Concrete radiography
AssigneeDavis Laboratories, Inc.
InventorJames Davis
Life of this patent
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Abstract
An improved way of using radiographic imagery to capture internal characteristics of a concrete structure, wherein radiographic film is placed on one side of the concrete structure and X-rays are transmitted towards the film from the other side. A target which is selectively radiographically impervious may be interposed to generate location or guidance indicia on the film. The target may itself be non-symmetric, such as being L-shaped, or alternatively or in addition, the location indicia may be non-symmetrically located on the target or alternatively, may be arrayed about the circumference of the target similar to numerals of a clock face. Imagery resulting from radiographic imagery may or may not display inclusions and other anomalies of the concrete structure.
Claims20
A circular target for forming guidance indicia on a radiographic image of an inclusion contained within a substrate, simultaneously with exposing radiographic film to form the radiographic image, comprising:
- a plate of radiographically pervious material bearing radiographically impervious masking material for forming the guidance indicia on the final radiographic image;
- and
- means for enabling an observer to ascertain the precise location of the target on the substrate, wherein
- the radiographically impervious masking material is arranged such that at least some of the guidance indicia is arrayed about the perimeter of the target as a series of spaced apart graphic entities.
A target for forming guidance indicia on a radiographic image of an inclusion contained within a substrate, simultaneously with exposing radiographic film to form the radiographic image, comprising a plate of radiographically pervious material bearing radiographically impervious masking material for forming guidance indicia on the final radiographic image, wherein the plate of radiographically pervious material has a perimeter bearing an incuse portion.
A target for forming guidance indicia on a radiographic image of an inclusion contained within a substrate, simultaneously with exposing radiographic film to form the radiographic image, comprising
- a plate of radiographically pervious material fabricated from metal bearing radiographically impervious masking material fabricated from another metal for forming the guidance indicia on the final radiographic image;
- and
- means for enabling an observer to ascertain the precise location of the target on the substrate, wherein
- the radiographically impervious masking material is arranged such that at least some of the guidance indicia is arrayed about the perimeter of the target as a series of spaced apart graphic entities.
Dependencies are inferred from the claim text.