A METHOD FOR MEASURING GEOMETRY DEFORMATIONS OF A TURBINE COMPONENT

The invention relates to a method for measuring geometry deformations of a turbine component (14), especially of a rotor groove or blade root, the method comprising the steps of: providing the turbine component (14), or rotor groove or blade root, respectively, with at least one measuring mark (20);...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BEDNARZ, PIOTR, SLOWIK, SLAWOMIR, TSCHARNER, THOMAS, PRUGAREWICZ, MICHAL TOMASZ
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for measuring geometry deformations of a turbine component (14), especially of a rotor groove or blade root, the method comprising the steps of: providing the turbine component (14), or rotor groove or blade root, respectively, with at least one measuring mark (20); using the at least one measuring mark (20) as a reference point in determining, in a first measurement, a length (L1, L2) on said turbine component (14) or rotor groove or blade root, respectively, prior to the turbine being placed into service; operating the turbine for a period of time; determining, in a second measurement, said length (L1, L2) on said turbine component (14) or rotor groove or blade root, respectively, using again said at least one measuring mark (20) as a reference point, after said operating period; and comparing the measured lengths (L1, L2) of said first and second the second measurement; and determining an amount of creep deformation in said turbine component (14) or rotor groove or blade root, respectively, based on a difference between said measured lengths.