Turbine blade testing device and testing method thereof
AssigneeKabushiki Kaisha Toshiba
InventorsSetsu Yamamoto, Takahiro Miura, Jun Semboshi, Makoto Ochiai, Masato Murakami, Hiroshi Nomura, Takuya Fuchi
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Abstract
According to one embodiment, a testing device of a turbine blade includes: a non-compressive elastic medium brought into close contact with a platform of the turbine blade in a state fastened to a turbine rotor; a probe which has piezoelectric elements arranged in an array and transmits ultrasound waves toward a fastening portion of the turbine blade through the elastic medium and receives echo waves; and a display portion for imaging an internal region of the fastening portion on the basis of the echo waves and displaying the same.
Claims6
A testing device of a turbine blade comprising:
- an elastic medium configured to contact with a platform of the turbine blade in a state fastened to a turbine rotor;
- a probe, comprising piezoelectric elements arranged in an array, configured to transmit ultrasound waves toward a fastening portion of the turbine blade through the elastic medium contacting with the platform and to receive echo waves of the ultrasound waves;
- an accommodating chamber configured to accommodate the probe and the elastic medium and further configured to hold the probe contacting with the elastic medium that is in contact with the platform;
- and
- a display configured to image an internal region of the fastening portion on the basis of the echo waves, wherein the accommodating chamber comprises:
- an opening from which the elastic medium is configured to contact with the platform;
- a first support, extending in a radial direction of the turbine rotor, configured to abut with the turbine blade;
- a second support, extending in a rotation axis direction of the turbine rotor, configured to abut with the turbine blade;
- and
- a position adjuster configured to adjust a position of the probe in the accommodating chamber.
A testing method of a turbine blade, comprising
- preparing a probe, an elastic medium, and an accommodating chamber, the accommodating chamber comprising:
- an opening;
- a first support extending in a radial direction of the turbine rotor;
- a second support extending in a rotation axis direction of the turbine rotor,
- accommodating the probe and the elastic medium in the accommodating chamber so that the elastic medium is placed adjacent to the opening;
- abutting the first and the second support with the turbine rotor so that the elastic medium contacts with a platform of the turbine blade in a state fastened to a turbine rotor through the opening;
- transmitting ultrasound waves from a probe toward a fastening portion of the turbine blade through the elastic medium;
- receiving echo waves of the transmitted ultrasound waves by the probe;
- and
- imaging an internal region of the fastening portion on the basis of the echo waves.
Dependencies are inferred from the claim text.