| Author | Search for: Pishva, M. R.; Search for: Koul, A. K.1; Search for: Bellinger, N. C.1; Search for: Terada, T.1 |
|---|
| Affiliation | - National Research Council of Canada. NRC Institute for Aerospace Research
|
|---|
| Format | Text, Article |
|---|
| Subject | Disks--Fatigue; Fracture Mechanics; Damage Tolerance; Inconel 718; Life Prediction; Safe Inspection Intervals; Service-Induced Damage; Gas Turbines |
|---|
| Abstract | The damage tolerance-based life prediction concepts proposed for gas turbine components are explained. The results of a demonstration program carried out to calculate the Safe Inspection Intervals (SIIs) for new and service-exposed turbine discs are presented. Effects of service exposure on the microstructure and fatigue crack growth rate of Inconel 718 discs are studied in detail. It is suggested that there may be considerable risk involved in assuming that crack-free components can be used repeatedly beyond 'safe life limit' for several SIIs, unless the SII value is continually updated, taking into account the deterioration of microstructure with increasing service. |
|---|
| Publication date | 1989-03-01 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21275991 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | a839b4a9-763a-4270-b3f4-33b235bef5de |
|---|
| Record created | 2015-08-31 |
|---|
| Record modified | 2020-03-17 |
|---|
