Monitoring pressurized vessels for leaks, ruptures or hard hits

Details Monitoring pressurized vessels for leaks, ruptures or hard hits Monitoring pressurized vessels for leaks, ruptures or hard hits

1995-11-03

1997-04-22

Voeltz, Emanuel T.

Boots, shoes, and leggings

364509, 73 405A, G01M 324

Patent

active

056234210

ABSTRACT:
A device monitors a pressurized vessel to detect small leaks, ruptures and hard hits on the vessel. Transducers are attached to the vessel and transmit acoustic signals which are processed to extract frequency spectra which contain dominant resonant frequency peaks, if the vessel contains a small leak. If multiple frequency component of the spectra shift to a lower frequency suddenly and stay at the lower frequency, this indicated the presence of a larger leak or rupture. A hard hit on the vessel, for example by machinery, is detected by a shift in the transient response of harmonics in the acoustic signal.

REFERENCES:
patent: 4201092 (1980-05-01), Dau
patent: 4455863 (1984-06-01), Huebler et al.
patent: 4543817 (1985-10-01), Sugiyama
patent: 4960079 (1990-10-01), Marziale et al.
patent: 5341670 (1994-08-01), Brook et al.
patent: 5416724 (1995-05-01), Savic

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