Digital Radiography for performing Non-Destructive testing

Digital radiography is a cutting-edge technique that uses digital detector systems to display the x-ray image immediately on a computer screen without the use of intermediate scanning or development agents.

Through the use of a detector sensor, the incident x-ray radiation is transformed into an equivalent electric charge and ultimately into a digital image.

A flat panel detector, when compared to conventional imaging devices, produces high-quality digital images with an increased signal-to-noise ratio and dynamic range, which in turn results in excellent sensitivity for radiographic applications.

Indirect conversion and direct conversion are the two methods used by flat panel detectors. Flat panel detectors with indirect conversion make use of an amorphous silicon photodiode matrix.

The best sharpness and resolution are provided by direct conversion flat panel detectors, which use a photoconductor like amorphous selenium (a-Se) or cadmium telluride (Cd-Te) on a multi-micro electrode plate. Thin film transistors are used to read the data from both types of detectors.

In the process of direct conversion, photons that collide with a photoconductor, such as amorphous selenium, are instantly transformed into electronic signals that are amplified and digitalized. Since there is no scintillator present, there is no lateral spread of photons, resulting in a sharper image. It differs from indirect construction because of this.

An Overview

Digital radiography is being utilized increasingly frequently to find flaws, cracks, corrosion, erosion, and loss of wall thickness as a result of advancements in digital technology.

All industrial sectors employ digital radiography, and it is especially useful for inspecting pipes, pressure vessels, and valves. Aluminum, steel, polymers, and composites are just a few of the materials that the approach can identify discontinuities.

The process is comparable to conventional radiography, but no film is used to record the images. Instead, flat panel detectors or imaging plates with phosphor coatings are used to capture images. Two forms of digital radiography are used by MQS:

  • Image capture is done using reusable phosphor-coated imaging plates in computed radiography (CR).
  • Flat panel detectors are used in digital radiography (DR) to capture images. 

Digital radiography offers a number of significant advantages, including the ability to improve and enlarge images for viewing and interpretation of results.

Our inspectors can give you immediate reporting and digital photographs that make data exchange simple. Images can be provided to professionals off-site for simultaneous review or sent so that work can continue across time zones. Digital photos can also be electronically archived, making it simpler to keep, find, and see them later. Digital radiography can also save on the physical storage space that would typically be needed for conventional film because there are no radiographic films to keep.

Another benefit is that expenses may be managed since, unlike traditional radiographic testing, digital radiography is not affected by changes in the price of film.

MQS provides digital radiography in a lab and on-site. You have complete peace of mind knowing that when we do site radiography, all legal stipulations and legislative notifications—including those pertaining to the transfer of isotopes, containment barriers, and warning systems—are upheld.

Our highly skilled and knowledgeable staff members hold Level 2 or 3 qualifications from the PCN, ASNT, SNT-TC-1A, and NAS410/EN4179. You can rely on our operators’ knowledge and experience to correctly interpret results when evaluating the integrity of your equipment and assets if you choose MQS to perform digital radiography.