CN105698744B - A kind of high temperature static strain gauge with dummy strain gauge - Google Patents
A kind of high temperature static strain gauge with dummy strain gauge Download PDFInfo
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- CN105698744B CN105698744B CN201511027345.7A CN201511027345A CN105698744B CN 105698744 B CN105698744 B CN 105698744B CN 201511027345 A CN201511027345 A CN 201511027345A CN 105698744 B CN105698744 B CN 105698744B
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- strain gauge
- dummy
- sensitive grid
- strain
- sprayed coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention belongs to high temperature strain measurement technical fields, disclose a kind of high temperature static strain gauge with dummy strain gauge.Work strain meter sensitive grid, dummy strain gauge sensitive grid and the insulating layer that the present invention uses are located in protective layer；Work strain meter sensitive grid is between lower floor's sprayed coating and upper strata sprayed coating；Dummy strain gauge sensitive grid is fixed on by two spray strips on the sprayed coating of upper strata, consistent with work strain meter sensitive grid position and direction；Insulating layer is placed on above two spray strips, and upper surface and the protective layer of insulating layer fit closely；Work strain meter lead, dummy strain gauge lead are located at work strain meter sensitive grid, the end of dummy strain gauge sensitive grid respectively, are drawn from the preformed hole of protective layer.Using the thermal output of the output compensation work strain meter of dummy strain gauge, eliminate strain gauge thermal output influences the present invention, improves high temperature static strain measurement result precision and reliability；Thermal output calibration link is reduced, makes the simpler convenience of high temperature static strain measurement.
Description
Technical field
The present invention relates to high temperature strain measurement technical fields, and in particular to a kind of high temperature static strain with dummy strain gauge
Meter.
Background technology
High temperature strain gauge measurement technology is the most important technological means of researching high-temperature structure member mechanical behavior.
Current strain electrical measurement measurement temperature is most of all below 300 DEG C, 300 DEG C or more particularly 600 DEG C~1000
DEG C high temperature strain measurement field, high temperature strain gauge must take into consideration elimination since its thermal output is big when doing static strain measurement
Thermal output influences.
Now mostly using the progress modified curve amendment method of thermal output after first progress thermal output calibration；Strain gauge steady state thermal is defeated
Going out calibration can be easier to realize in resistance furnace, but the temperature ramp that the thermal output of strain gauge is experienced with strain gauge has
Close, particularly under the environment that is rapidly heated stable state thermal output and transient state thermal output replaced there are bigger difference with stable state thermal output
Transient state thermal output, which carries out thermal output amendment, can bring large error, therefore strain measurement must carry out wink under the environment that is rapidly heated
State thermal output is demarcated；And the device and method for carrying out transient state thermal output calibration are complicated, the difficulty for demarcating instantaneous thermal output is larger.
During actual high temperature strain measurement, line build-out method can also be used, which to eliminate thermal output, to be influenced, but is required during arrangement dummy strain gauge
Dummy strain gauge is arranged in the place that with work strain meter there is identical temperature field not experience strain but, is typically hard to find so
Pieces of cloth position.
When eliminating thermal output and influencing, it is larger to demarcate the difficulty of instantaneous thermal output, arrangement compensation for high temperature static strain measurement
It is difficult to find that during strain gauge and only experiences the pieces of cloth position that temperature does not experience strain, strained meter thermal output is caused to influence data error
Greatly, measurement result precision and reliability are seriously affected.
The content of the invention
To solve the problems, such as above-mentioned technology, the present invention proposes a kind of high temperature static strain gauge with dummy strain gauge.
