SUBMARINE SOUND AND VIBRATION MEASUREMENT U.S. NAVY FILM 27144

[@normdoty]

our sonar man had a unit he strapped to his chest with headphones and a wand with some type of sensor at the end of the wand , he would touch it to the machinery and write down the levels displayed on his meter display , some times he would shut down the machinery until repairs could be made .. long complicated video , way above my understanding bit i'm sure they knew what they were doing ..SSBN 608 1971,1972 ..

[@jmfz28]

I didnt know they use sonar man as vibration analist on board. It makes sense since the vibration is a mechanic waveform, the sonar man is basically a mechanic waveform analyst. what your sonar man was doing was analyzing the sound spectrum from the machinery, if levels increased or a particular frequency changed he would recommend to make a repair. I'm a rotating equipment vibration analyst and very recently i discovered some resemblances with sonar man.

[@Garganzuul]

You don't let the magnet with accelerometer snap like at 13:06. The sensor is very delicate and expensive.

[@deaththink]

not anymore it aint

[@johnhopkins6260]

WOW... Brüel & Kjær vs. Heathkit...

[@IsaacOLEG]

So those measurements are also used to determine condition of machinery? (as the noises and vibration are measured monthly or any 6 months they have references to compare, it may be possible to point certain wear or misfunction depending of the frequency changes is it?

[@PeriscopeFilm]

Yes, these measurements determine when machines have to be upgraded, replaced, or fixed.

[@jmfz28]

Yes and by seeing which frequency are predominant you can also figure out which component is wearing or misfunctioning.