Radiographic testing RT
A volumetric non-destructive testing method that uses X-ray radiation to detect and locate internal discontinuities — from classic radiography to DDA digital imaging.
Digital radiography in practice
We treat digital radiography as the quality standard
X-TEST performs accredited radiographic testing with DDA digital detectors. The technology captures the radiographic image directly in digital form and allows it to be analysed in depth. We have many years of experience in testing welded joints and castings, including evaluating indications against ASTM digital reference catalogues.
Get in touchAbout radiographic testing
Radiography uses ionising radiation to image the internal structure of a component and to detect discontinuities such as gas pores, inclusions, lack of penetration, casting imperfections and changes in material thickness, including corrosion loss.
RT is widely used to inspect welded joints, castings and components of complex geometry. Whether the method can be applied depends on factors such as the material, the thickness and geometry of the component and access to the area under test.
In digital radiography with DDA detectors the image is captured directly in digital form, which allows fast evaluation, archiving and measurement of indications on the image.
Method characteristics
Radiographic testing uses X-ray or gamma radiation, whose attenuation depends on the thickness, density and type of material, among other factors. Differences in absorption make it possible to image the internal structure of the component and reveal discontinuities such as gas pores, inclusions, lack of penetration, voids and casting imperfections.
How it works
The radiation source is positioned so that the beam passes through the area under test and reaches the detector or radiographic film. Differences in attenuation form a radiographic image on which indications can be located and evaluated.
Depending on the technique, the image is recorded on radiographic film or directly in digital form with a DDA detector.
Advantages of the method
- Detects internal discontinuities without damaging the component
- Clear image of the internal structure of the area under test
- Suitable for welded joints, castings and components of complex geometry
- Permanent record of the test result
- Digital analysis, measurement and archiving of images with DDA
Radiographic techniques we use
Digital technique (DDA detector)
Digital Detector Array — a digital image in real time
Digital radiography with a DDA detector replaces traditional film with a digital image recorded by a flat panel detector (FPD). The image is available immediately, with no time-consuming photochemical processing. The digital technique also allows advanced image processing, clearer indications and more accurate analysis and documentation of results.
Measurement capabilities:
- Locating and identifying indications
- Measuring indications on the radiographic image
- Assessing thickness changes and local material loss — in suitable applications
- Digital image processing and analysis
- Archiving and comparing test results
Scope of testing:
- Welded joints to PN-EN ISO 17636-2:2023-04*
- Castings to PN-EN 12681-2:2017-12*
Evaluation of castings against ASTM reference radiographs:
- Aluminium and magnesium castings — ASTM E155 / E505 and ASTM E2422 / E2869 / E2973 digital reference images
- Steel investment castings — ASTM E192 / ASTM E2660 digital images
- Steel castings — ASTM E446 / ASTM E2868 digital images
Radiographic equipment we use
We have professional equipment for digital radiography.
DDA digital radiography
- DDA digital detector — high-resolution flat panel
- X-ray tubes for industrial inspection
- Digital archiving and analysis of radiographic images
- Image quality indicators (penetrameters)
- Software for measuring and analysing defects
- PN-EN ISO 17636-1:2023-02 — welded joints, film techniques
- PN-EN ISO 17636-2:2023-04 — welded joints, digital detectors*
- PN-EN 12681-2:2017-12 — castings, digital detector techniques*
- Custom procedures per client requirements
| Analogue catalogue | Digital catalogue |
|---|---|
| ASTM E155 | ASTM E2973 for Al / E2869 for Mg |
| ASTM E505 | ASTM E2422 |
| ASTM E192 | ASTM E2660 |
| ASTM E446 | ASTM E2868 |
* Standards within the scope of our accreditation (PCA certificate no. AB 1927).
Applications
- Welded joints
- Castings (aluminium, magnesium, cast iron, steel)
- Ceramics
- Plastics
- Assembly and fit verification
Need radiographic testing?
Write to us — we will match the technique and scope of inspection to your product.
Contact us