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Substantial improvements have been made in the accuracy of component fatigue life predictions through the incorporation of cyclic stress-strain concepts in fatigue analysis procedures. This paper describes recent advances in material characterization, complex history analysis and notch analysis, and their application in computer-aided fatigue analysis procedures. A simplified strain-based approach, which offers conceptual and computational advantages, is then described and shown to be useful in many ground vehicle problems. Finally, several applications of these techniques in engineering design practice are presented.

An overview of the basic concepts involved in performing a fatigue analysis is presented as an introduction to a series of specialized papers dealing with the development of fatigue information and its use in engineering design. Following a brief account of the fatigue process and failure definition, methods for describing fatigue resistance are discussed. Cumulative damage concepts based on fatigue life curves are then demonstrated.

An overview of the current status and emerging trends in durability-related technologies is presented as an introduction to a series of papers covering applications of durability analysis in design. Problems of information management associated with technology integration are discussed along with the probable impact of new design tools on product development and validation.