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Method and device for ultrasonic testing of a turbine blade for incipient cracks in the blade base
Method and device for ultrasonic testing of a turbine blade for incipient cracks in the blade base
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机译：用于涡轮叶片的超声测试的方法和装置，以检查叶片基座中的初期裂纹
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摘要
The invention relates to a method for ultrasonic testing of a turbine blade (2) for incipient cracks (4) in the blade base (1). According to the method, the planar end face of the blade base (1) flush-fitted in the wheel disc (3) is insonified with ultrasonic waves at a defined angle. To this end, an ultrasonic transducer (10) is arranged in a test template (5) which has a planar contact face which can be contacted with the planar end face of the blade base (1). The transducer (10) is arranged at an angle to the contact face of the test template (5) and is mounted so as to be pivotable about an axis (12) which runs perpendicular to the contact face of the test template. Arranged on the contact face of the test template (5) there are an end-stop body (8), two pins (7) and retaining magnets (6) for locking the test template (5) onto turbine blades (2) and wheel disc (3). IMAGE
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