SU954866A1 - Magnetic noise checking method - Google Patents
Magnetic noise checking method Download PDFInfo
- Publication number
- SU954866A1 SU954866A1 SU802989881A SU2989881A SU954866A1 SU 954866 A1 SU954866 A1 SU 954866A1 SU 802989881 A SU802989881 A SU 802989881A SU 2989881 A SU2989881 A SU 2989881A SU 954866 A1 SU954866 A1 SU 954866A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- noise
- control
- layer
- generator
- spectrum
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
, 1 . , one .
Изобретение относитс к средствам магнитошумового контрол ферромагнитных материалов и может быть использовано дл дефектоскопии сварных соединений и проката.The invention relates to magnetic noise control of ferromagnetic materials and can be used for the inspection of welded joints and rolled products.
Известен способ магнитошумового контрол ферромагнитных сталей, заключающийс в том, что образец стали перемагничивают линейно измен ющимс магнит ным полем и регистрируют возникающие ,Q при этом магнитные шумы, по которым определ ют зернистость структуры стали 1. . ..The known method of magnetic noise control of ferromagnetic steels is that the steel sample is re-magnetized with a linearly varying magnetic field and the resulting Q, magnetic noise, which determines the grain size of the steel 1 structure, is recorded. ..
Однако достоверность контрол этим способом не достаточна , так как спектр магнитных шумов не всегда соответствует характеру дефектов в структуре стали.However, the reliability of control by this method is not sufficient, since the spectrum of magnetic noise does not always correspond to the nature of defects in the steel structure.
Наиболее близким к йзобретешю вл етс способ магнитошумового контрол , заключающийс в том, что объект контро- 20 л перемагничивают накладным электретмагнитом и регистрируют спектр возникающих при этом магнитоакустических шумов, по которому определ ют состо - .The closest to the invention is the method of magnetic noise control, which consists in the fact that the object of the control 20 lm reversal is overlaid by an applied electretmagnet and the spectrum of the magnetoacoustic noise arising in the process is determined.
ние структур. материала объекта по заранее вы вленным коррел ционным зависимост м 2..structure the material of the object according to previously determined correlation dependences m 2.
Однако точность послойного контрол структуры материала недостаточна , так как. перемагничивание привод т синусоидальным полем, а врем регистрашга рпектра шумов не стробируют.However, the accuracy of layer-by-layer control of the structure of the material is insufficient, since. The magnetization reversal is driven by a sinusoidal field, and the time of the register of the noise spectrum is not strobed.
Цель изобретени - повышение точности послойного контрол структуры материала ..The purpose of the invention is to improve the accuracy of layer-by-layer control of the structure of the material ..
Эта цель достигаетс тем, что перемагничивание провод т линейно измен к шимс магнитным полем, а при регистрации спектра стробируют врем , соответ ствующее интервалу изменени указанного пол , создак дего в заданном слое объекта магнитоакустические шуМы.This goal is achieved by the fact that the magnetization reversal is carried out linearly by changing the magnetic field, and when registering the spectrum, the time corresponding to the change interval of the specified field is strobe; the magnetoacoustic noise is created in a given layer of the object.
На чертеже приведена блок-схема устройства дл реализации предлагаемого способа..The drawing shows a block diagram of a device for implementing the proposed method ..
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802989881A SU954866A1 (en) | 1980-10-08 | 1980-10-08 | Magnetic noise checking method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802989881A SU954866A1 (en) | 1980-10-08 | 1980-10-08 | Magnetic noise checking method |
Publications (1)
Publication Number | Publication Date |
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SU954866A1 true SU954866A1 (en) | 1982-08-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802989881A SU954866A1 (en) | 1980-10-08 | 1980-10-08 | Magnetic noise checking method |
Country Status (1)
Country | Link |
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SU (1) | SU954866A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2692977A1 (en) * | 1992-06-26 | 1993-12-31 | Aerospatiale | Non destructive testing method of a weld. |
-
1980
- 1980-10-08 SU SU802989881A patent/SU954866A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2692977A1 (en) * | 1992-06-26 | 1993-12-31 | Aerospatiale | Non destructive testing method of a weld. |
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