| タイトル | Ultrasonic attenuation - Q measurements on 70215,29 |
| 著者（英） | Trice, R.; Warren, N.; Stephens, J. |
| 発行日 | 1974-01-01 |
| 言語 | eng |
| 内容記述 | Ultrasonic attenuation measurements have been made on an aluminum alloy, obsidian, and rock samples including lunar sample 70215,29. The measurement technique is based on a combination of the pulse transmission method and the forced resonance method. The technique is designed to explore the problem of defining experimentally, the Q of a medium or sample in which mode conversion may occur. If modes are coupled, the measured attenuation is strongly dependent on individual modes of vibration, and a range of Q-factors may be measured over various resonances or from various portions of a transient signal. On 70215,29, measurements were made over a period of a month while the sample outgassed in hard varuum. During this period, the highest measured Q of this sample increased from a few hundred into the range of 1000-1300. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 75A39731 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/447118 |
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