The technical solution adopted by the present invention is as follows：
A kind of high temperature static strain gauge with dummy strain gauge, including work strain meter sensitive grid, lower floor's sprayed coating, upper strata
Sprayed coating, dummy strain gauge sensitive grid, spray strip, insulating layer, protective layer, work strain meter lead, dummy strain gauge lead；Work
Make strain gauge sensitive grid, dummy strain gauge sensitive grid and insulating layer to be located in protective layer；Work strain meter sensitive grid is located at lower floor
Between sprayed coating and upper strata sprayed coating, the upper and lower surface of work strain meter sensitive grid and lower floor's sprayed coating and upper strata sprayed coating are complete
Full bond is together；Dummy strain gauge sensitive grid is placed on the sprayed coating upper surface of upper strata, with work strain meter sensitive grid position and
Direction is consistent, is adhesively fixed by two spray strips on the sprayed coating of upper strata；Insulating layer is placed on above two spray strips, and complete
All standing dummy strain gauge sensitive grid, upper surface and the protective layer of insulating layer fit closely；Work strain meter lead, compensation strain
It counts lead and is located at work strain meter sensitive grid, the end of dummy strain gauge sensitive grid respectively, draw from the preformed hole of protective layer
Go out..
Further, work strain meter sensitive grid and dummy strain gauge sensitive grid are using same model, the list of same batch
The naked sensitive grid of axial strain meter.
Further, the thickness of lower floor's sprayed coating, upper strata sprayed coating, spray strip is 0.03~0.3mm, the width of spray strip
For 0.3~1.5mm.
Further, the mass percent phase of lower floor's sprayed coating 2, the component of upper strata sprayed coating 3 and spray strip 5 and each component
Together, component Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, the mass percent of each component is Al2O3∶98.3、SiO2
∶0.78、Fe2O3∶0.05、TiO2∶0.01、NaO2∶0.3、CaO∶0.2、MgO∶0.36。
Further, insulating layer uses asbestos cushion material.
Further, protective layer uses metal alloy sheet, and thickness is 0.03~0.1mm.
The advantage of the invention is that：
1. the present invention arranges dummy strain gauge, the sensitive Gate and work strain of dummy strain gauge in the top of work strain meter
It is consistent to count sensitive grid position and direction, while the sensitive Gate of dummy strain gauge is adhesively fixed by two spray strips and is sprayed on upper strata
On layer, make dummy strain gauge that there is identical temperature field with work strain meter, the sensitive Gate of dummy strain gauge is made only to experience work
The temperature that the sensitive Gate of strain gauge is experienced, the strain that the sensitive Gate without experiencing work strain meter is experienced, therefore mend
The output for repaying strain gauge is the thermal output of work strain meter, and eliminating the thermal output of work strain meter influences, and improves high temperature static strain
Measurement accuracy and reliability reduce thermal output calibration link, make the simpler convenience of high temperature static strain measurement.
2. the output of dummy strain gauge can compensate for the instantaneous thermal output of work strain meter, high temperature static strain gauge of the present invention
Under the environment that is rapidly heated, it can also achieve the effect that high certainty of measurement and good reliability.
Description of the drawings
Fig. 1 is the structure diagram for the high temperature static strain gauge with dummy strain gauge that one embodiment of the invention provides.
In figure：1- work strain meters sensitive grid, 2- lower floors sprayed coating, 3- upper stratas sprayed coating, 4- dummy strain gauges sensitive grid,
5- spray strips, 6- insulating layers, 7- protective layers, 8- work strain meters lead, 9- dummy strain gauge leads.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Strain value is measured in addition to the thermal strain or mechanical strain of needs in the actual measurement of work strain meter, further includes work
Strain gauge is affected by temperature the thermal output of generation, and thermal output is not real strain, it is necessary to be corrected.The present invention is in work strain
The top arrangement dummy strain gauge of meter makes the output of dummy strain gauge eliminate work strain meter for the thermal output of work strain meter
Thermal output influences.
As shown in Figure 1, a kind of high temperature static strain gauge with dummy strain gauge that one embodiment of the invention provides includes work
Make strain gauge sensitive grid 1, lower floor's sprayed coating 2, upper strata sprayed coating 3, dummy strain gauge sensitive grid 4, spray strip 5, insulating layer 6, guarantor
Sheath 7, work strain meter lead 8, dummy strain gauge lead 9.
