Several non-destructive testing (NDT) methods are employed to assess the condition of a TBM cutterhead without causing damage. These methods help identify wear, cracks, and other defects that can affect its performance. Ultrasonic testing (UT) is used to detect internal flaws and measure the thickness of the cutterhead components. It works by transmitting high-frequency sound waves through the material and analyzing the reflected waves. Changes in the wave pattern indicate the presence of flaws or variations in thickness. Magnetic particl....
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