ESDU 06011:2013

$89.05

Spectral Methods for the Estimation of Fatigue Life

Published By	Publication Date	Number of Pages
ESDU	2013-04	NA

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Category: ESDU

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ESDU 06011 is the third in a series of Items devoted to fatigue
damage under random loading. This Item considers spectral methods
for the estimation of fatigue life. It is to be applied in cases
where the power spectral density function of stress is known.
Several methods are considered. These include: Wirsching and Light,
Chaudhury and Dover, Dirlik, Ortiz and Chen, Larsen and Lutes, and
Zhao and Baker. A program for fatigue life estimation is included.
The program is used to estimate the spectral moments of the power
spectral density functions of the signal, the number of peaks per
second and the number of upward zero crossings per second in the
time series. Fatigue life is estimated, using the method of Dirlik.
Examples illustrating the use of the program are given. The
spectral moments of the response of single degree of freedom
systems to white noise are described and methods for their
estimation are outlined. Other Items in the series are concerned
with cycle counting and crack propagation methods for the
estimation of fatigue life.

The Items in the series are:

Fatigue Damage and Life under Random Loading – ESDU 06009,

Cycle Counting Methods for the Estimation of Fatigue Life – ESDU
06010,

Spectral Methods for the Estimation of Fatigue Life – ESDU 06011
(this Item),

Crack Propagation Methods for the Estimation of Fatigue Life –
(ESDU 07012).