| 摘要 |
PURPOSE: To measure a material constant of a sample without contact. CONSTITUTION: A sample 11 is vibrated by a vibrating means 12. Vertical waves 14 for example among the vertical waves, lateral waves and distortional waves caused by the sample 11 are picked up by a pick-up means 14 to obtain a frequency where an n-order (n=1, 2,...) spectrum of the vertical waves occurs is obtained by a frequency detecting means 23. A convergence operation means 24 performs convergence operation of a material constant of the sample 11 by using a plurality of vibration frequencies detected by the frequency detecting means 23 so that these frequencies satisfy a precalculated relational equation between the material constant of the sample 11 and vibration sound. |
