Investigation of multiaxial fatigue in the context of turboengine disc applications

Failure of metals II: Fatigue

“…This phenomenon was also observed in tests by Ohtani et al [148] on the nickel-base single crystal superalloy CMSX10 at 1000°C as well as by Antolovich et al on René 77 [133], René 80 [134,135] and Waspaloy [144] at elevated temperatures. Additional work on the effects of oxidation on the fatigue behaviour of superalloys used in turbo-engine disc applications can be seen elsewhere [157,158].…”

Isothermal and thermo-mechanical fatigue behavior of the nickel base superalloy Waspaloy™ under uniaxial and biaxial-planar loading

“…The uncertainties can be reduced by multiaxial material testing at elevated temperatures. Cyclic thermal and multiaxial mechanical loading was applied by tension-torsion systems with tubular specimens [10,11] and by biaxial-planar tension-compression systems with cruciform specimens [12]. Both testing devices are able to provide biaxial stress states, but the tension-torsion system can only realize a limited range in the principal stress plane.…”

“…Both testing devices are able to provide biaxial stress states, but the tension-torsion system can only realize a limited range in the principal stress plane. With an internal and external pressure on the tubular specimen an extension of the stress states to the complete principal stress plane is possible [10][11][12][13].…”

A Miniaturized Biaxial Deformation Rig for in Situ Mechanical Testing

“…A detailed description of this complex phenomenon is beyond the scope of this paper. An in-depth discussion on this topic can be found in references [24,41,43,44].…”