Wood-Based Materials
Staff
Research Topics
Since wood, which is a natural material, fluctuates more than iron and concrete, I am developing the design of strength based on probability theory for high-reliability laminated lumber (Glulam), LVL and CLT and also developing simulation software for that purpose. In addition, based on the material of wood, I am developing a wood bonding method that has never been thought so far, and a wood joint with high rigidity and high yield strength. Furthermore, with the aim of decarbonizing, I am developing wood materials and structures that are easy to tear down, reuse, recycle, and use in cascade, and I am also developing a wood module construction method that is excellent in labor saving and energy saving.
Development of the design of strength based for high-reliability Glulam, LVL and CLT and simulation software based on probability theory
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Since wood is a natural material, its properties fluctuate more than iron and concrete. Therefore, by processing into laminae or veneer and laminating, adhering these elements to form composite materials, it is possible to obtain a high-reliability wood-based materials with little fluctuation in strength. In addition, companies actually use the simulation software developed for that purpose, acquire new JAS products that is not in the Japanese Agricultural Standard (JAS), and put them on the market. |
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Development of high-rigidity, high-bearing wood joints that have never been thought of before
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Development of high-rigidity, high-bearing wood joints that have never been thought so far Abstract: It is said that the key to design wood structure lies in joints because joints are often drawbacks because joint tools are easily embedded into wood or wood splits at the periphery of joint tools. In addition, connections (joint of wood with different fiber direction) are more difficult than splices (joint of wood with same fiber direction) even if an adhesive is used. Therefore, I aim to develop wood joints with high rigidity and high yield strength by devising the processing of connections. |
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Development of labor-saving and energy-saving wood module construction method that is easy to tear down, reuse and recycle
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Even in the corona calamity, the construction industry is undermanned. Therefore, prefabricated construction is attracting attention, and I am developing a module (unit) construction method using CLT, large panels for the conventional construction. In such a unit construction method, the construction can be torn down so as to rotate the video film at the construction in the reverse direction, and if the torn down units are transported to the factory, they can be easily separated and disassembled. In addition, since it is mainly processed in factories, it is excellent in labor saving and energy saving, and can greatly contribute to decarbonization. |
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Publication List
- Makoto KOSEKI and Noboru NAKAMURA: validayion of theEstimation of the Element Strength Distribution of Laminated Veneer Lumber II. Validation by comparing 1-ply strength distributions including a laminating effect with estimated strength distributions, Mokuzai Gakkaishi, 61(6), 371-378(2015)
- Relationship between the Vertical Load Properties of Floors and Human Sensory Evaluations of Walking Vibration in Wooden Schools and Offices, Ken-ichi SUGIMOTO, Noboru NAKAMURA et al, 63(2), 98-107(2017)
- Estimation of the internal shear strength distribution of the element for laminated veneer lumber by nonlinear least-squares method, Makoto Koseki, Noboru Nakamura and Shinichiro Naoi, Journal of Wood Science, 64, 635-641(2018)
- Fire Retandancy of Fire-retardant-impregnated Wood after Natural Weathering II. Degradation behavior of fire-retardant-impregnated wood used with water-soluble fire retardant, Mayayuki KAWARASAKI, Noboru NAKAMURA et al, 66(1), 31-38(2020)
- AMPLIFICATION CHARACTERISTICS OF THE HORIZONTAL VIBRATION ON ROAD TRAFFIC VIBRATION TO WOODEN HOUSE, Kiyoshi INA and Noboru NAKAMURA et al, AIJ. J. Technol. Des, Vol.26, No64, 984-989(2020)
- Estimation of the perpendicular-to-the-grain tensile strength of Scots pine glued laminated timber via three-point bending tests, Shigefumi Okamoto, Nobuhiko Akiyama, Noboru Nakamura, Kenji Aoki and Masahiro Inayama, Journal of Wood Science, 67, 33-43(2021)