Component inspection by self generated transient stress wave det

Details Component inspection by self generated transient stress wave det Component inspection by self generated transient stress wave det

1984-06-18

1986-04-29

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

045848793

ABSTRACT:
A method of inspecting a component in which the surface of the component is scanned with a loud speaker, the sonic output of which is arranged to be at such a frequency or frequencies as to cause any cracks, fractures or unbonded regions within the component to generate transient stress wave emissions. An acoustic emission transducer is attached to the component surface so as to detect any such transient stress wave emissions and thereby provide evidence of the existence of any such cracks, fractures or unbonded regions.

REFERENCES:
patent: 3564903 (1971-02-01), Woodmansee et al.
patent: 4111053 (1978-09-01), Geithman et al.
patent: 4122724 (1978-10-01), Geithman et al.

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