Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1984-01-26
1987-06-30
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324240, G01N 2782, G01R 3312
Patent
active
046773797
ABSTRACT:
The present invention relates to a process and device for the non-destructive examination of riveted joints or the like, particularly for monitoring the fuselage of an aircraft. According to the invention, an eddy current probe is used and two rectangular components of the signal of unbalance from the latter are compared with thresholds predetermined by prior measurements on similar new joints, in order to determine the presence and/or the absence of cracks.
REFERENCES:
patent: 3852820 (1974-07-01), Flaherty et al.
patent: 3956618 (1976-05-01), Gotz
patent: 4107605 (1978-08-01), Hudgell
patent: 4194149 (1980-03-01), Holt et al.
Arnaud Jean-Louis
Floret Michel
Eisenzopf Reinhard J.
Snow Walter E.
Societe Nationale Industrielle et Aerospatiale
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