fatigue notch factor

fatigue notch factor

[fə′tēg ′näch ‚fak·tər]
(metallurgy)
A notch, scratch, or other impairment on the surface of a metal resulting in premature failure of the metal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The fatigue notch factor, [K.sub.f], is defined in the present study as the ratio of fatigue strength of unwelded ([S.sub.uw]) and welded ([S.sub.w]) specimens at a given fatigue life, A, and temperature.
The resulting fatigue notch factor curves for welded specimens as a function of fatigue life at different temperatures are presented in Fig.
The fatigue notch factor ranged from 1.4 to 1.8 regardless of the testing temperature.
As for the fatigue notch factor decreasing slightly with life at 50[degrees]C, no physical meaning can be extracted because the displayed trend is not based on mechanical analysis but by data fitting.
The fatigue notch factor for the welded specimen varied between 1.4 and 1.8.
investigated the fatigue crack initiation time under the constant amplitude loading by the local stress-strain method and thought that the estimated accuracy mainly depended on the fatigue notch factor [8].
In addition, according to welding configurations, the fatigue notch factors should be used and it is obtained through stress analysis or measurement.