Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1984-01-10
1985-09-10
Ciarlante, Anthony V.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73 86, 422 53, G01N 2904
Patent
active
045398461
ABSTRACT:
An ultrasonic corrosion monitor is provided which produces an in situ measurement of the amount of corrosion of a monitoring zone or zones of an elongate probe placed in the corrosive environment. A monitoring zone is preferably formed between the end of the probe and the junction of the zone with a lead-in portion of the probe. Ultrasonic pulses are applied to the probe and a determination made of the time interval between pulses reflected from the end of the probe and the junction referred to, both when the probe is uncorroded and while it is corroding. Corresponding electrical signals are produced and a value for the normalized transit time delay derived from these time interval measurements is used to calculate the amount of corrosion.
REFERENCES:
patent: 2619605 (1952-11-01), Lancor
patent: 3350942 (1967-11-01), Peltola
patent: 3540265 (1970-11-01), Lynnworth
patent: 4161665 (1979-07-01), Buck et al.
patent: 4440862 (1984-04-01), Cheng et al.
Ciarlante Anthony V.
Hightower Judson R.
The United States of America as represented by the United States
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