ULTRASONIC FLAW DETECTOR, METHOD OF ULTRASOUND FLAW DETECTION AND METHOD OF PRODUCTION Russian patent published in 2019 - IPC G01N29/26 

FIELD: instrument engineering.

SUBSTANCE: use: for ultrasonic flaw detection. Summary of invention is that the ultrasonic flaw detector contains a grating sensor, a circuit for determining a group of elements, a calculator, a signal receiver and a generator. Grating sensor contains many piezoelectric elements, and each of the specified set of piezoelectric elements is made with the ability to transmit and receive an ultrasonic wave to and from the object being monitored. Scheme for determining the group of elements is made with the ability to choose as a group of elements several consecutive piezoelectric elements from the specified set of piezoelectric elements; to establish the initial position of the group of elements on the basis of information about the layout of the grid of the specified set of piezoelectric elements in the group of elements and based on the weight value for each of the specified set of piezoelectric elements in the group of elements, and calculate the propagation paths of the ultrasound beam from a group of elements based on the initial position and the specified angle of refraction. Transmitter is configured to calculate the delay time for each of the plurality of piezoelectric elements in a group of elements so that the ultrasound beam is configured to propagate along the propagation path. Signal receiver is adapted to receive, as detection signals, corresponding ultrasonic waves received by said plurality of piezoelectric elements. Generator is configured to generate at least one combined signal for an ultrasonic beam having a specified propagation path, based on said detection signals and a delay time.

EFFECT: technical result: provision of ultrasonic flaw detection with improved spatial resolution of defect detection.

7 cl, 23 dwg