Measuring and testing – Vibration – By mechanical waves
Patent
1993-03-03
1995-02-07
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73624, 73636, 73639, G01N 2926
Patent
active
053867270
ABSTRACT:
A system and method for dynamically and non-destructively measuring the longitudinal stresses in a rail of a continuous rail track includes an ultrasonic transmitter which transmits a signature coded pulse pattern through a rail which pulse pattern is altered by the rail section dependent upon the longitudinal stress within the rail. The altered pulse pattern is then received and a data processor, in conjunction with a rail height detector, a rail temperature detector, and a rail splice detector, dynamically determines the longitudinal stresses in the rail as a function of the received pulse characteristics and calculates the stress free temperature (SFT) of the rail. A rail marker marks portions of the rail having unacceptable SFT values. Stress and related rail data are recorded on a data log. A position sensor provides milepost positions to three decimal places.
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Finley Rose M.
Herzog Contracting Corporation
Williams Hezron E.
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