Method and device for detecting changes in the mechanical state

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

1981-08-31

1983-08-30

Birmiel, Howard A.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73584, 73665, 181121, G01H 1300, G01M 700

Patent

active

044009801

ABSTRACT:
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.

REFERENCES:
patent: 3345861 (1967-10-01), Heath
patent: 4128011 (1978-12-01), Savage
patent: 4147228 (1979-04-01), Bouyoucos
patent: 4231259 (1980-11-01), Thiruvengadam et al.
patent: 4284165 (1981-08-01), Airhart et al.

Affiliated with

Also associated with

Rating

Method and device for detecting changes in the mechanical state does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for detecting changes in the mechanical state , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for detecting changes in the mechanical state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-901174