ASTM C1331 Standard Test Method for Measuring Ultrasonic Velocity in Advanced Ceramics with Broadband Pulse-Echo Cross-Correlation Method
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ASTM International
Standard Test Method for Measuring Ultrasonic Velocity in Advanced Ceramics with Broadband Pulse-Echo Cross-Correlation Method
N C1331
Annotation
This test method describes a procedure for measurement of ultrasonic velocity in structural engineering solids such as monolithic ceramics, toughened ceramics, and ceramic matrix composites.
This test method is based on the broadband pulse-echo contact ultrasonic method. The procedure involves a computerimplemented, frequency-domain method for precise measurement of time delays between pairs of echoes returned by the back surface of a test sample or part.
This test method describes a procedure for using a digital cross-correlation algorithm for velocity measurement. The cross-correlation function yields a time delay between any two echo waveforms (1).2
2 The boldface numbers in parentheses refer to the list of references at the end of this test method.
Автоматический перевод:
Стандартный метод испытаний для измерения сверхзвуковой скорости в усовершенствованной керамике с широкополосным методом перекрестной корреляции Импульсного Эха
Этот метод испытаний описывает процедуру для измерения сверхзвуковой скорости в структурных технических твердых частицах, таких как монолитная керамика, ужесточенная керамика и керамические матричные соединения.
