SoftwareNDT Calculator - Film exposure calculator
The program SoftwareNDT Calculator calculates the exposure times during radiographic testing with the isotopes Se75, Ir192 and Co60. The film density in the weld seam and in the base material is calculated. Exposure times in radiographic inspection (also known as X-ray inspection) are crucial for detecting material defects such as cavities, pores, bonding defects and cracks. The exposure time depends on several factors, including the radiation intensity, the wavelength of the beams, the thickness of the component to be inspected, and the desired density of the X-ray film. |
To achieve the best results, an exposure diagram is often used, which shows the relationship between wall thickness, tube current, film and foil type, and the distance between film and focus. With the program SoftwareNDT Calculator you can determine the precise exposure time for the respective inspection.
An exposure graph shows the wall thickness in millimeters and the exposure size in mA × min (Ci × min). There are exposure diagrams for X-ray tubes or radiation sources such as cobalt-60, iridium-192 or selenium-75. The program SoftwareNDT Calculator uses exposure diagrams to determine the correct exposure time.
The SoftwareNDT Calculator program contains exposure curves for cobalt-60, iridium-192 and selenium-75.
Wall thickness ranges of the exposure curves:
Cobalt-60: 15 to 140 mm
Iridium-192: 2 to 100 mm
Selenium-75: 1 to 30 mm
Film density during radiographic testing is an important factor in assessing the quality of both the base material and the weld. The blackening indicates the density of radiation passing through the material. Differences in film density can indicate material defects, changes in material thickness, or irregularities in the weld. The program SoftwareNDT Calculator calculates the film density in the base material and in the weld seam.
The films can be adjusted, and the correction values can be calculated automatically.