Determining the extent of a lateral shadow zone in an...

Details Determining the extent of a lateral shadow zone in an... Determining the extent of a lateral shadow zone in an...

2005-12-23

2008-08-26

Chapman, John E (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Apparatus for measuring by use of vibration or apparatus for...

C073S620000

Reexamination Certificate

active

07415865

ABSTRACT:
A method of determining the extent of a lateral shadow zone corresponding to an edge of a part in a method of inspecting the part in immersion by means of an ultrasound beam, the method consisting in determining the extent of the shadow zone from the edge of the part by measuring the effective section of the ultrasound beam at the surface of the part, and in determining said effective section from variations in the amplitude of an echo of the beam as a function of the distance between the axis of the beam and the edge of the part.

REFERENCES:
patent: 3969926 (1976-07-01), Walker et al.
patent: 4453408 (1984-06-01), Clayman
patent: 5054310 (1991-10-01), Flynn
patent: 5565627 (1996-10-01), Dorr
patent: 2 806 162 (2001-09-01), None

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