System for detecting wheel-damage

Details System for detecting wheel-damage System for detecting wheel-damage

1987-09-23

1988-11-01

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

246169R, 340 47, 340 52R, G01M 1700

Patent

active

047810602

ABSTRACT:
The invention concerns a system to detect irregularities in the geometry of railway wheels. The system is characterized in that a linearly expanding accelerometer is solidly joined to the rail underneath its head. The accelerometer sensitivity is constant over its entire length and generates a voltage proportional to the acceleration of the rail. For different damages, the rail acceleration takes place in different directions, whereby the voltage amplitude, depending on the type of damage, evinces opposite polarities. Frequency filtering or frequency analysis permit the determination of further criteria which, together with other weighted criteria, are used to characterize wheel damage.

REFERENCES:
patent: 4050292 (1977-09-01), Bloch
patent: 4702104 (1987-10-01), Hallberg
patent: 4712423 (1987-12-01), Siffert et al.
Vibetek High Performance Lightweight Polymer Sensor Cable Brochure, Pub. 6/85 by Raychem Limited. 5 pp.
Bulletin; "Piezo Electric Wire", Published by Componex GmbH W. Germany (Date Unk.) 9 pp.
Makktuebersicht, pp. 86, 88, 90, 92, 94-96 of Markt and Technik, No. 27, Jul. 4, 1986.

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