Method for non-destructively testing construction elements

Details Method for non-destructively testing construction elements Method for non-destructively testing construction elements

1981-03-27

1983-05-17

Kreitman, Stephen A.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73 1DV, 73620, G01N 2904

Patent

active

043834469

ABSTRACT:
A method of non-destructively testing construction elements accessible from only one side by measuring their resonant oscillations to detect flaws in them without scanning. A test piece (1) is excited with a narrow band ultrasonic oscillation whose frequency is varied; the amplitudes of the resonant oscillations are measured and plotted in an xy coordinate system against the frequency of the exciting ultrasonic oscillations.

REFERENCES:
patent: 2716887 (1955-09-01), Smith
patent: 3872443 (1975-03-01), Ott

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