Masaaki Okuma

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This paper presents the result of using a spatial matrix identification method to estimate the rigid body properties of a frame structure. Frequency response functions in three directions at 10 points of the structure are measured by hammer testing. The boundary condition of the structure is free-free. Using the single-input-multiple-output FRFs, the(More)
The effect of the number and the location of glue lines in the cross section on the bending properties has been studied on plywood bonded with tannin-formaldehyde adhesive. The thickness of glue line has also been investigated. By comparing the theoretical equations with the empirical ones, we can get the thickness of the glue line of wattle tannin adhesive(More)
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