Method of anticipating machine failure

Details Method of anticipating machine failure Method of anticipating machine failure

1985-06-11

1986-10-07

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73660, G01N 2904

Patent

active

046152164

ABSTRACT:
A method of anticipating defects in the operation of a machine, especially a rotary machine in which high-frequency and low-frequency ranges of a body-wave spectrum in a solid part of the machine are detected and respective auto-spectral density functions G.sub.11 and G.sub.22 are formed, the cross spectral density function G.sub.12 being formed from the measurements as well. The magnitude .gamma..sup.2 =G.sub.12.sup.2 /G.sub.11 .multidot.G.sub.22 is formed and the defect is anticipated by an increase in the value of .gamma..sup.2.

REFERENCES:
patent: 3548648 (1970-12-01), Weichbrodt et al.
patent: 3793627 (1974-02-01), Darrel et al.
patent: 3872285 (1975-03-01), Shum et al.
patent: 4089055 (1978-05-01), Dyer et al.
patent: 4213114 (1980-07-01), Cochard
patent: 4425798 (1984-01-01), Nagai et al.

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