X-ray or gamma ray systems or devices – Auxiliary data acquisition or recording
Patent
1992-09-29
1994-02-01
Church, Craig E.
X-ray or gamma ray systems or devices
Auxiliary data acquisition or recording
378 59, 378207, H05G 128
Patent
active
052838226
ABSTRACT:
A blackline indictor for use in tomographic and/or radioscopic inspection of a weld joint is disclosed. The indicator includes a first elongated member having a first end and a second end and a second elongated member juxtaposed to said first member and also having a first end and a second end. The first ends of the elongated members are in contact with one another, and a spacer is disposed between the first and second members to position the second ends of the members at a selected distance from one another. The selected distance is at least equal to a thickness of the weld joint under inspection, and the first and second members and the spacer define a calibrated wedge shaped gap which is radiographically imageable to permit determination and control of the x-ray inspection parameters. The blackline indicator constituents may be magnetized to hold the constituents together and to permit attachment of the indicator to a workpiece under inspection in a position where the calibrated wedge shaped gap will be substantially superimposed over the weld joint in a radiographic image thereof with one of the elongated members being substantially parallel to the weld joint.
REFERENCES:
patent: 3521059 (1970-07-01), Stolle
Little Francis H.
Nightingale Gerald B.
Church Craig E.
General Electric Company
Moore, Jr. Charles L.
Squillaro Jerome C.
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