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Air coupled ultrasonic phased array detection device

An ultrasonic phased array and air-coupling technology, which is applied to measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, and using sound waves/ultrasonic waves/infrasonic waves to analyze materials, etc., can solve the problems of single and limited application of ordinary ultrasonic probes, and achieve The effect of wide scanning range, high detection efficiency, improved signal-to-noise ratio and quantitative ability

Inactive Publication Date: 2018-02-13
日探科技(苏州)有限公司
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  • Abstract
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Problems solved by technology

A single phased array probe can cover a variety of applications, while ordinary ultrasound probes have a single limited application

Method used

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  • Air coupled ultrasonic phased array detection device
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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention. The following takes four pairs of air-coupled ultrasonic transducers on one side of the rail as an example for illustration.

[0024] see figure 1 , the specific embodiment adopts the following technical solutions: an air-coupled ultrasonic phased array detection device, which includes an ultrasonic transmitter receiver 1, a preamplifier 2, a display device 3, a multiplexer 4, an air-coupled phased array probe 5. Signal acquisition and processing unit 6, etc. Ultrasonic transmitter receiver 1 is mainly responsible for transmitting electrical pulses and receiving converted ...

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Abstract

An air-coupled ultrasonic phased array detection device, the transmission signal is sent to the air-coupled ultrasonic probe by the ultrasonic transmitter receiver, and the ultrasonic wave excited by the probe is incident into the inside of the test piece at a certain angle; The wave signal is received by the ultrasonic probe and transmitted to the signal receiver. The signal is amplified by the preamplifier and enters the data processing unit. After delay superposition and imaging processing, the imaging of the scanning result at a certain angle is completed. Scanning in multiple angles and depth directions can be completed through different emission pulse settings without moving the probe, and a wide range of detection results can be obtained from the content of the tested specimen. Because the air-coupled ultrasonic probe is used, there is no need to touch the detection surface during work, which prolongs the service life of the probe; through the parameter setting of the transmission waveform in the early stage, the length of the focal column, the size of the focus and the direction of the sound beam can be optimally controlled. It has certain advantages in terms of ratio and defect detection rate.

Description

technical field [0001] The invention relates to the technical field of ultrasonic nondestructive testing, in particular to an air-coupled ultrasonic phased array testing device. Background technique [0002] In ultrasonic testing, the detection method using couplant or liquid medium as the propagation medium is dominant. Although electromagnetic ultrasonic sensors and laser ultrasonics can be used as non-contact testing methods, compared with conventional ultrasonic technology, the beam and focus are difficult to control, and special equipment is required to meet the problems caused by acoustic excitation and reception. At the same time, it is necessary to use safety measures such as light-shielding glasses to prevent laser ultrasound and electromagnetic ultrasound from causing harm to the human body, which limits its application range. [0003] Non-contact air-coupled ultrasonic testing technology has the characteristics of non-contact, non-destructive, non-immersion, safe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/24G01N29/28
CPCG01N29/04G01N29/24G01N29/28G01N2291/023G01N2291/0289G01N2291/106
Inventor 常俊杰李光亚王焜
Owner 日探科技(苏州)有限公司
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