Wherein：Work strain meter sensitive grid 1, dummy strain gauge sensitive grid 4 and insulating layer 6 are located in protective layer 7；Work should
Become meter sensitive grid 1 between lower floor's sprayed coating 2 and upper strata sprayed coating 3, the upper and lower surface of work strain meter sensitive grid 1 is under
Together with layer sprayed coating 2 is fully bonded to upper strata sprayed coating 3；Dummy strain gauge sensitive grid 4 is placed in 3 upper surface of upper strata sprayed coating
On, it is consistent with work strain meter 1 position and direction of sensitive grid, it is adhesively fixed by two spray strips 5 on upper strata sprayed coating 3；
Insulating layer 6 is placed on above two spray strips 5, and dummy strain gauge sensitive grid 4 is completely covered, the upper surface of insulating layer 6 and guarantor
Sheath 7 fits closely；Work strain meter lead 8, dummy strain gauge lead 9 are located at work strain meter sensitive grid 1 respectively, compensation is answered
Become the end of meter sensitive grid 4, drawn from the preformed hole of protective layer 7.
In the present embodiment, work strain meter sensitive grid 1 and dummy strain gauge sensitive grid 4 use same batch model HFH-
The naked sensitive grid of the uniaxial strain gage of 12-125-ZHW, the size of uniaxial strain gage sensitive grid is 5 × 3mm.In work strain meter
Top arrangement dummy strain gauge, the sensitive Gate of dummy strain gauge is consistent with work strain meter sensitive grid position and direction, simultaneously
The sensitive Gate of dummy strain gauge is adhesively fixed by two spray strips on the sprayed coating of upper strata, makes dummy strain gauge and work strain
Meter has identical temperature field, and the sensitive Gate of dummy strain gauge is made only to experience the temperature that the sensitive grid of work strain meter is experienced
Degree, the strain that the sensitive grid without experiencing work strain meter is experienced, the output of dummy strain gauge are the heat of work strain meter
Output.Under the working environment that is rapidly heated, the output of dummy strain gauge can compensate for the instantaneous thermal output of work strain meter, high temperature
Static strain meter can also achieve the effect that high certainty of measurement and good reliability.
Lower floor's sprayed coating 2, upper strata sprayed coating 3, the thickness of spray strip 5 are 0.08mm, and the width of spray strip 5 is 1mm；Two
The center line of spray strip 5 is respectively at 1/3,2/3 that the grid of dummy strain gauge sensitive grid 4 are grown.
Insulating layer 6 uses asbestos cushion material, plays between protective layer 7 and dummy strain gauge sensitive grid 4 insulation and heat-insulated
Effect.
Protective layer 7 uses metal alloy sheet, and thickness 0.08mm plays a part of to protect strain gauge.
Work strain meter lead 8 and dummy strain gauge lead 9 justify lead for Φ 0.08mm Aludiromes.
In the present embodiment, the quality percentage of lower floor's sprayed coating 2, the component of upper strata sprayed coating 3 and spray strip 5 and each component
Than identical, component Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, the mass percent of each component is Al2O3∶98.3、
SiO2∶0.78、Fe2O3∶0.05、TiO2∶0.01、NaO2∶0.3、CaO∶0.2、MgO∶0.36。
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical solution falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (6)
1. a kind of high temperature static strain gauge with dummy strain gauge, it is characterised in that：Including work strain meter sensitive grid (1), under
Layer sprayed coating (2), upper strata sprayed coating (3), dummy strain gauge sensitive grid (4), spray strip (5), insulating layer (6), protective layer (7),
Work strain meter lead (8), dummy strain gauge lead (9)；Work strain meter sensitive grid (1), dummy strain gauge sensitive grid (4) and
Insulating layer (6) is located in protective layer (7)；Work strain meter sensitive grid (1) is located at lower floor's sprayed coating (2) and upper strata sprayed coating (3)
Between, the upper and lower surface of work strain meter sensitive grid (1) is fully bonded to one with lower floor's sprayed coating (2) with upper strata sprayed coating (3)
It rises；Dummy strain gauge sensitive grid (4) is placed on upper strata sprayed coating (3) upper surface, with work strain meter sensitive grid (1) position and side
To consistent, it is adhesively fixed by two spray strips (5) on upper strata sprayed coating (3)；Insulating layer (6) is placed on two spray strips
(5) above, and it is completely covered dummy strain gauge sensitive grid (4)；The upper surface of insulating layer (6) is fitted closely with protective layer (7)；Work
Make strain gauge lead (8), dummy strain gauge lead (9) and be located at work strain meter sensitive grid (1), dummy strain gauge sensitive grid respectively
(4) end is drawn from the preformed hole of protective layer (7)；Lower floor's sprayed coating (2), upper strata sprayed coating (3) and spray strip (5)
Component and the mass percent of each component are identical, component Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, each component
Mass percent is Al2O3：98.3、SiO2：0.78、Fe2O3：0.05、TiO2：0.01、NaO2：0.3、CaO：0.2、MgO：
0.36。
2. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1, it is characterised in that：Work strain meter
Sensitive grid (1) and dummy strain gauge sensitive grid (4) are using same model, the naked sensitive grid of the uniaxial strain gage of same batch.
