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Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-06202016-150548


Tipo di tesi
Tesi di laurea magistrale
Autore
NOCCHI, MATTEO
URN
etd-06202016-150548
Titolo
Test rig design for thermo-mechanical fatigue life assessment of gas turbine blades
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA MECCANICA
Relatori
relatore Ing. Monelli, Bernardo Disma
relatore Prof. Beghini, Marco
relatore Prof. Bertini, Leonardo
Parole chiave
  • Blade
  • Creep
  • Fatigue
  • FEM
  • Gas Turbine
  • Life assessment
  • Thermal fatigue
Data inizio appello
13/07/2016
Consultabilità
Non consultabile
Data di rilascio
13/07/2086
Riassunto
In this thesis a test rig for blade life assessment has been designed. The test article is a blade from the first stage of a gas turbine; it is made in DS nickel alloy and shows a polycrystalline zone in the first cooling hole at the base of the trailing edge. To assure test rig’s performances in term of strength, stiffness and service life Finite Element Methods have been widely used (i.e. large multi-body contact problems, anisotropic and temperature-dependent material properties). The test rig will be used to determine life/residual life of blades with/without polycrystalline defects; this can show if and how this defects reduce components’ life. Results from these tests are also useful to develop, validate or tune life assessment models.
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