Radiation testing -

Japanese: 放射線探傷 - ほうしゃせんたんしょう

A type of non-destructive testing. When there is a defect inside an object, the degree of radiation penetration changes, and this method uses this change to detect internal defects by measuring the intensity of the radiation that penetrates. The thickness of materials and products can also be measured in a similar manner. X-rays, gamma rays, neutron rays, and beta rays are used as radiation, and there are various methods for measuring their intensity, including direct and indirect photography, fluoroscopy, and X-ray television.

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

非破壊検査の一つ。物体の内部に欠陥があると，放射線の透過程度が変わることを利用，透過した放射線の強度を測定して内部の欠陥を検査する方法。同様にして材料，製品の厚さ測定もできる。放射線としてはＸ線，γ線，中性子線，β線などを用い，その強度の測定には直接・間接撮影，透視，Ｘ線テレビなど種々の方法がある。

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