... Transformation of defects into fatigue cracks; the role of Kt and defect scale on fatigue life of non- pristine components A. Cinia, P.E. Irvinga,*aDepartment of Materials, Cranfield University, College ... models. Life data and models wereused to develop a unified approach for prediction of life of non- pristine components, incorporating effects of defect geometry.Keywords: Fatigue, notch, scracthes, ... traditional elastic fracture mechanics. If the component is regarded as pristine a non- conservative service life may result. The questions to be addressed are: 1) Definition of the damage condition...