Glossary

What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle.

Electrochemical metal removal (ECM) Eddy-current inspection Electro-discharge machining (EDM) Efficiency Electroless nickel plating Electropolishing Engine 3E Engine price Enthalpy reaction rate Etching (etch inspection) Etch inspection Exhaust jet

Etch inspection

The examination of material structures and detection of machining defects are made possible or facilitated by etching of the component surfaces. Etching for material defects (non-conforming grain sizes, segregations) is performed prior to mechanical machining and etching to detect machining defects (cracks) thereafter.