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Field measurement of the acoustic nonlinearity parameter in turbine blades
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Na, Jeong K. Yost, William T. Hinton, Yolanda L. Kessel, Gregory L. |
| Copyright Year | 2000 |
| Description | Nonlinear acoustics techniques were used to measure fatigue in turbine blades in a power generation plant. The measurements were made in the field using a reference based measurement technique, and a reference sample previously measured in the laboratory. The acoustic nonlinearity parameter showed significant increase with fatigue in the blades, as indicated by service age and areas of increased stress. The technique shows promise for effectively measuring fatigue in field applications and predicting subsequent failures. |
| File Size | 656225 |
| File Format | |
| Language | English |
| Publisher Date | 2000-09-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustic Measurement Turbine Blades Acoustic Properties Samples Predictions Nonlinearity Failure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
