Backscatter Radiographic Technique
Stray radiation backing technique is a radiographic testing that uses X-rays or gamma rays to detect density and flaws in components. It suits hollow bodies and pipelines with single-side access.
Physikalisch-chemischer Wirkmechanismus
The backscatter technique uses the backscattering of X-rays or gamma rays. These rays are scattered by the material, and the backscatter (the part of the beam that is scattered back) is measured. The denser the material, the more backscatter there is.
Metallurgical Relevance & Welding Risks
This method is particularly suitable for testing hollow bodies and pipelines where access to the component is only possible from one side. It can detect flaws such as pores, cracks, or lack of fusion. A faulty backscatter can lead to incorrect results and cause potential defects to be overlooked.
Werkstattpraxis & Handlungsanweisungen
To correctly use the backscatter technique, follow these steps:
1. Set up the equipment: Make sure the radiation source and detector are properly aligned.
2. Position the component: Position the component so that the beam passes directly through it.
3. Perform the measurement: Start the measurement and record the backscatter value.
4. Interpret the results: Compare the measured value with the specific standard values for the material and component type.