Final Research Achievements |
By using the phenomenon that the resonance frequency of the striking sound becomes lower than when the weight is attached to the wood, it is possible to calculate the weight, density and Young's modulus of the wood without weight measurement using a vibration test method (mass addition vibration method ) On the site was examined. As a result, appropriate experimental conditions on the location of the tree, the weight attachment method, mass and adhesion surface, test body moisture content, vibration generation method were clarified. In addition, it was revealed that mass addition vibration method can be applied to the piling material and wooden guardrail material. Furthermore, we proposed the averaging of the frequencies near the peak as a method for improving the estimation accuracy.
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