Inductor of eddy currents for magnetic tape testing and scanner based thereon

An eddy current induction and magnetic tape testing technology, applied in instruments, measuring devices, scientific instruments, etc., can solve problems such as the limitation of sensitivity tape testing resolution capability, increase effective resistance, etc., and achieve the effect of reducing inductive impedance, improving response, and improving sensitivity

Active Publication Date: 2012-05-09
谢尔吉·列夫伊 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sensitivity of the scanner to defects and the resolving power of the tape test are greatly limited due to the combination of the ferrite support element and the excitation conductor in the form of a coil which increases the effective resistance, especially the inductive resistance of the inductor to the excitation pulse current

Method used

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  • Inductor of eddy currents for magnetic tape testing and scanner based thereon
  • Inductor of eddy currents for magnetic tape testing and scanner based thereon
  • Inductor of eddy currents for magnetic tape testing and scanner based thereon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] Each embodiment of the proposed eddy current inductor for magnetic tape testing (see Figure 1-3 )include:

[0079] non-ferromagnetic medium support element 1, which has an unmarked longitudinal groove at the operable flat end,

[0080] A preferably flexible field conductor 2 (for example, a copper or other wire segment with a diameter preferably in the range of 0.3 mm to 0.8 mm, or a ribbon twisted from at least two wire segments which may have different diameters and chemical compositions, or other suitable flexible electrical conductor segment), which is disposed in said groove, and

[0081] Suitable means (eg conductor paths) 3 for connecting said conductor 2 to said pulsed current source 4 .

[0082] In the simplest case (see figure 1 ), the non-ferromagnetic dielectric support element 1 is formed in a single plate, the excitation conductor 2 rests on the bottom of said groove via a support spacer 5 made of elastic dielectric material.

[0083]The monolithic pl...

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PUM

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Abstract

Provided is an inductor of eddy currents for magnetic tape testing, comprising a nonferromagnetic dielectric supporting element (1) having a longitudinal groove in the operational butt end, an exciting conductor (2) shaped as wire segment and placed within said groove of said supporting element (1), and a suitable means (3) for connection of said conductor (2) to a source (4) of pulse current. Scanner for magnetic tape testing comprises of a rigid body (9); aforesaid inductor of eddy currents as such and the source (4) of pulse current, which are mounted on said body (9). These closely coupled devices have heightened sensitivity to the surface defects in electroconductive (especially nonferromagnetic) articles and secure high resolving capacity of magnetic tape testing.

Description

technical field [0001] The invention relates to magnetic tape testing for articles made of electrically conductive (in particular non-ferromagnetic) materials and induction for documenting information about defects located in the surface layer of said articles using a flexible magnetic carrier, especially magnetic tape and scanner structures. [0002] Sensors and scanners according to the invention can: [0003] For the forensic investigation of traces of mechanical damage on machine components, especially if they are at least partially concealed by dielectric protective and / or decorative coatings or dielectric impurities, for the evaluation of markings etched on automotive components for identification marks or authentication marks on jewelry or gold bars, and to detect traces of removal or alteration of the foregoing or other marks by mechanical treatment, welding, brazing, soldering or etching, etc., and [0004] Used in the mechanical industry (especially in aircraft con...

Claims

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Application Information

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IPC IPC(8): G01N27/90G01N27/9013
CPCG01N27/9006
Inventor 谢尔吉·列夫伊尤里·阿加力蒂伊万·舒姆斯基
Owner 谢尔吉·列夫伊
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