Patent ID: 9719966
Date: 2017-08-01
CPC Classifications: G01N

Claim:
1. An ultrasonic flaw detecting apparatus for detecting an internal defective state at a bend of a laminated part made of composite materials, comprising: an ultrasonic transducer transmitting and receiving ultrasonic waves; and a controlling unit configured to detect and process the internal defective state at the bend of the laminated part according to flaw detecting signals from the ultrasonic transducer, wherein: the ultrasonic transducer includes the controlling unit successively carries out, for each oscillator group of the plurality of oscillators in which each oscillator group is formed of a row of the oscillators extending in the width direction, switching between the oscillators in the oscillator group to transmission and reception oscillators by turns in the width direction according to a preset transmission/reception pattern and processing a received signal from the reception oscillator according to an aperture synthesis method such that the transmission oscillator in each oscillator group sequentially moves in the row of the respective oscillator group along the width direction, and in the preset transmission/reception pattern, two consecutive reception oscillators are adjacent to the transmission oscillator on each side of the transmission oscillator in the width direction throughout the preset transmission/reception pattern, one of the two consecutive reception oscillators on each side being immediately adjacent to the transmission oscillator.