Method of preparing a steel cord for the measurement of stress t

Details Method of preparing a steel cord for the measurement of stress t Method of preparing a steel cord for the measurement of stress t

1974-04-22

1976-01-06

Hoffman, Drayton E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

73146, 156 64, G01M 1702

Patent

active

039309185

ABSTRACT:
Disclosed is a method and apparatus for measuring stresses in a wire or wire cord, such as that found in the reinforcing belt of a pneumatic tire. A portion of the wire is encapsulated in a solder material which is machined such that a rectangular solid billet of the solder is formed thereon. A transducer or plurality of transducers in the form of strain gauges are fixed to at least one flat surface on the billet and oriented in a direction such that forces applied to the tire will affect the resistance of the transducer. The resistance of the transducer can be balanced in a bridge network and the voltage resulting therefrom suitably readout in terms of the stress being applied to the wire cord. The cord can be built into a tire with the lead wires from the transducer being fed through the tire to the bridge network. The stress tests can then be accomplished in an inflated and running tire.

REFERENCES:
patent: 3245018 (1966-04-01), Russell
patent: 3662596 (1972-05-01), Siefert

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