Radiographic Testing (RT): Our radiographic testing services utilize X-rays or gamma rays to detect internal flaws and assess the quality of welds, castings, and other components.

Radiographic Testing (RT) or X-ray Testing, is a non-destructive testing method used to examine the internal structure of materials for defects or discontinuities. It is commonly employed in industries such as manufacturing, construction, oil and gas, aerospace, and power generation.

Here’s how Radiographic Testing works:

Radiation Source: A controlled source of penetrating radiation is used in RT. This source is typically an X-ray machine or a radioactive isotope, such as Iridium-192 or Cobalt-60. The choice of the radiation source depends on the material being tested, the thickness of the material, and the required level of sensitivity.

Exposure: The radiation source is positioned on one side of the test specimen, and a film or digital detector is placed on the opposite side. The radiation is then directed towards the test specimen, and the radiation passes through the material.

Attenuation: As the radiation passes through the material, it is attenuated or absorbed based on the density and thickness of the material. Areas of the material with defects or discontinuities will cause variations in the amount of radiation reaching the film or detector.

Image Formation: The film or digital detector records the radiation that passes through the test specimen. A latent image is formed on the film or captured digitally by the detector. The areas of the image that correspond to regions with defects or variations in material thickness will appear differently compared to the areas without defects.

Image Development: For film-based radiography, the exposed film is processed using chemicals to develop a visible image. In digital radiography, the captured image is processed electronically for visualization and interpretation on a computer screen.

Interpretation: The radiographic image is examined by a trained inspector or radiographer. They evaluate the image for indications of defects, such as cracks, voids, inclusions, porosity, or other irregularities within the material. The inspector considers the size, shape, and location of the indications to determine their significance.

Reporting: The inspector documents the findings in an inspection report, including details of any detected defects, their dimensions, and their locations within the test specimen. The report may also include recommendations for further testing or actions based on the identified defects.

Radiographic Testing can provide detailed information about the internal structure of a material, making it effective for detecting both surface and subsurface defects. It is commonly used for inspecting welds, castings, forgings, pipelines, pressure vessels, and other components where internal defects may be critical.

Due to the potential hazards associated with radiation exposure, Radiographic Testing should be performed by qualified personnel who have received specialized training and certification. Strict safety procedures and regulations are followed to ensure the protection of personnel and the environment during the testing process.