Examples of radioisotopes as radiation sources in industry
1) Non-destructive inspection.
Gamma ray radiation can be used to check for defects in metal or welded joints by x-raying the material.
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| This technique is based on the property that the thicker the material through which the radiation passes, the lower the intensity of the transmitted radiation will be, so that the image can be seen whether the metal is evenly distributed or there are hollow parts in it. In the hollow part the film will be blacker, |
2) Controlling the thickness of the material
The thickness of the product in the form of sheets, such as film or metal plates can be controlled by radiation. The principle is the same as above, that the intensity of the transmitted radiation depends on the thickness of the material through which it passes.
The radiation detector is connected to a pressure device. If the sheet becomes thicker, the radiation intensity received by the detector will decrease and the instrument mechanism will adjust the pressure more so that the thickness can be maintained.
3) Preservation of materials
Radiation has also been widely used to preserve materials such as wood, art items and others. Radiation can also improve the quality of textiles because it changes the fiber structure so that it is stronger or has better color absorption quality. Various types of food can also be preserved with safe doses so that they can be stored longer.