Apparatus for testing workpieces, in particular automotive vehic

Details Apparatus for testing workpieces, in particular automotive vehic Apparatus for testing workpieces, in particular automotive vehic

1991-02-01

1992-09-15

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 58, 25037009, G01B 1506

Patent

active

051484560

ABSTRACT:
An apparatus for testing workpieces by means of X-rays includes at least one linear array of X-ray sensitive diodes which are closely spaced from each other. This allows the attainment of a high resolution. When e.g. yarns to be tested extend in the same direction as the diode line and are spaced for distances smaller than the corresponding extent of the receiving surfaces of the diodes, an effective resolution is not possible. This is why a "screen" is associated with the diode line, the screen having an aperture of a width which is smaller than the extent of the receiving surface transversely to the "screen" slot. Furthermore switch means allow skipping of certain diodes during scanning in order to obtain a scanning speed increase.

REFERENCES:
patent: 3916200 (1975-10-01), Sparks, Jr. et al.
patent: 4870279 (1989-09-01), Cueman et al.

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