| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
This study was carried out to develop the new determination testing technique for bone mass density with the ultrasonic guided modes. The content is as follows; (1) the guided modes, which propagate the imitated tibia in the longitudinal direction and can be used for the density testing, were identified through theoretical analysis, numerical simulations, and experiment. (2) Based on the super-resolution beam foaming method for the array signal-processing, the algorithms which estimate the dispersive phase velocity of guided modes precisely were developed. (3) In analyzing the guided wave experiment data using a linear porous theory, the adaptive range and problems of the presented method were clearly shown, confirming the performance of an array signal-processing method and the consistency with the theoretical-analysis results.
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