CPC G01N 29/44 (2013.01) [G01N 29/07 (2013.01); G01N 29/11 (2013.01); G01N 2291/267 (2013.01)] | 14 Claims |
1. An estimation device, comprising:
a processor estimating a range of a weld portion in a second direction based on an intensity distribution of a reflected wave in the second direction, a plurality of ultrasonic sensors transmitting an ultrasonic wave in the second direction toward the weld portion and receiving the reflected wave, the plurality of ultrasonic sensors being arranged in a first direction crossing the second direction, and
the processor calculating a centroid position of an intensity distribution of the reflected wave in the first direction for each of a plurality of points in the second direction, and estimating a range of the weld portion in the first direction based on a plurality of the centroid positions.
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