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Southwest Research Institute (SwRI) developed a probabilistic-based damage tolerance computer program called DARWIN™ (Design Assessment of Reliability With INspection). DARWIN™ was developed under the direction of the FAA and in collaboration with four major gas turbine manufacturers. This software integrates finite element stress analysis results, fracture mechanics-based life assessment for low-cycle fatigue material anomaly data, probability of anomaly detection, and inspection schedules to predict the probability of fracture as a function of applied operating cycles.
Gas turbine industry experience has shown that the occurrence of material and manufacturing anomalies can potentially degrade the structural integrity of high-energy rotors. Conventional rotor life management methodology does not explicitly address the occurrence of these types of anomalies.
For more information, visit the DARWIN™ home page.
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| Materials Engineering Department | Mechanical & Materials Engineering Division | SwRI Home | |
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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions. |
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March 25, 2008 |
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