Non-Destructive Testing

Non-Destructive Testing

 

X-ray images of two compressor blades (left) and a close-up of a turbine blade (right) from a jet engine. The compressor blades compress the air coming into the front of the engine. Thes are made of complex aerodynamic shapes but relatively simple construction. As the compressed air in the centre of the engine is heated by burning fuel, it rushes out the back, creating thrust. Turbine blades in the exhaust take some of this energy to turn the compressor blades. They operate at incredible temperatures, so have complex cooling channels inside them. X-ray imaging is used widely to spot any casting errors during manufacture, or any corrosion or fatigue cracks during service.

Image © Courtesy of Vidisco Ltd.

 

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