GB813303A - Improved electrical strain gauge - Google Patents
Improved electrical strain gaugeInfo
- Publication number
- GB813303A GB813303A GB22905/57A GB2290557A GB813303A GB 813303 A GB813303 A GB 813303A GB 22905/57 A GB22905/57 A GB 22905/57A GB 2290557 A GB2290557 A GB 2290557A GB 813303 A GB813303 A GB 813303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- specimen
- friction material
- wire
- strain gauge
- plunger
- 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
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
813,303. Strain gauges. GENERAL MOTORS CORPORATION. July 19, 1957 [Aug. 16, 1956], No. 22905/57. Class 40 (1). In an electrical strain gauge the resistance wire is covered with a friction material so that it makes frictonal contact with the surface of the specimen to be tested without being bonded thereto, and is carried by a handle which includes an indicator to show the thrust of the friction material on the specimen. In Fig. 1 the wire 40 is embedded in a channel in the lower surface 38 of a rubber block 36 and the whole coated with a friction material 50, e.g. emery dust or fine grit. The variation in current through the wire is amplified at 52 and indicated on an oscilloscope 48. The block 36 is attached to a plunger 20 the other end of which passes through a hole in a casing 16 and is spring-loaded at 22 against the rounded top of the casing. A slot 28 has marks 30 which register with a line 32 on the plunger to indicate the load on the spring and hence the thrust on the specimen. The instrument can be placed in various positions on the specimen so that numerous readings can be taken quickly. The quantity measured may be stress or may be the frequency or amplitude of vibrations.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US813303XA | 1956-08-16 | 1956-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813303A true GB813303A (en) | 1959-05-13 |
Family
ID=22163490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22905/57A Expired GB813303A (en) | 1956-08-16 | 1957-07-19 | Improved electrical strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813303A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3791205A (en) * | 1972-02-04 | 1974-02-12 | D Hooker | Potted strain gauge |
| CN102706224A (en) * | 2012-05-23 | 2012-10-03 | 西安近代化学研究所 | Friction load loading device |
| CN103322869A (en) * | 2013-05-20 | 2013-09-25 | 西安近代化学研究所 | Missile body charge friction environment simulating device |
-
1957
- 1957-07-19 GB GB22905/57A patent/GB813303A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3791205A (en) * | 1972-02-04 | 1974-02-12 | D Hooker | Potted strain gauge |
| CN102706224A (en) * | 2012-05-23 | 2012-10-03 | 西安近代化学研究所 | Friction load loading device |
| CN103322869A (en) * | 2013-05-20 | 2013-09-25 | 西安近代化学研究所 | Missile body charge friction environment simulating device |
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