# AFGROW | DTD Handbook

## Handbook for Damage Tolerant Design

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- Sections
- 1. Introduction
- 0. Introduction
- 1. Historical Perspective on Structural Integrity in the USAF
- 2. Overview of MIL-HDBK-1530 ASIP Guidance
- 3. Summary of Damage Tolerance Design Guidelines
- 0. Summary of Damage Tolerance Design Guidelines
- 1. Summary of Guidelines
- 2. Design Category
- 3. Inspection Categories and Inspection Intervals
- 4. Initial Damage Assumptions
- 5. Residual Strength Guidelines
- 6. Required Periods Of Safe Damage Growth
- 7. Illustrative Example Of Guidelines
- 0. Illustrative Example Of Guidelines
- 1. Slow Crack Growth Structure
- 2. Fail Safe Structure
- 0. Fail Safe Structure
- 1. In-Service Inspection Consideration
- 2. Initial Flaw Considerations
- 3. In-Service Flaw Assumptions Following Inspection
- 4. Adjacent Structure Damage Following the Failure of the Major Load Path
- 5. Analysis of Intact Structure–Residual Strength Guidelines and Damage Growth Limits
- 6. Analysis of Intact Structure (Alternate Requirement)
- 7. Discussion of Intact Structure Analysis
- 8. Analysis of Remaining Structure Subsequent to Load Path Failure
- 9. Derivation of Residual Strength Load
- 10. Incremental Damage Growth Da
- 11. Alternative-Analysis of Remaining Structure Subsequent to Load Path Failure
- 12. Summary and Comments

- 4. Sustainment/Aging Aircraft
- 5. References

- 2. Fundamentals of Damage Tolerance
- 0. Fundamentals of Damage Tolerance
- 1. Introduction to Damage Concepts and Behavior
- 2. Fracture Mechanics Fundamentals
- 3. Residual Strength Methodology
- 4. Life Prediction Methodology
- 5. Deterministic Versus Proabilistic Approaches
- 6. Computer Codes
- 7. Achieving Confidence in Life Prediction Methodology
- 8. References

- 3. Damage Size Characterizations
- 4. Residual Strength
- 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

- 1. Introduction
- Examples

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