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Stator blades

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046422
EISBN: 978-1-62708-234-1
... as erosion-producing conditions. Dynamometers Stator blades CA-6NM UNS J91540 Erosive wear Corrosive wear Cavitation wear Figure 1 shows severely eroded stator vanes of a hydraulic dynamometer for a steam-turbine test facility. The stator was cast from a copper-manganese-aluminum alloy...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
... edge. ( b ) SEM image illustrating the minute fatigue striations Fig. 4 ( a ) Photograph of the fractured rotor blade on 16th stage showing dent at the trailing edge. ( b ) EDS spectrum representative of the dent area Fig. 5 ( a ) Photograph of the fractured stator vane on 16th...
Image
Published: 01 December 2019
Fig. 2 Photographs of ( a ) the damaged and fractured rotor blade on 17th stage ( b ) damaged stator vane More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001756
EISBN: 978-1-62708-241-9
... by a curvic coupling which locates the drum and shaft and transmits the turbine drive. Compressor stator assembly consists of a series of vanes welded on the outer platform to form a ring behind each row of rotor blades in each stage. The HP nozzle guide vane (NGV) assembly is positioned on the rear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... of centrifugal forces, residual manufacturing stresses, and the steady-state operating temperature gradients. Time varying stresses are superimposed upon the base level stresses and are primarily the result of the rotor-stator interaction with the steam flow path and various randomly applied stresses...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
.... Likewise, liquid-droplet impingement in steam turbines can be minimized by interstage moisture removal to reduce the amount of condensed water that can impact downstream stages and by increasing the spacing between stator and rotor rows to break up the droplets. Nevertheless, threats from cavitation...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001079
EISBN: 978-1-62708-214-3
... passing between rotating blades mounted on the outside of the turbine rotor and stationary blades mounted on the inside of the turbine casing surrounding the turbine rotor. The turbine rotor in turn drives the generator rotor, which is housed in a stator where electricity is produced. Fig. 1 Steam...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... Distress damages Vibration Short/open circuit Failed components Sleeve bearing Seal Coupling Shaft Pinion/ball/turning gear Casing Rotor Impeller Shroud Piston Diaphragm Wheel Blades; foil, root, shroud Labyrinth Thrust bearing Pivoted pad bearing Roller/ball bearing Cross-head piston Cylinder...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... of Examples 1 and 2. Example 1: Ice Cream Drink Mixer Blade Failures. Excessive assembly stresses and inappropriate detail design caused the premature failures of ice cream drink mixer blades shortly after the mixing machines were introduced into service. A mixer blade as-manufactured is shown...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... in the turbine industry. When turbine generators are brought to operating speed there are several speeds that match the natural frequencies of the various blades. The natural frequency of a blade will depend on blade length as well as other material/geometric parameters. It is necessary, due to thermal...