Computer-implemented method for the probabilistic assessment of fatigue of component parts in the presence of manufacturing defects and relevant system

A computer-implemented method for probabilistic assessment of fatigue of component parts in a presence of manufacturing defects, comprising:

• a) importing predefined input data concerning at least one part of a component to be assessed;
• b) distinguishing at least one surface region of said at least one part from at least one internal region of said at least one part;
• c) determining a calculated volume and stress/deformation applied to said at least one surface region and to said at least one internal region;
• d) determining a distribution of defects and assigning the distribution of defects to at least one group of elements;
• e) assessing or calculating a maximum dimension of a defect and determining the maximum dimension of the defect in each surface or internal region considered;
• f) assessing or calculating a critical dimension of the defect and determining the critical dimension of the defect in each surface region or internal region by considering a fatigue strength of a material at a number of cycles under consideration, a stress/deformation applied and a position of each surface or internal region;
• g) calculating reliability of at least one of the surface or internal regions considered;
• and
• h) generating output data comprising the overall probability of damage to the part for the duration and the loads examined,
• wherein said output data comprise:
• a map of the normalized failure probability, for a qualitative and visual assessment of the more critical regions of said part;
• a quantitative map of the defect critical dimension;
• a quantitative map of the failure probability relating to any mesh intergration point;
• and
• a quantitative map of the anomalous defect critical dimensions.