Defect detector for cord reinforced tire fabric

Details Defect detector for cord reinforced tire fabric Defect detector for cord reinforced tire fabric

1985-12-30

1987-11-10

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 58, G01B 1506, G01N 2302

Patent

active

047062673

ABSTRACT:
A system for detecting missing or crossed cords in cord reinforced tire fabric. The entire width of the fabric as it is being made is scanned by a highly collimated X-ray source and a sensor. A change in the amount of X-ray radiation penetrating the fabric indicates the presence of the cords. A counter which counts at a fixed rate is gated on during the time that a cord's presence is detected. The total count in a small section of the fabric, called a slice, is proportional to the number of strands in the slice. Since the counting rate is relatively high with respect to the scan time, the system can easily detect missing or overlapping cords.

REFERENCES:
patent: 3497693 (1970-02-01), Duttschmid et al.
patent: 3727054 (1973-04-01), Herrick

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