发明名称 |
Method of determining acoustic transit times for material having high acoustic attenuation properties |
摘要 |
A method for determining time a single transit of an acoustic wave through a test material using a calibration material having known acoustic velocity characteristics and an acoustic pitch-catch system with a signal recorder for recording a received signal as a function of time. The system includes a first configuration for transmission of acoustic shear waves and a second configuration for transmission of acoustic longitudinal waves. In the first configuration, a first acoustic zero is determined when the acoustic shear waves are applied to the calibration material. In its second configuration, a second acoustic zero is determined when the acoustic longitudinal waves are applied to the calibration material. Each configuration is coupled to a test material with the respective first and second acoustic zeroes identified on the recorder. The signal recorder determines a single transit time for the acoustic waves through the test material. |
申请公布号 |
US8276431(B1) |
申请公布日期 |
2012.10.02 |
申请号 |
US20080228320 |
申请日期 |
2008.08.08 |
申请人 |
LATIMER PAUL J.;BIRKS ALBERT S.;THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
LATIMER PAUL J.;BIRKS ALBERT S. |
分类号 |
G01N29/30;G01N29/07 |
主分类号 |
G01N29/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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