Abstract in coils (copper conductors) and generator electric circuits at the end sides of its rotor. In some cases, fracture of blades causes short circuit betwe n rotor and stator and conse-quently generator
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Occasionally, damage also occurs at the trailing edge of the blade. The work of the blade (containing a notch formed as a result of a collision with a hard object) under resonance conditions...
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Initial investigation pointed out that three blades were fractured and several others were cracked just about 11 hours after resuming operation following the last major overhaul, causing extensive damage
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Several cases relating the damage mechanisms associated with blades failures, e.g., corrosion-erosion, carbides precipitation, oxidation, coating degradation, high and low cycle fatigue,
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Fractures in gas turbine cooling fan blades occurred within the first 100 hours of operation. Analysis revealed high cycle fatigue as the primary cause of blade fractures. Resonance conditions can lead
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Problem: Many generator components are susceptible to fatigue stresses that can initiate cracking. To illustrate: Low-cycle fatigue cracking caused by cyclic operation can occur in rotor-forging tooth tops
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Generator rotor fans/blowers are subject to both high steady and fatigue stresses during operation. The fan/blower blade itself is highly stressed. The highest stresses in an axial blower are developed in the
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Generator rotor fans/blowers are subject to both high steady and
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Initial investigation pointed out that three blades were fractured and several others were cracked just about 11 hours after resuming operation following the last major overhaul, causing
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In some cases, fracture of blades causes short circuit between rotor and stator and consequently generator explosion and huge financial loss.Since fracture in cooling fan blades has
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