SU585459A1 - Magnetic field measuring method - Google Patents
Magnetic field measuring methodInfo
- Publication number
- SU585459A1 SU585459A1 SU752193549A SU2193549A SU585459A1 SU 585459 A1 SU585459 A1 SU 585459A1 SU 752193549 A SU752193549 A SU 752193549A SU 2193549 A SU2193549 A SU 2193549A SU 585459 A1 SU585459 A1 SU 585459A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic field
- measuring method
- field measuring
- coil
- sample
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
Возбуждающий магнитный импульс катушкой 1 и принимаемый сигнал ЭДС разнесены по времени, необходимом дл прохождени ультразвука.сквозь образец 2. Следовательно, регистраци сигналов на катушке 1 осуществл етс беспреп тственно .The exciting magnetic impulse by the coil 1 and the received signal of the EMF are separated by the time required for the ultrasound to pass through the sample 2. Consequently, the signals on the coil 1 are recorded smoothly.
Математически эти процессы выража ,ютс формулойMathematically, these processes are expressed by the formula
p..eр-с p..er-s
где W - количество витков в высокочастотной катушке;where W is the number of turns in the high-frequency coil;
3 - ток в катушке;3 - current in the coil;
В - индукци внешнего магнитного пол ;B - induction of an external magnetic field;
h - зазор между высокочастотной катушкой и образцом;h is the gap between the high-frequency coil and the sample;
Н - радиус катушки; ре - акустическое сопротивление катушки.H is the radius of the coil; re is the acoustic impedance of the coil.
Исход из этой формулы видно, что ЭДС принимаемого сигнала, пропорциональна квадрату пол , которое мы из .мер ем, причем козффициент пропорциональности равенFrom this formula, it can be seen that the emf of the received signal is proportional to the square of the field that we measure, and the coefficient of proportionality is
5.2-W-3 рс5.2-W-3 RS
формула изобретени invention formula
Способ измерени магнитных полей, заключающийс в помещении образца в магнитное поле, измерении ЭДС, наводимой на его поверхности, отличающийс тем, что, с целью упрощени измерений, возбуждают электромагнитное поле, навод щее вихревые токи на поверхности образца, создава при взаимодействии с магнитным полем ультразвуковую волну, измер ют ЭДС, наводимую на поверхности образца отраженной от противоположной поверхности ультразвуковой волной, по величине измеренной ЭДС суд т о величине магнитного пол .A method of measuring magnetic fields, consisting in placing a sample in a magnetic field, measuring EMF induced on its surface, characterized in that, in order to simplify measurements, excite an electromagnetic field that induces eddy currents on the sample surface, creating an ultrasonic interaction with the magnetic field. the wave, measure the emf induced on the surface of the sample reflected by the ultrasound wave from the opposite surface, the magnitude of the measured emf judging the magnitude of the magnetic field.
Источники информации, прин тые во внимание при экспертизе:Sources of information taken into account in the examination:
1.Афанасьев Ю.В. и др. Магнитометрические преобразователи, преобразователи , установки, Энерги ,1.Afanasyev Yu.V. and others. Magnetometric converters, converters, installations, Energy,
Л., 1972, с. 192-209.L., 1972, p. 192-209.
2.Авторское свидетельствоСССР 320797, О ОПг 33/02, 1971.2. Authors certificateSSSR 320797, About OPG 33/02, 1971.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752193549A SU585459A1 (en) | 1975-12-01 | 1975-12-01 | Magnetic field measuring method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752193549A SU585459A1 (en) | 1975-12-01 | 1975-12-01 | Magnetic field measuring method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU585459A1 true SU585459A1 (en) | 1977-12-25 |
Family
ID=20638604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752193549A SU585459A1 (en) | 1975-12-01 | 1975-12-01 | Magnetic field measuring method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU585459A1 (en) |
-
1975
- 1975-12-01 SU SU752193549A patent/SU585459A1/en active
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