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Lambda's patented Fatigue Design Diagram (FDD) analysis provides quantitative determination of the optimal compressive residual stress distribution in a component necessary to alleviate typical damage conditions.

Lambda Technologies' Fatigue Design Diagram (FDD) enables:

• Prediction of fatigue behavior in the presence of damage.
• Prediction of fatigue behavior in the presence of both damage and RS, and more importantly.
• Provides a design guideline to determine the compressive RS magnitude needed to achieve a target damage tolerance.

As an additional benefit, the use of the FDD allows reduced use of excess material which is a common practice in traditional "over" design. This not only provides a significant weight savings in the part but also serves to lower production costs. Furthermore, the FDD method provides a cost savings in view of the fact that with enhanced service life it will no longer be necessary to maintain and replace parts as frequently, thereby reducing labor as well as costly aircraft and machine downtime.