SU145045A1 - Device for measuring internal stresses and strains in non-magnetic metal products - Google Patents
Device for measuring internal stresses and strains in non-magnetic metal productsInfo
- Publication number
- SU145045A1 SU145045A1 SU722813A SU722813A SU145045A1 SU 145045 A1 SU145045 A1 SU 145045A1 SU 722813 A SU722813 A SU 722813A SU 722813 A SU722813 A SU 722813A SU 145045 A1 SU145045 A1 SU 145045A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- strains
- internal stresses
- magnetic metal
- metal products
- measuring internal
- Prior art date
Links
Description
Известны устройства дл измерени внутренних напр жений и деформаций в издели х из немагнитных металлов, по методу вихревых токов, с помощью датчиков переменного тока в виде электромагнитов , устанавливаемых у поверхности испытываемого издели .Devices are known for measuring internal stresses and deformations in articles made of non-magnetic metals, using the eddy current method, using alternating-current sensors in the form of electromagnets, mounted on the surface of the test article.
Однако известные устройства имеют сложный процесс измерени .However, the known devices have a complicated measurement process.
Эти устройства указанного недостатка не имеют. Это достигаетс выполнением магнитной системы датчика в виде крестообразного четырехстержневого сердечника. Одна пара стержней сердечника снабжена намагничивающими обмотками, питаемыми переменным током, а втора пара Стержней имеет две отдельные измерительные обмотки, включенные дифференциально в цепь измерительного прибора.These devices do not have this drawback. This is accomplished by performing the magnetic system of the sensor in the form of a cross-shaped four-rod core. One pair of core cores is supplied with magnetizing windings fed by alternating current, and the second pair of Rods has two separate measuring windings that are included differentially in the circuit of the measuring device.
На чертеже изображена схема предлагаемого устройства.The drawing shows a diagram of the proposed device.
Устройство включает ге(ератор /, индуктивный датчик 2 анизотропии , фазочувствительный датчик 3, крестообразный четырехстержневой сердечник 4.The device includes ge (operator /, inductive anisotropy sensor 2, phase-sensitive sensor 3, four-core four-core.
Активна и реактивна составл ющие выходного напр жени обозначены f/a и Up.The active and reactive components of the output voltage are designated f / a and Up.
Активна составл юща Ua выходного напр жени однозначно св зана с относительной деформацией зависимостиThe active component Ua of the output voltage is uniquely associated with the relative deformation of the dependence
где /Сил - коэффициенты.where / Force - coefficients.
Ф - магнитный поток в магнитопроводе индуктивного датчика;F is the magnetic flux in the magnetic core of the inductive sensor;
и and
jj, - коэффициент Пуансона;jj, - Punch coefficient;
Q - добротность измерительной цепи на частоте намагничивающего тока;Q is the quality factor of the measuring circuit at the frequency of the magnetizing current;
е - относительна деформаци .e - relative deformation.
Так как датчик вл етс индуктивным, то он оказываетс чувствительным не только к анизотропии электропроводности, но и к ани:-;отропии магнитной проницаемости.Since the sensor is inductive, it is sensitive not only to the anisotropy of electrical conductivity, but also to ani: -; oropy of magnetic permeability.
Предмет изобретени Subject invention
Устройство дл измерени внутренних напр жений и деформаций в издели х из немагнитных металлов, по методу вихревых токов, с помощью датчиков -переменного тока в виде электромагнитов, устанавливаемых у поверхности испытываемого издели , отличающеес тем, что, с целью упрощени процесса измерени , магнитна система датчика выполнена в виде крестообразного четырехстержневого сердечника, одна пара стержней которого снабжена намагничивающими обмотками, питаемыми переменным током, а втора пара стерж .ней имеет две отдельные измерительные обмотки, включенные дифференциально в цепь измерительного прибора.Device for measuring internal stresses and deformations in products made of non-magnetic metals, using the eddy current method, using sensors-alternating current in the form of electromagnets, installed at the surface of the test product, characterized in that, to simplify the measurement process, the magnetic system made in the form of a four-core cruciform core, one pair of rods of which is supplied with magnetizing windings fed by alternating current, and the second pair of rods has two separate meters windings connected differentially in the circuit of the measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU722813A SU145045A1 (en) | 1961-03-22 | 1961-03-22 | Device for measuring internal stresses and strains in non-magnetic metal products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU722813A SU145045A1 (en) | 1961-03-22 | 1961-03-22 | Device for measuring internal stresses and strains in non-magnetic metal products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU145045A1 true SU145045A1 (en) | 1961-11-30 |
Family
ID=48300652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU722813A SU145045A1 (en) | 1961-03-22 | 1961-03-22 | Device for measuring internal stresses and strains in non-magnetic metal products |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU145045A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711766A (en) * | 1970-03-02 | 1973-01-16 | Jones & Laughlin Steel Corp | Method and apparatus for use in measuring resultant tension forces in steel strip by sequentially establishing flux paths across said strip |
| RU2518616C2 (en) * | 2011-10-26 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пермский государственный национальный исследовательский университет" | Method for measuring deformations of items from nonmagnetic materials and device for its implementation |
-
1961
- 1961-03-22 SU SU722813A patent/SU145045A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711766A (en) * | 1970-03-02 | 1973-01-16 | Jones & Laughlin Steel Corp | Method and apparatus for use in measuring resultant tension forces in steel strip by sequentially establishing flux paths across said strip |
| RU2518616C2 (en) * | 2011-10-26 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пермский государственный национальный исследовательский университет" | Method for measuring deformations of items from nonmagnetic materials and device for its implementation |
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