Measuring and testing – Vibration – By mechanical waves
Patent
1990-11-13
1991-10-01
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73597, 73624, 73627, G02N 924
Patent
active
050522272
ABSTRACT:
A device is disclosed for measuring the variation of the distance separating the two faces of a layer of solid material by means of ultrasounds, comprising:
REFERENCES:
patent: 4287769 (1981-09-01), Buckley
patent: 4510812 (1985-04-01), Feng
patent: 4658648 (1987-04-01), Roddeck
patent: 4669310 (1987-06-01), Lester
patent: 4672851 (1987-06-01), Blessing et al.
Le Floc'h Christian M.
Perrot Francois
Francos William
Societe Nationale Industrielle
Williams Hezron E.
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