Method and system for detecting defects in tire sidewalls

Details Method and system for detecting defects in tire sidewalls Method and system for detecting defects in tire sidewalls

1990-03-06

1991-10-22

Westin, Edward P.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 58, 378 10, G01B 1506, G01N 2302

Patent

active

050602500

ABSTRACT:
A positioning arm (44) is provided with a plurality of elongated members carrying two combinations of a radiation source (46; 58) and a sensor (48; 60). Each sidewall is interposed between a radiation source (46; 58) and a sensor (48; 60). The radiation sources (46; 58) provide a collimated beam of radiation which is relatively unattenuated (absorbed) in passing through the elastomer in the tire sidewall, but will be reflected by the steel wire cords in the sidewall. Each combination of a radiation source and sensor scans a sidewall of the tire at a predetermined speed to detect sidewall defects such as missing or improperly spaced cords.

REFERENCES:
patent: 4706267 (1987-11-01), Chase et al.
patent: 4949366 (1990-08-01), Collmann

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