The present disclosure generally relates to methods for radiographic and computed tomography (CT) inspection of workpieces having increasingly complicated internal geometry. The disclosed methods are capable of distributing a contrast agent within the detailed internal geometry of, for example, an AM workpiece or precision cast turbine blade, followed by complete removal of the contrast agent and all residues thereof after inspection.

A structure analysis method includes impregnating a resin material with a radiosensitizer. The resin material contains thermoplastic resin. The radiosensitizer contains a solvent and a radiosensitizing molecule that contains, as a heavy element, an element with an atomic number equal to or greater than that of fluorine. A relative energy difference (RED.sub.1) represented by R.sub.a1/R.sub.01 is 1.8 or less in a case where R.sub.01 is the interaction radius of the thermoplastic resin in a Hansen space and R.sub.a1 is a distance between the Hansen solubility parameters of the thermoplastic resin and the solvent.

An inspection method include introducing a mixture of expanding foam and a particulate material into a region of interest of an object, fixing the powder within the region of the interest relative to the object, and acquiring image data of the object and particulate mixture using an x-ray source and an x-ray detector. The particulate has a density that is greater than the density of a material forming the object to provide contrast between the region of interest and the object in an image generated using the image data.

An imaging system including an imaging device having a field of view and a nonaqueous radiopaque fluid positionable in the field of view, the nonaqueous radiopaque fluid having a radiodensity that is between that of a metallic portion and a non-metallic portion of an object to be imaged by the imaging device.

An inspection method include introducing a mixture of expanding foam and a particulate material into a region of interest of an object, fixing the powder within the region of the interest relative to the object, and acquiring image data of the object and particulate mixture using an x-ray source and an x-ray detector. The particulate has a density that is greater than the density of a material forming the object to provide contrast between the region of interest and the object in an image generated using the image data.

The present disclosure generally relates to methods for radiographic and computed tomography (CT) inspection of workpieces having increasingly complicated internal geometry. The disclosed methods are capable of distributing a contrast agent within the detailed internal geometry of, for example, an AM workpiece or precision cast turbine blade, followed by complete removal of the contrast agent and all residues thereof after inspection.

An inspection method include introducing a mixture of expanding foam and a particulate material into a region of interest of an object, fixing the powder within the region of the interest relative to the object, and acquiring image data of the object and particulate mixture using an x-ray source and an x-ray detector. The particulate has a density that is greater than the density of a material forming the object to provide contrast between the region of interest and the object in an image generated using the image data.

Provided is a photoelectron emission microscope that facilitates acquisition of a high-contrast photoelectron image. A photoelectron emission microscope starts irradiation of a pulsed electron beam 13 performed by an irradiation electron optical system 10 in a manner of overlapping excitation light after predetermined time has elapsed since start of irradiation of a sample 4 with excitation light 2 performed by an excitation optical system 1, and starts capturing a photoelectron image performed by a camera 6 at the time of the start of the irradiation of the pulsed electron beam performed by the irradiation electron optical system or thereafter.

An imaging system including an imaging device having a field of view and a nonaqueous radiopaque fluid positionable in the field of view, the nonaqueous radiopaque fluid having a radiodensity that is between that of a metallic portion and a non-metallic portion of an object to be imaged by the imaging device.

An imaging system including an imaging device having a field of view, an object positioned in the field of view, the object defining a void, and a nonaqueous radiopaque fluid in the void.