Composite material flaw detector based on a variety of ultrasonic techniques

Abstract

The invention discloses a composite material flaw detector based on a variety of ultrasonic techniques, which relates to a flaw detector for carrying out scanning to detect flaws of composite carbon fibers, glass fiber-reinforced plastic and honeycomb sandwich composite material parts. The composite material flaw detector comprises a conventional ultrasonic probe, a phased array ultrasonic probe, and a flaw detection host device; the conventional sonic probe adopts ultrasonic waves generated by a single piezoelectric chip to carry out scanning to detect flaws; a plurality of small piezoelectric chips are arranged according to a certain sequence to form the phased array ultrasonic probe, and scanning is carried out to detect flaws by activating ultrasonic beams emitted by the plurality of chips to interfere with one another to form a new beam; and the flaw detection host device is a main device which is integrated with an electronic system control module, a signal acquisition and processing module, a master controller and a human-machine interaction module. The electronic system control module activates the piezoelectric chips in the ultrasonic probes according to certain rule and time sequence; the signal acquisition and processing module acquires and processes signals outputted by the ultrasonic probes; and the master controller is utilized to display and set the human-machine interaction module, facilitating operation by a user.

Description

technical field [0001] The invention relates to the field of flaw detection and scanning of composite carbon fiber, glass fiber reinforced plastic, and honeycomb sandwich composite parts. The combination of conventional ultrasonic scanning and phased array ultrasonic scanning is used to perform flaw detection scanning on composite materials, and a human-computer interaction interface is used to display whether the composite material is There is damage. Background technique [0002] A composite material refers to a solid material with special properties that is selected and contains two or more components in a certain amount ratio. There are five common detection methods for flaw detection based on composite materials: eddy current testing, radiographic testing, magnetic particle testing, penetrant testing and ultrasonic testing. Ultrasonic flaw detection technology is one of the fastest developing and most widely used methods due to its advantages of fast detection speed, s...

AI Technical Summary

Problems solved by technology

The present invention solves the problems of single scan, slow detection speed, unclear display and inability to accurately determine flaw detection status in existing similar products

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