The Industrial Radiography ensures the integrity and reliability of a product; also, provides information for the development of better production techniques and the development of a particular product.
Inspection for Industrial Radiography, is defined as a method of non-destructive inspection of a physical, designed to detect discontinuities and macroscopic changes in the internal structure or physical configuration of a material.
Applying Industrial Radiography, usually an image of the internal structure of a part or component is obtained, Because this method employs high energy radiation, which is able to penetrate solid materials, so the main purpose of this type of inspection is to obtain permanent records for the study and evaluation of discontinuities in the material. For the above, This test is used to detect internal discontinuities in a wide variety of materials.
The physical principle behind this technique is based on the interaction between matter and electromagnetic radiation, the latter being a very short wavelength and high energy.
During the radiographic exposure, the energy of the rays or Gamma is absorbed or attenuated when passing through a material. This attenuation is proportional to the density, thickness and configuration of the inspected item.
Ionizing radiation that gets through the object can be recorded by means of printing on film or photosensitive paper, subsequently undergoes a development process for the image of the area inspected; o bien, by means of a fluorescent screen or a tube video, then analyze your image on a television screen or record a video tape.
By and large, It is a process similar to photography, with the main difference that the X-rays or Gamma rays used and no light energy.
- The particular properties of radiography facilitate its application to industrial scale, medical and research; additionally because the energy of the radiation may be absorbed by the material, You can also make certain substances fluoresce; being by this that the technique has various applications in different branches.
- First, are applications in which the radiant energy is used and its effect on the subject, as is the case for physical applications (fluorescence effects) medical (destruction of certain cells) and biological (mutations or biological sterilization applications).
- Second, applications in which the physical effects used to be mentioned, such as diffraction (determining crystallographic structures), Fluorescence (determination of chemical composition) and ionization (Radiation Detection), etc..
- Thirdly, they have applications in the attenuation of the radiation is measured, as is the case in thickness measurement in high temperature process; measuring fluid levels; density determination in continuous production processes and Industrial Radiography.
- Finally, remains clear that the shorter wavelength of X-ray radiation used allows it to penetrate solids, which absorb or reflect visible; leading to the use of this technique in the quality control of welded products, smelters, forjas, etc.. macroscopic detection of internal defects such as cracks, undercuts, incomplete root penetration, lack of fusion, etc..
Advantages of Industrial Radiography
- It is an excellent means of manhole.
- Their use extends to various materials.
- A visual image of the inside of the material is obtained.
- Obtained a permanent record of the inspection.
- Discover manufacturing errors and helps establish corrective actions.