Fatigue and Damage Tolerance Skill Purpose Provide specialized fatigue life prediction and damage tolerance assessment capabilities for airworthiness certification and structural integrity management. Capabilities - S-N and strain-life analysis - Crack growth analysis (NASGRO, AFGROW) - Inspection interval determination - Damage tolerance substantiation - Spectrum loading analysis - Mean stress correction methods - Multi-site damage assessment - Certification evidence generation Usage Guidelines - Use appropriate fatigue methodology based on structural criticality - Select material data from…