Redesign of ultrasonic systems used at Sperry Rail Service's fleet of detector cars; ultrasonic channels in redesigned wheel search units are featured; induction system will reset itself at bolt hole without giving alarm, short distance after last echo is received from hole; however, if crack is present, signals from it will continue to register until preset alarm count is reached; if alarm system is set to detect cracks 1 in. or more long, two alarms would be received from 2 in. crack. (See also Ry Age v 160 n 18 May 9 1966 p 20-2)
Sperry improves its rail test cars
Ry Track Structures
Railway Track and Structures ; 62 , n 5
1966
4 pages
Aufsatz (Zeitschrift)
Englisch
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Sperry improves its rail test cars
Engineering Index Backfile | 1966
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