A single-sided air-coupled ultrasonic scanning imaging device

An imaging device and ultrasonic scanning technology, applied in measurement devices, analysis of solids using sonic/ultrasonic/infrasonic waves, and material analysis using sonic/ultrasonic/infrasonic waves, etc. It can achieve the effect of high applicability, improved applicability, and convenient focusing.

CN104865316BInactive Publication Date: 2017-12-05TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a single-side air-coupled ultrasonic scanning imaging device, which is used to detect defects inside objects. The device includes a probe scanning frame, a pair of plane transmitting probes and a pair of focusing receiving probes arranged on the same side of the probe scanning frame , a preamplifier, a pulse transmitter receiver, a signal acquisition and processing module and a computer, the pulse transmitter receiver is connected to a pair of planar transmitter probes, and the pulse transmitter receiver is connected to a pair of focused receiver probes through the preamplifier connected, and also connected to the computer through the signal acquisition and processing module, and the probe scanning frame is respectively connected to the computer, the pulse transmitter receiver and the signal acquisition and processing module. Compared with the prior art, the invention has the advantages of convenient focusing, high emission efficiency, high recognition resolution and the like.
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Description

technical field

[0001] The invention relates to the field of ultrasonic detection, in particular to a single-side air-coupled ultrasonic scanning imaging device. Background technique

[0002] Ultrasonic testing is one of the five conventional non-destructive testing, because it has a series of advantages such as high sensitivity, strong penetrating power, good directivity, fast detection speed, low cost, relatively simple equipment, and harmless to the human body, it has been widely used in the industrial field. a wide range of applications. The conventional ultrasonic testing method is the contact type, that is, water or other liquid must be used as an acoustic coupling agent between the ultrasonic probe and the sample to be tested. On the one hand, the use of couplant increases the influence of human factors on the results, and on the other hand, it is difficult to meet the needs of industrial automation production and quality control. Air-coupled ultrasonic testing is a...

Examples

Embodiment

[0036] Such as figure 1 As shown, a single-sided air-coupled ultrasonic scanning imaging device is used to detect defects inside objects, including a probe scanning frame 1, a pair of planar transmitting probes and a pair of focusing receiving probes set on the same side of the probe scanning frame 1 , preamplifier 2, pulse transmitter receiver 3, signal acquisition and processing module 4 and computer 5, pulse transmitter receiver 3 is connected with a pair of planar transmitter probes, and pulse transmitter receiver 3 is connected with a pair of focusing receivers through preamplifier 2 The probe is connected, and is also connected with the computer 5 through the signal acquisition and processing module 4, the probe scanning frame 1 is connected with the computer 5, the pulse transmitter receiver 3 and the signal acquisition and processing module 4 respectively, and the detection software based on the MATLAB system in the computer 5 is used In multi-channel data acquisition,...