3. a kind of high temperature static strain gauge with dummy strain gauge as claimed in claim 1 or 2, it is characterised in that：Lower floor sprays
Coating (2), upper strata sprayed coating (3), the thickness of spray strip (5) for 0.03~0.3mm, the width of spray strip (5) for 0.5~
1.5mm。
4. a kind of high temperature static strain gauge with dummy strain gauge as claimed in claim 3, it is characterised in that：Lower floor's sprayed coating
(2), upper strata sprayed coating (3), the thickness of spray strip (5) are 0.03~0.3mm, and the width of spray strip (5) is 0.5~1.5mm.
5. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1,2 or 4, it is characterised in that：Insulation
Layer (6) uses asbestos cushion material.
6. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1,2 or 4, it is characterised in that：Protection
For layer (7) using metal alloy sheet, thickness is 0.03~0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027345.7A CN105698744B (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge with dummy strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027345.7A CN105698744B (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge with dummy strain gauge |
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| Publication Number | Publication Date |
|---|---|
| CN105698744A CN105698744A (en) | 2016-06-22 |
| CN105698744B true CN105698744B (en) | 2018-05-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403804B (en) * | 2016-08-23 | 2019-10-08 | 上海交通大学 | A kind of high temperature synchroballistic thin film strain meter and preparation method thereof |
| EP3410060A1 (en) * | 2017-05-29 | 2018-12-05 | voestalpine Stahl GmbH | Strain gauge and metal strip having a coating for such a strain gauge |
| CN109342251A (en) * | 2018-12-06 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | It is a kind of for straining the self-checking device and method of quantity collection system |
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|---|---|---|---|---|
| CN2356329Y (en) * | 1998-11-12 | 1999-12-29 | 宜兴市申大电子称量有限公司 | High temperature weighing sensor |
| CN2777522Y (en) * | 2005-03-22 | 2006-05-03 | 中国航天科技集团公司第一研究院第七○二研究所 | Double plate self-compensation strain sensor |
| CN102434445A (en) * | 2011-11-08 | 2012-05-02 | 襄樊五二五泵业有限公司 | Axial force measurement device and test method of magnetic pump under instant high temperature difference environment |
| CN103968773A (en) * | 2013-01-29 | 2014-08-06 | 中国计量学院 | Flexible high-temperature raster strain foil for two-dimensional stress detection |
| CN205748351U (en) * | 2015-12-25 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of high temperature static strain gauge of band dummy strain gauge |
-
2015
- 2015-12-25 CN CN201511027345.7A patent/CN105698744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2356329Y (en) * | 1998-11-12 | 1999-12-29 | 宜兴市申大电子称量有限公司 | High temperature weighing sensor |
| CN2777522Y (en) * | 2005-03-22 | 2006-05-03 | 中国航天科技集团公司第一研究院第七○二研究所 | Double plate self-compensation strain sensor |
| CN102434445A (en) * | 2011-11-08 | 2012-05-02 | 襄樊五二五泵业有限公司 | Axial force measurement device and test method of magnetic pump under instant high temperature difference environment |
| CN103968773A (en) * | 2013-01-29 | 2014-08-06 | 中国计量学院 | Flexible high-temperature raster strain foil for two-dimensional stress detection |
| CN205748351U (en) * | 2015-12-25 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of high temperature static strain gauge of band dummy strain gauge |
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