Impact of Uncertainties on Structures Damage Tolerance Parameters

<p>This research aims to enhance the understanding and management of aerospace structural integrity. Traditional fracture control methods, such as damage tolerance analysis (DTA), assume deterministic factors, considering uncertainties inherent in material properties, inspections, and operational conditions only at the final stage by applying safety factors. This research seeks to incorporate these uncertainties throughout the analysis by integrating Monte Carlo simulation with Linear Elastic Fracture Mechanics (LEFM). The objective is to investigate how varying parameters affect crack growth prediction and the effectiveness of inspection strategies. The methodology involves systematically analyzing inspection intervals, considering factors like material properties, probability of detection (POD), and other critical inputs. Cascade charts are generated to select inspection intervals that meet regulatory requirements, such as those established by the Federal Aviation Administration (FAA). The project's outcome will be a versatile code allowing for future updates and adaptations. Through this research, we anticipate enhancing aerospace structural reliability and safety.</p>

Name thesis:degree_name

Master of Science in Aerospace Engineering

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Aerospace Engineering

Year

2025

Author dc:creator

• De Bruns, Breno

• Damage Tolerance Analysis
• Linear Elastic Fracture Mechanics
• Monte Carlo Simulation
• Probability of Detection
• Crack Growth Models
• Fracture Toughness Variability
• Non-Destructive Inspection
• Inspection Interval Optimization
• Fatigue Critical Location
• Uncertainty Quantification
• Structures and Materials

Repository record dc:identifier

https://commons.erau.edu/edt/913

OAI identifier oai:identifier

oai:commons.erau.edu:edt-1946