Method and device for detecting changes in the mechanical...

Details Method and device for detecting changes in the mechanical... Method and device for detecting changes in the mechanical...

G - Physics

01

N

73/83

G01N 3/34 (2006.01) G01M 7/08 (2006.01)

Patent

CA 1168060

IN THE CANADIAN PATENT AND TRADEMARK OFFICE PATENT APPLICATION entitled: METHOD AND DEVICE FOR DETECTING CHANGES IN THE MECHANICAL STATE OF THE MEMBERS OF A STRUCTURE IMPLANTED IN THE SEA. Inventor: Philippe LEPERT Applicant: Société Anonyme styled: SYMINEX ABSTRACT OF THE DISCLOSURE The invention relates to a method and device for detecting changes in the mechanical state of the members of a structure implanted in the sea, whereby each member is subjected to impacts and after each impact, the simultaneous signals of excitation and dynamical response of the member are recorded, the signals of identical frequency being processed in order to define a ratio which varies with the frequency and presents peaks. The aforesaid operations are repeated at regular intervals, a watch being kept for any shifts in the peaks which could indicate a change in the structure.

385489

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