Custom Probes
This probe was designed for the rail industry to scan for radial or tangential cracks on the surface area around 12mm nominal holes. The holes could only be accessed from one side with limited access, requiring a compact automated probe assembly, as it would be difficult and unreliable to try and manually scan the probe under these conditions. The probe has a remote stepper motor connected via a flexible drive lead. The head of the probe is fitted with three expanding fingers that centralize and hold the probe in place. This minimizes the size of the probe yet allows the scanning to be automated, allowing the system to be used by a single operator who can concentrate on the scan. The motor is directly controlled by the host unit to provide a synchronized scan making the system fully automated. Degree markers on the scan indicate the position of any defects.
As is often the case in our industry a need arises that cannot be adequately addressed with standard off the shelf NDT products. In these situations Newt International have a proven track record of supplying custom built sensors, software and systems to fit the need of the client quickly, to budget and most importantly meet the application specification with a successful working end product. Some examples of previous custom built probes are shown below.
This probe was developed for scanning pipe welds after construction. This probe is
integrated into a mandrel system (the picture shows a test rig and not the mandrel).
The probe was connected from a local transceiver via a 100m data lead to the host
unit. A custom system was provided to accommodate the fast scan times required, in
combination with a multi-
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The Lizard system has been automated for inspecting inner cracking of LPG tanks under robotic control. Expoxy layers are applied on the inner tank surface to alleviate stress corrosion cracking which without the Lizard system would require removal before complete inspection. The system shown here is a remote scanner with magnetic rollers carrying automated Lizard Field Gradient Imaging tracked using a video camera. The system is able to provide crack detection down to 10mm in length by 1mm depth and assures full coverage of the inspection area. To read more on the system please follow this link.
Many thanks to Dr Yung-
Field Gradient Imaging -
Non-
