Component destruction evaluation apparatus, component destruction evaluation method, and computer program

摘要

Assuming that the distribution function of the inclusion size √area follows the general Pareto distribution, the stress of the acting stress in each of the virtual cells having the virtual unit volume V0 in which the region of the machine part is evenly partitioned so as to include one inclusion. The probability that the stress amplitude σp exceeds the stress amplitude σw of the fatigue strength (the fatigue strength excess probability pV0 of the virtual cell) is derived. Then, from this fatigue strength excess probability pV0, the probability that the stress amplitude σp of the applied stress exceeds the stress amplitude σw of the fatigue strength (mechanical component fatigue strength excess probability pfV) is derived in at least one virtual cell.