Method for radiographic inspection of components
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorsKarl SCHREIBER, Josef GEITNER
Life of this patent
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Abstract
During the radiographic inspection of components by X-rays for better detection of defects, preferably automated, an uneven surface topography (2) of the component (1) is covered with a smoothening layer (8) made of a material whose volume-specific radiation absorption corresponds to that of the component material, so that a decrease of radiation absorption or an increase in radiation intensity due to the uneven surface topography is reduced to accentuate a radiation effect caused by internal material defects.
Claims20
A method for radiographic inspection of a component using at least one of X-rays and gamma rays wherein an absorption and intensity of radiation impinging on a radiographic sensitive device upon passing through the component is changed by material defects in the component, comprising:
- applying a smoothening layer over an uneven surface topography of the component, the smoothening layer made of a material having a volume-specific radiation absorption corresponding to that of a base material of the component, thereby reducing an effect of the uneven surface topography on the radiographic sensitive device, in comparison to an effect on the radiographic sensitive device caused by internal material defects of the component, when radiation is passed through the component,
- wherein the smoothening layer is made of a plastically deformable material having metal powder embedded therein, the metal powder having a same X-ray absorption as the base material of the component.
A method for inspection of a component, comprising:
- applying a smoothening layer over an uneven surface topography of the component, the smoothening layer made of a material having a volume-specific radiation absorption corresponding to that of a base material of the component,
- the smoothening layer being made of a plastically deformable material having metal powder embedded therein, the metal powder having a same radiation absorption as the base material of the component;
- and
- passing radiation through the smoothening layer applied component and onto a radiographic sensitive device to observe at least one of a decrease of radiation absorption or an increase in radiation intensity caused by defects of the component;
- reducing an effect of the uneven surface topography on the radiographic sensitive device with the smoothening layer, in comparison to an effect on the radiographic sensitive device caused by internal material defects, when the radiation is passed through the component, to more clearly identify the internal material defects.
Dependencies are inferred from the claim text.