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Title: A Method of Avoiding Catastrophic Failures in Turbo-Machinery
Author: John S. Eckersley and Bruce Billings
Source: Turbo Machinery Conference - Toronto
Publication year 1989
Document number: 1989063
Number of pages: 12
Abstract:
Catastrophic failures in turbo machinery are most often attributed to metal fatigue, a phenomenon that is the result of cyclic tensile stresses acting upon the doomed part.
Turbine components are subject to tensile stresses from axial centrifugal force, from bending and from torsion. In many cases, as in blades, all threse may be present and
the detrimental effect is further agrabated by environmental conditions (corrosion fatigue); by localized wear (fretting fatigue); by rolling or sliding welding or grinding.
Tensile stresses are usually highest at the surface and are concentrated by notches, holes, heat affected zones and physical damage.
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This page last revised: 04/24/2008