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Scope

1.1 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.

1.2 This test method is based on the broadband pulse-echo contact ultrasonic method. The procedure involves a computer-implemented, frequency-domain method for precise measurement of time delays between pairs of echoes returned by the back surface of a test sample or part.

1.3 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).

Keywords

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

To find similar documents by ASTM Volume:

03.03 (Nondestructive Testing)

03.04 (Magnetic Properties)

15.01 (Refractories, Activated Carbon; Advanced Ceramics)

To find similar documents by classification:

19.100 (Non-destructive testing Including testing equipment: industrial apparatus for X-ray and gamma radiography, penetrant flaw detectors, etc. Non-destructive testing of welded joints, see 25.160.40 Industrial radiographic films, see 37.040.25 Non-destructive testing of metals, see 77.040.20)

81.060.30 (Advanced ceramics)

81.060.99 (Other standards related to ceramics)

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