GB866202A - An electromagnetic extensometer - Google Patents
An electromagnetic extensometerInfo
- Publication number
- GB866202A GB866202A GB28918/57A GB2891857A GB866202A GB 866202 A GB866202 A GB 866202A GB 28918/57 A GB28918/57 A GB 28918/57A GB 2891857 A GB2891857 A GB 2891857A GB 866202 A GB866202 A GB 866202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pick
- extension
- members
- measuring
- sept
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/127—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using inductive means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/125—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using magnetostrictive means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
866,202. Measuring dimensional changes. VYZKUMNY A ZKUSEBNI LETECKY USTAV. Sept. 13, 1957 [Sept. 20, 1956], No. 28918/57. Class 40 (1). An electromagnetic extensometer comprises coplanar connecting-members attached by strips to the material under test and also connected to the two ends of a ferromagnetic body so that extension of the material produces torsional stress in the body, means for applying an alternating magnetic field to the body and a pick-up circuit to detect deformation of the magnetic field. In Figs. 1 and 2 sockets 2 in the material are joined by strips 3 which are attached by members 1 to the ends of a tubular ferromagnetic body 4 in the manner shown in Fig. 2. The body is magnetized by the current in a toroidal winding 5 and in the absence of stress there is no pick-up in the coil 6, so that a voltmeter across the latter will measure the amount of torsional stress in the body and hence the extension of the material. The magnetizing and pick-up windings may be interchanged. By suitable modification of the construction the device can be used for measuring shear stresses in a material, and hence torsional strains. Applications of the device are mentioned, and in particular it may be used for measuring temperature if the expansions of the material and connecting-members are known and different. Alternatively the readings of extension can be corrected for temperature by using a comparison instrument. Specification 837,288 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS866202X | 1956-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB866202A true GB866202A (en) | 1961-04-26 |
Family
ID=5456303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28918/57A Expired GB866202A (en) | 1956-09-20 | 1957-09-13 | An electromagnetic extensometer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB866202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2187843A (en) * | 1986-03-12 | 1987-09-16 | Turbomeca | Process and apparatus for measuring the couple transmitted by a shaft subject to variations in temperature |
-
1957
- 1957-09-13 GB GB28918/57A patent/GB866202A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2187843A (en) * | 1986-03-12 | 1987-09-16 | Turbomeca | Process and apparatus for measuring the couple transmitted by a shaft subject to variations in temperature |
| GB2187843B (en) * | 1986-03-12 | 1990-01-17 | Turbomeca | Process and apparatus for measuring the couple transmitted by a shaft subject to variations in temperature |
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