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
1974-02-25
1976-02-10
Woodiel, Donald O.
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
039370682
ABSTRACT:
A transducer arrangement for ultrasonic rail tester coupling carriages comprising a first pair of flat angle signal transducers that are both connected to be senders and receivers and are directed in opposite directions lengthwise forwardly and rearwardly of the rail along the center of the rail head, a second pair of flat angle signal transducers that are both connected to be senders and receivers and are directly forwardly and rearwardly of the rail but are canted toward the rail gauge edge at an angle of 19.degree., and a third pair of flat angle signal transducers, one of which is a sender and the other of which is a receiver, that are canted in opposite directions toward the rail gauge edge at an angle of 80 degrees to provide a zig-zag signal path of multiple bounces across the rail head. The transducers act through transmitting wedges made of a material to be inefficient as a medium through which ultrasonic sound may be sent such that a significantly improved signal to noise ratio results.
REFERENCES:
patent: 2672753 (1954-03-01), Drake
patent: 3028751 (1962-04-01), Joy
patent: 3251220 (1966-05-01), Joy
patent: 3279242 (1966-10-01), Megoloff
patent: 3415110 (1968-12-01), Cowan
Kreitman Stephen A.
Woodiel Donald O.
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