Neutron Radiography and Turbine Blades

Air cooling is the most readily available means for keeping turbine blades from breaking or melting while the engine is running, and in order to get the most from the air streaming through the engine, turbine blades are cast with delicate cooling channels running through them. In the manufacturing process, though, these channels can become clogged. It’s important that these defective blades be screened out as thoroughly as possible in quality assurance, and neutron radiography is the most effective nondestructive testing method for this purpose.

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