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Conduct borescope examination is an inseparable part in the operation of engines, gas turbines, APU, running at work or in the fleet. Borescope methods inspection gives an idea about the internal condition of the combustion chamber, a compressor part, the turbine.

Visual and dimensional control is applicable to very different objects. This includes high temperature and dangerous radiation conditions, chemically active media, etc.

This method differs for the ultrasound method in that an eddy current sensor does not require a coupling liquid. Many see the eddy current NDT method attractive due to its comparatively fast process. Such inspection is quite feasible and efficient even with objects of complex geometry or those located in difficult spots.

One of efficient methods of detecting through and surface discontinuities is capillary control. It uses tracing fluids with a high penetration ability. They are also called penetrants.

This technology is used to determine the ageing degree of pipes in main pipelines, and of other assemblies and mechanisms. US inspection equipment is most widely deployed in oil, chemical, aviation and machinery building industries, as well as in public utilities.

The method is perfectly suited for detecting superficial faults and hidden faults lying at the maximum depth of 2–3 mm.

This control method is based on the study of magnetic fields, which dissipate around the inspected area after being magnetized

As an object transfers, radiates or absorbs heat, its surface temperature changes. Using these data, one can make a conclusion on the object's condition and eliminate the fault beforehand.

Depending on the procedure, heat monitoring is divided into two types:

Usually this way of solving a damaged blade is resorted to if the hit is formed hub voltage, which, due to centrifugal forces can cause the separation of the blade and the death of all the engine stages and is extremely expensive repair. Such places are burnished transitions and the roots of the blades