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Detection device and detection method for interface wave

A detection device and interface wave technology, which is applied to the analysis of solids using sonic/ultrasonic/infrasonic waves, can solve the problems of expensive detection equipment, low detection accuracy, and limited detection conditions, so as to improve data processing capability and speed, and easy to operate. Safety, the effect of reducing energy radiation

Inactive Publication Date: 2012-09-19
HOHAI UNIV CHANGZHOU
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  • Abstract
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Problems solved by technology

[0007] All the above-mentioned methods can achieve the purpose of detecting the interface wave in a specific situation to a certain extent, but limited by the detection conditions, there are problems such as low detection accuracy and expensive detection equipment.

Method used

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  • Detection device and detection method for interface wave
  • Detection device and detection method for interface wave
  • Detection device and detection method for interface wave

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawing. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0033] Such as figure 1 As shown, an interface wave detection device of the present invention includes: an excitation signal module 1 ; a signal transmitting and receiving module 2 ; a signal collecting module 3 ; and a signal processing and display module 4 . In order to improve the detection accuracy, the transmitting transducer and the receiving transducer of the signal transmitting and receiving module 2 used for detection are relatively thin piezoelectric ceramic transducers, and are made into a cuboid shape of 3mm×8mm×30mm, and then the transmitting The transducer and the receiving transducer array are fixed on both ends of the solid side of the interface with AB glue, and the transducer is pe...

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Abstract

The invention discloses a detection device and a detection method for an interface wave, belonging to the technical field of ultrasonic detection and analysis. Piezoelectric ceramic sheets are produced into narrow-band cuboid shapes and are used as signal emitting modules and signal receiving modules, the signal emitting modules and the signal receiving modules are fixed at both ends of a solid side of an interface and then wrapped by epoxy resin, and effects of insulating and reducing energy radiation can be realized by using the epoxy resin. The detection method comprises the following steps: a required square-wave pulse signal is generated by an excitation signal module and is used for exciting the signal emitting modules to generate an interface wave, the interface wave is spread along the interface and received by an ultrasonic signal receiving module, and then acquired waveform data are transmitted to a computer terminal via an acquisition module to be subjected to data processing and be displayed. Only the interface wave spread forwards along the interface is generated via using the method disclosed by the invention, thus being good for reducing interference and improving detection accuracy.

Description

technical field [0001] The invention relates to a detection device and a detection method of an interface wave, belonging to the technical field of ultrasonic detection and analysis. Background technique [0002] The propagation of elastic waves in the medium and their interaction with material micro-defects are of great value in the fields of ultrasonic nondestructive testing and material nondestructive evaluation. With the rapid development of acoustic technology, interface waves are widely used in material nondestructive testing. And the field of material structure property inversion. Therefore, the detection of interface waves is one of the hotspots in the field of ultrasonic testing. [0003] At present, the commonly used interface wave detection methods are as follows: [0004] (1) The ultrafast short pulse laser beam is directly incident on the interface of the double-layer medium, and the interface wave propagating along the film-base interface is excited by the el...

Claims

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Application Information

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IPC IPC(8): G01N29/04
Inventor 韩庆邦谢祖锋葛蕤李响罗强龙朱昌平单鸣雷汤一彬高远
Owner HOHAI UNIV CHANGZHOU
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