FIELD: machine engineering.
SUBSTANCE: in the method for determining the stress condition of a high-pressure turbine blade, including the determination of surface residual stresses, volumetric residual stresses, calculation of the total stress condition energy from the action of surface and volumetric residual stresses, and metallographic study of the material structure, determination of surface residual stresses, volumetric residual stresses and metallographic study of the material structure are carried out on one blade. The surface residual stresses are determined on samples of rectangular cross-section, cut along the axis of the airfoil from the output edge to the central axis both on the side of the back and on the side of the trough, the volumetric residual stresses are determined on samples of rectangular shape with strain gauges installed on them, cut from the input edge to the central axis both on the side of the back and on the side of the trough, the metallographic study of the material structure is carried out in the cross section of the remaining part of the blade airfoil, and the stress condition energy is calculated by adding the quantities of surface and volumetric residual stresses, measured by the depth of their occurrence.
EFFECT: increased accuracy and reliability of the determination.
2 dwg, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SAMPLE FOR DETERMINING RESIDUAL STRESS IN HOLLOW BLADE OF TURBINE BLADE | 2015 |
|
RU2600367C1 |
| IMPELLER WHEEL OF THIRD STAGE OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VARIANTS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
|
RU2630921C1 |
| METHOD OF SURFACE TREATMENT OF PRODUCTS OF HEAT RESISTING ALLOYS | 2010 |
|
RU2462516C2 |
| ROTOR FORTH STAGE IMPELLER OF HIGH-PRESSURE COMPRESSOR (HPC) OF TURBOJET ENGINE (VERSIONS), HPC ROTOR IMPELLER DISC, HPC ROTOR IMPELLER BLADE, HPC ROTOR IMPELLER BLADE RING | 2016 |
|
RU2630919C1 |
| HIGH-PRESSURE TURBINE ROTOR OF A GAS TURBINE ENGINE (VERSIONS) | 2018 |
|
RU2691868C1 |
| METHOD OF TURBOMACHINE MANUFACTURE AND GRINDING MACHINE FOR ITS EMBODIMENT | 1996 |
|
RU2162782C2 |
| FIFTH STAGE IMPELLER WHEEL OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VERSIONS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
|
RU2630920C1 |
| ROTOR SIXTH STAGE IMPELLER OF HIGH-PRESSURE COMPRESSOR (HPC) OF TURBOJET ENGINE (VERSIONS), HPC ROTOR IMPELLER DISC, HPC ROTOR IMPELLER BLADE, HPC ROTOR IMPELLER BLADE RING | 2016 |
|
RU2630922C1 |
| IMPELLER WHEEL OF SEVENTH STAGE OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VERSIONS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
|
RU2630923C1 |
| SECOND STAGE IMPELLER WHEEL OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VARIANTS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
|
RU2636998C1 |
