Abstract:
A method is
presented for estimating fatigue reliability under variable
loading, which is based on load cycles-fatigue life interference
theory as well as cumulative fatigue damage analysis. The basic
opinion is that for variable loading, the increment of failure
probability produced by each load cycle is determined by the
stress level as well as the damage state at which this load
cycle applies. Contrast to "conditional reliability-equivalent
life methodology", this method calculate the equivalent cycle
numbers between different stress levels according to cumulative
fatigue damage rule but not equivalent failure probability.
Key words:
Fatigue reliability Variable
loading Damage equivalence
* This project is supported by Fok Ying Tung Education Foundation and
the Commission of National Education of China. Manuscript
received on March 1, 1994
|