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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
      • 5. Analysis Of Damage Growth
        • 0. Analysis Of Damage Growth
        • 2. Variable-Amplitude Loading
        • 3. Small Crack Behavior
        • 4. Stress Sequence Development
        • 5. Crack Growth Prediction
          • 0. Crack Growth Prediction
          • 1. Cycle Definition and Sequencing
          • 2. Clipping
          • 3. Truncation
          • 4. Crack Shape
          • 5. Interaction of Cracks
        • 6. References
      • 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 5.5.0. Crack Growth Prediction

The analysis procedure for crack-growth prediction requires the following steps:

1.      Find baseline crack growth data (Section 5.1)

2.      Select a retardation model; select and apply an integration routine (Section 5.2)

3.      Establish a stress history and mission mix (Section 5.4)

4.      Determine the stress-intensity factor (Section 11)

Each of these steps was discussed in general terms in one of the foregoing sections.  However, there are some detail problems that need consideration.  These detail problems are the subject of Section 5.5.