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damage rule
A closed form reliability analysis is carried out, which is based on the limit state function formulated in terms of Miner's cumulative damage rule.
      
(c) Application of a linear damage rule individually to crack initiation and crack propagation.
      
(c) Application of a linear damage rule individually to crack initiation and crack propagation.
      
Practical implementation of the double linear damage rule and damage curve approach for treating cumulative fatigue damage
      
Simple procedures are presented for treating cumulative fatigue damage under complex loading history using either the Damage Curve concept or the Double Linear Damage Rule.
      
For the Double Linear Damage Rule, analytical expressions are provided for determining the two phases of life.
      
The procedure involves two steps, each similar to the conventional application of the commonly used Linear Damage Rule.
      
No other physical properties or material constants than those normally used in a conventional Linear Damage Rule analysis are required for application of either of the two cumulative damage methods described.
      
Correction: Practical implementation of the double linear damage rule and damage curve approach for treating cumulative fatigue
      
A new cumulative damage rule for multilevel cyclic loading with mean stresses
      
Life prediction techniques of linear damage rule, double linear damage rule and damage curve approaches are applied, and results are compared with the experimental data.
      
In order to predict the fatigue life under two-stage loading by formulating a cumulative fatigue damage rule for composite materials, the fatigue process in SiC-Al and glass-fibre reinforced plastics were investigated.
      
As the damage function is strain dependent, the predictions are different from those given by the linear-damage rule.
      
A semiempirical cumulative-damage rule or modified time-fraction rule is developed, using as the starting point a power law for transient creep response.
      
In the case of variable stresses, the range-pair mainly dominates the occurrence of the slip bands, and Miner's linear cumulative damage rule holds for the accumulation of the fatigue damage for the slip-band initiation.
      
Based on the results thus obtained, an interaction damage rule proposed semi-empirically was interpreted, with regard to crack propagation.
      
The linear type of cumulative damage rule has been widely used but this could not take into account the effect of sequence of loadings.
      
The linear damage rule would require that the curves be coincident for all life level.
      
 

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