Method and device for measuring underwater vehicle hull vibratio

Details Method and device for measuring underwater vehicle hull vibratio Method and device for measuring underwater vehicle hull vibratio

1991-07-25

1993-05-04

Williams, Hezron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

G01H 1300

Patent

active

052071006

ABSTRACT:
A method and device for measuring higher mode vibrational energy is provi. The device includes a plurality of sensors placed with uniform spacing around the circumference of a structure and a processing unit. The sensor placement may be either on the inside or the outside of a structure depending on the structure and on the experiment. In operation, signals from individual sensors, preamplified if required, are fed to processing equipment. The processing equipment performs a double Fast Fourier Transform. The first transform is done on temporal data thereby providing an output representing a frequency spectrum. The second transform is performed on simultaneous data readings from all sensor locations thereby providing an output representing a spectrum of mode numbers. The combining of these outputs provides a three-dimensional plot of amplitude versus frequency and mode number.

REFERENCES:
patent: 4689993 (1987-09-01), Slettemoen
patent: 4877488 (1989-10-01), Cody et al.
patent: 4894787 (1990-01-01), Flannelly et al.

Affiliated with

Also associated with

Rating

Method and device for measuring underwater vehicle hull vibratio 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 measuring underwater vehicle hull vibratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for measuring underwater vehicle hull vibratio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1967969