Adopting Principles from Physics to Fatigue Crack Growth
R.C. Alderliesten (TU Delft - Group Alderliesten)
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Abstract
This chapter demonstrates how proper similitude utilizing principles from physics improves understanding of fatigue crack growth. After introducing elementary physical principles, a physical theory is outlined based on concepts separating available (driving) energy and material’s intrinsic resistance. Several lessons learned are presented, after which these lessons are extrapolated to formulating the influence plasticity has on fatigue crack growth. It is illustrated how a proper energy balance, potentially can enable prediction of fatigue crack growth without typical Paris curves.
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