Giant magnetostriction transducer with function of ultrasonic guided wave excitation and receiving at same end

A giant magnetostrictive and ultrasonic technology, which is applied in the generation of ultrasonic/sonic/infrasonic waves and the detection of response signals, which can solve problems such as time-consuming

Inactive Publication Date: 2012-07-04
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Routine non-destructive testing of these large structures is time consuming simply because the probe scans the structure point by point

Method used

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  • Giant magnetostriction transducer with function of ultrasonic guided wave excitation and receiving at same end
  • Giant magnetostriction transducer with function of ultrasonic guided wave excitation and receiving at same end

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Embodiment Construction

[0009] Such as figure 1 A giant magnetostrictive transducer with ultrasonic guided wave excitation and reception at the same end as shown, including an end cover 1, a disc spring 2, a permanent magnet 3, a damping element 4, a giant magnetostrictive element 5, and a base 6 , spiral coil skeleton 7, self-lubricating bearing 8, spiral coil 9; base 6 is cylindrical, and the outer side of the bottom end of base 6 is radially extended with annular protrusions, and the central part of the front end of base 6 is axially provided with cylindrical The groove 10; the giant magnetostrictive element 5, the damping element 4 and the permanent magnet 3 are cylindrical; the giant magnetostrictive element 5 is placed in the bottom end of the cylindrical groove 10 and fixed with the base 6 through ultrasonic gel, and the damping element 4 is placed on the front end of the giant magnetostrictive element 5 and is in contact with the front end of the giant magnetostrictive element 5, the permanen...

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PUM

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Abstract

The invention creatively discloses a giant magnetostriction transducer with the function of ultrasonic guided wave excitation and receiving at the same end, which includes an end cover, a disc spring, a permanent magnet, a damping element, a magnetostriction element, a base, a solenoid frame, a self-lubricating bearing and a solenoid, wherein the base serves as a reference; the magnetostriction element, the damping element and the permanent magnet are fixed in a cylindrical groove of the base respectively; and the front end of the base and the end cover form a pretension mechanism for pretension through the disc spring. Through adopting the structure, the giant magnetostriction transducer with the function of ultrasonic guided wave excitation and receiving at the same end has long detection distance, is simple to operate, is highly sensitive, and is suitable for the on-line detection of rotary machinery, does not influence the operation of machinery, and is an ultrasonic guided wave transducer based on the magnetostriction effect.

Description

technical field [0001] The invention relates to a transducer mechanism, an ultrasonic guided wave transducer based on a magnetostrictive effect, and is a new detection device in the field of automation technology. Background technique [0002] Non-destructive testing technology is one of the indispensable testing methods in the manufacture and use of modern industrial products, and is widely used in various industrial fields. Some special structures, such as tubes, plates, etc., are frequently encountered detection objects in nondestructive testing. Routine non-destructive testing of these large structures is particularly time-consuming, simply because the probe needs to scan the structure point by point. Contents of the invention [0003] The present invention aims at the above problems and the defects of the above-mentioned technical solutions. The technical problem to be solved by the present invention is to provide a magnetically induced Ultrasonic guided wave transd...

Claims

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Application Information

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IPC IPC(8): G01N29/34G01N29/36
Inventor 王晓煜吴晶晶谭晓东
Owner DALIAN JIAOTONG UNIVERSITY
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