Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1974-08-09
1976-06-01
Queisser, Richard C.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
G01N 2904
Patent
active
039600050
ABSTRACT:
An ultrasonic testing device for inspecting thermit rail welds in a track is disclosed. The device may be passed over the top of a rail weld in a track to indicate whether there are any faults in the weld. The device includes a longitudinal shoe which may be placed lengthwise along the top surface of the rail, a transmitter which transmits an ultrasonic energy pulse and a receiver for receiving the ultrasonic energy pulse, the transmitter and receiver being positioned and aimed so that an energy pulse is directed downwards towards a location on the under surface of the rail and reflects upwards as an echo pulse so that it is received by the receiver. The indication of the transmittal and receival of the pulse is shown on a cathode ray tube or multi-channel pen recorder. A method of inspecting the thermit rail weld is also disclosed. This includes the transmission of a pulse at an angle of at least 45.degree. through the weld and receiving an echo of this pulse which has been reflected off the bottom surface of the rail.
REFERENCES:
patent: 3028751 (1962-04-01), Joy
patent: 3135109 (1964-06-01), Werner
patent: 3251220 (1966-05-01), Joy
patent: 3279242 (1966-10-01), Megoloff
patent: 3415110 (1968-12-01), Cowan
patent: 3552191 (1971-01-01), Heseding
patent: 3608361 (1971-09-01), Krautkramer et al.
patent: 3739628 (1973-06-01), Saglio
Canac Consultants Limited
Kreitman Stephen A.
Queisser Richard C.
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