Ultrasonic imaging detecting method of mushroom type root part of blades of steam turbine and phased array energy transduction device
An ultrasonic imaging detection and steam turbine blade technology, which is used in measurement devices, solids analysis using sonic/ultrasonic/infrasonic waves, and material analysis using sonic/ultrasonic/infrasonic waves. To solve problems such as detection, to achieve the effects of improved signal-to-noise ratio and sensitivity, good beam accessibility, and intuitive imaging
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[0028] The steam turbine blade fungal root 3 ultrasonic imaging detection method of the present invention comprises the following steps:
[0029] The first step: choose a phased array detector with imaging function to connect with the phased array transducer 1, the working frequency range of the phased array detector is 1MHz-10MHz, the horizontal linearity error is not more than 2%, and the vertical linearity The error is not greater than 8%; the phased array transducer 1 is inverted T-shaped, with a length of 28mm, a width of 15mm, and a height of 24mm. The center frequency of the phased array transducer 1 is 5MHz-10MHz, and the number of array elements is 16. -32 pieces, the array element spacing is 0.5mm-1mm, the array element length is 8mm-10mm, the array elements composed of rectangular piezoelectric ceramic wafers are arranged in a linear form parallel to the width of the transducer base, embedded in the phased array In the matrix of the transducer 1, the deflection angl...
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