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DTD Handbook

Handbook for Damage Tolerant Design

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    • Sections
      • 1. Introduction
      • 2. Fundamentals of Damage Tolerance
      • 3. Damage Size Characterizations
      • 4. Residual Strength
        • 0. Residual Strength
        • 1. Introduction
        • 2. Failure Criteria
        • 3. Residual Strength Capability
        • 4. Single Load Path Structure
          • 0. Single Load Path Structure
          • 1. Abrupt Fracture
          • 2. Tearing Fracture
        • 5. Built-Up Structures
        • 6. References
      • 5. Analysis Of Damage Growth
      • 6. Examples of Damage Tolerant Analyses
      • 7. Damage Tolerance Testing
      • 8. Force Management and Sustainment Engineering
      • 9. Structural Repairs
      • 10. Guidelines for Damage Tolerance Design and Fracture Control Planning
      • 11. Summary of Stress Intensity Factor Information
    • Examples

Section 4.4.0. Single Load Path Structure

For a single load path structure, the only means to protect the safety is to prevent the damage growth from degrading the strength of the structure to less than the design limit load.  This applies for all structures classified as slow crack growth, regardless of the type of construction (such as single load path or multiple load path).  The residual strength capability of the structure depends mainly on the material’s resistance to fracture.