Prediction of Crack Initiation Life in Contact Fatigue
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
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Contact fatigue is the cause of wear and pitting damage of                      bearings and many other triboelements.  The fatigue process                     consists of crack nucleation and crack propagation, of which the                latter process is reasonably well understood.  In this study the                crack nucleation process will be modeled and the model validated                by experimental work.  The model will be based on an energy                     concept associated with repeated movement of dislocation dipoles                in a homogeneous material in response to cyclic stresses.
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[{'Code': '1441', 'Text': 'MECHANICS'}, {'Code': '1444', 'Text': 'SURFACE ENGINEERING'}, {'Code': '1445', 'Text': 'DYNAMICS & CONTROL'}, {'Code': '1446', 'Text': 'MATERIALS'}]
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