Measuring and testing – Vibration – By mechanical waves
Patent
1995-06-21
1996-11-26
Oda, Christine K.
Measuring and testing
Vibration
By mechanical waves
73642, G01N 2904
Patent
active
055787584
ABSTRACT:
An ultrasonic railhead investigating apparatus is described wherein a side looking transducer is used with a lens to focus the beam in a manner whereby rail defects in the sides of rail head are more readily detected. In one form of the invention a side rail investigating transducer is provided with a curved emitting surface and so located as to place the focused acoustic beam between a side of the rail and the rail center. The curved emitting surface can be part of a cylindrical surface aligned parallel with the longitudinal axis of the rail or a spherically shaped emitting surface to provide a conically shaped beam for investigating the side of a rail.
REFERENCES:
patent: 4557146 (1985-10-01), Buffington
patent: 4576048 (1986-03-01), Glenn
patent: 5056368 (1991-10-01), Kawasaki
Havira R. Mark
Iorfino Anthony
Oda Christine K.
Pandrol Jackson Technologies, Inc.
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