Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1990-01-24
1991-11-26
Raevis, Robert
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73625, 73628, 73640, 73641, G01N 2924, G01N 2910
Patent
active
050673521
ABSTRACT:
So as to control parts of any form, such as panels made of a composite material, a control head (10) is used comprising a small bar made of an elastic material, aligned ultrasonic transducers (18) being placed in said control head which functions by reflected light. The small bar bears contact blocks (22,24) which are brought into support on the surface of the part to be controlled, which has the effect of deforming the small bar and orientating each of the transducers perpendicular to the surface. As regards parts having a non-uniform shape, a uniform quality of the control is thus ensured, the same applying for a reduction of the control time. A precise control of the evolution of the structure of parts during production is also rendered possible. Advantageously, the transducers are mounted on the small bar so as to be disassembled, said mounting being effected by means of wedging members, such as screws and metal wire clips.
REFERENCES:
patent: 3350925 (1967-11-01), Coy
patent: 4437468 (1984-03-01), Sorenson et al.
patent: 4572981 (1986-02-01), Zola
patent: 4715228 (1987-12-01), Livsey et al.
patent: 4801835 (1989-01-01), Nakaga et al.
Finley Rose M.
Raevis Robert
Societe Nationale Industrielle et Aerospatiale
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