Analysis of Strain Gage Rosette Data for Fatigue Life Predictions 922148

Field data measurements of structural behavior are often made for use in the evaluation of component or vehicle durability. Traditional life prediction methods have utilized uniaxial fatigue concepts for life estimation. Much recent work has been undertaken to extend the life prediction methods to multiaxial strain states. The following work discusses issues related to the analysis of strain gage rosette data for use in structural durability assessment. In particular, methods for identification of critical orientation in multiaxial cyclic load analysis are evaluated.


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