ASTM C 1331 Standard Test Method for Measuring Ultrasonic Velocity in Advanced Ceramics with Broadband Pulse-Echo Cross-Correlation Method

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ASTM C 1331 Document Information:

Title
Standard Test Method for Measuring Ultrasonic Velocity in Advanced Ceramics with Broadband Pulse-Echo Cross-Correlation Method

ASTM International

Publication Date:
May 10, 2001

Scope:

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.

Keywords:

ceramic composites
material microstructure
materials characterization
monolithic ceramics
nondestructive evaluations
polycrystalline metals
pulse-echo technique
structural composites
ultrasonics
ultrasonic velocity

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