Non Destructive Testing
Description
The NDT shop is DGCA & EASA approved. We are having NDT level III engineer on board for providing the best possible quality solution of components and Airocraft. NDT methods may rely upon use of electromagnetic radiation, sound, and inherent properties of materials to examine samples.
We have four inspection processes
Ultrasonic inspection (UT) is a non-destructive test method that utilizes sound waves to detect cracks and defects in parts and materials. It can also be used to determine a material’s thickness, such as measuring the wall thickness of a pipe. Because of the portability of the equipment and variety of methods available, ultrasonic testing allows for inspection of parts that are large, irregularly shaped, or unable to be transported.
Ultrasonic inspection relies on electronic transducers that transmit high-frequency sound waves to a material. These sound waves bounce back crystal-clear images, which reveal key characteristics about a material’s properties. The images created by ultrasonic testing can indicate cracks, weld grooves and fractures, as well as indicate material thickness and outline moving components.
Because this method has higher power potential than other non-destructive test types, ultrasonic inspection can produce images that are more clearly defined than other methods, and indicate characteristics deeper than surface level. Depending upon the test requirements, parts can be tested by immersion (in-lab testing) or contact (portable/in-air) inspection.
In liquid penetrant nondestructive testing, dye flows into a sample's cracks and defects and makes them visible, either to the naked eye or under fluorescent light. In much the same way, Element Materials Technology scientists employing Eddy Current inspection direct electrical currents to flow over a sample.
A flow of periodic electrical currents in conductors called probes creates varying electromagnetic fields. These probes are placed in close proximity to the surfaces of the test materials, and can detect effects of processing and shaping operations during production, as well as corrosion damage or cracking for most nonmagnetic metals and alloys.Eddy current techniques are commonly used for the nondestructive examination and condition monitoring of a large variety of metallic structures, including heat exchanger tubes, aircraft fuselage, and aircraft structural components.
An industry standard for decades, liquid penetrant testing—also known as zyglo testing, PT services, fluorescent testing, or dye penetrant testing—remains one of the most reliable, efficient, and cost-effective nondestructive methods for detecting surface flaws in non-porous metals.
Liquid penetrant inspection is a valuable tool for evaluating the surfaces of welds, castings, and other components that cannot be destroyed. In addition to checking for cracks, it can also be used to determine other surface characteristics, such as porosity.
Liquid penetrant inspection is performed by examining defects made visible by a penetrant fluid. After applying a liquid dye and allowing for proper dwell time, the part is cleaned and a developing powder is applied. The developer pulls up liquid that has seeped into cracks or pores, resulting in visible marks that identify defects. An inspector can then provide a report with the type, number and size of defects on a component.
Magnetic particle inspection, sometimes called MT, MPI, or mag particle, is a nondestructive test method used to check for surface and sub-surface discontinuities and defects. The process puts a magnetic field into the part and the piece is magnetized by direct or indirect magnetization.
Because this method relies on a magnetic field to produce results, it works best on ferrous materials, like nickel, iron, cobalt, and some alloys. Components like billets, bars, castings, forgings, fasteners, weldments and extrusions are also commonly tested using magnetic particle inspection.