CN106225663A - Verification device for strain test - Google Patents
Verification device for strain test Download PDFInfo
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- CN106225663A CN106225663A CN201610609066.XA CN201610609066A CN106225663A CN 106225663 A CN106225663 A CN 106225663A CN 201610609066 A CN201610609066 A CN 201610609066A CN 106225663 A CN106225663 A CN 106225663A
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- 238000012360 testing method Methods 0.000 title claims abstract description 146
- 238000012795 verification Methods 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 claims abstract description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 32
- 238000006073 displacement reaction Methods 0.000 claims description 31
- 230000007704 transition Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 17
- 239000011888 foil Substances 0.000 description 17
- 208000035126 Facies Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a verification device for a strain test, which comprises a test piece, a tension loading unit, a tension measuring unit and a base, wherein the tension loading unit is arranged on the base; one end of the test piece is fixed on the base, and the other end of the test piece is connected with the tension loading unit; the tension loading unit is used for applying tension to the test piece; the tension measuring unit is used for measuring the tension applied to the test piece by the tension loading unit. The verification device can verify the measurement result of the resistance strain gauge and provides technical support for researching the strain measured by a resistance strain method.
Description
Technical field
The present invention relates to technical field of measuring equipment, particularly relate to the checking device of a kind of strain testing.
Background technology
The method of testing of strain is a lot, and wherein conventional method is strain gage testing method.The method is with strain
Sensing element i.e. resistance strain gage, measures the surface strain of component, obtains answering of component surface further according to strain stress relationship
Power state, thus component is carried out stress analysis.
But, the result of strain gage testing, there are bigger relation, application the method to obtain with the stickup level of foil gauge
After test result, it is impossible to verify its accuracy.When particularly practitioner being giveed training, it is impossible to judge according to test result
The foil gauge that practitioner pastes whether standard.
Therefore, the checking device of a kind of strain testing how is designed, it is possible to strain gage testing result is verified,
It is that those skilled in the art are presently required and solve the technical problem that.
Summary of the invention
It is an object of the invention to provide the checking device of a kind of strain testing, resistance strain gage can be surveyed by this checking device
Amount result is verified, surveys strain for research resistance-strain method and provides technical support.
For solving above-mentioned technical problem, the present invention provides the checking device of a kind of strain testing, loads including test specimen, pulling force
Unit, tension measurement unit and pedestal；
Described pedestal is fixed in one end of described test specimen, and the other end of described test specimen connects described pulling force loading unit；
Described pulling force loading unit is for applying pulling force to described test specimen；
Described tension measurement unit is for measuring the pulling force size that described test specimen is applied by described pulling force loading unit.
The checking device of the strain testing that the present invention provides, when applying at the scene, first the correct position in surface of test piece glues
Patch foil gauge, then by pulling force loading unit, test specimen is applied pulling force, afterwards, surveyed by the measuring instrument being connected with foil gauge
Obtain the strain produced after test specimen bears pulling force；The big I of pulling force that test specimen is applied by pulling force loading unit passes through tension measurement unit
Measurement obtains, and the relevant parameter of test specimen i.e. elastic modelling quantity, geometric parameter can obtain in advance, bears in such manner, it is possible to calculate test specimen
The strain produced after pulling force, compares the strain facies that this calculated strain records with aforementioned foil gauge measurement method, can test
The accuracy of card strain gauge method test, surveys strain for research strain gauge method and provides the foundation；Further, since this checking device can
The accuracy of checking strain gauge method test, so can be also used for the training of practitioner, pastes foil gauge according to practitioner
Whether the strain recorded and the strain facies contrast applying this checking device to calculate, can mark as practitioner's strain gauge adhesion
Accurate reference.
Optionally, described pulling force loading unit includes pedestal, leading screw, transition components and actuator；
One end of described leading screw is through the screwed hole of described pedestal, and is connected with described test specimen by described transition components；
Described actuator is used for driving described leading screw to rotate；
The convert rotational motion of described leading screw can be linear motion by described transition components, to apply to draw to described test specimen
Power.
Optionally, described actuator is the handwheel of the other end being located at described leading screw.
Optionally, described transition components includes connecting shaft, adapter sleeve, bearing and adapter；
One end of described connecting shaft is affixed with described leading screw, the other end of described connecting shaft and the interior ring gap of described bearing
Coordinate；
The outer ring of described bearing and one end interference fit of described adapter sleeve, the other end of described adapter sleeve and described conversion
Joint is affixed, and described adapter is connected with described test specimen.
Optionally, described pulling force loading unit includes adapter, stay cord, spool and the motor being connected with described test specimen；
Described stay cord is wound in described spool, and its one end is connected with described adapter, and its other end is with described motor even
Connect；Described motor can pull described stay cord.
Optionally, described pulling force loading unit also includes supporting seat and being fixed on the spool support part of described support seat；Institute
State motor and be installed on described support seat；Described spool support part is used for supporting described spool.Optionally, described tension measurement unit
It is located between described adapter and described test specimen.
Optionally, described tension measurement unit includes pulling force sensor, its two ends by securing member respectively with described conversion
Joint, described test specimen connect.
Optionally, also include that workbench, described pedestal and described pulling force loading unit are mounted on described workbench.
Optionally, described workbench being additionally provided with displacement measurement unit, it is used for measuring described test specimen and is added by described pulling force
Displacement when carrier unit pulls.
Optionally, described displacement measurement unit includes:
Connecting rod, its one end is affixed with described workbench；
Displacement transducer, it is located at the other end of described connecting rod, and contacts with described test specimen.
Optionally, one end that described test specimen is connected with described pulling force loading unit has protuberance, and described protuberance has
The surface vertical with the direction of pull that described pulling force loading unit applies, institute's displacement sensors contacts with described surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of specific embodiment of the checking device of strain testing provided by the present invention；
Fig. 2 is the view of another angle of the checking device of strain testing shown in Fig. 1；
Fig. 3 is that the local of test specimen in Fig. 1, tension measurement unit, displacement measurement unit and pulling force loading unit junction is put
Big figure；
Fig. 4 is tension measurement unit and the generalized section of pulling force loading unit junction in Fig. 1；
The structural representation of the another kind of specific embodiment of the checking device that Fig. 5 is offer strain testing of the present invention.
Description of reference numerals:
Test specimen 100, protuberance 101；
Workbench 10, pulling force loading unit 20, pedestal 21, leading screw 22, connecting shaft 23, bearing 24, adapter sleeve 25, conversion connects
26, handwheel 27, stay cord 28, spool 29, motor 230, support seat 231, spool support part 232, tension measurement unit 30, pedestal
40, displacement measurement unit 50, connecting rod 51, displacement transducer 52.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
Refer to a kind of specific embodiment of the checking device that Fig. 1 and Fig. 2, Fig. 1 are strain testing provided by the present invention
Structural representation；Fig. 2 is the view of another angle of the checking device of strain testing shown in Fig. 1.
In this embodiment, the checking device of strain testing includes test specimen 100, pulling force loading unit 20, tension measurement unit
30 and pedestal 40.
Wherein, pedestal 40 is fixed in one end of test specimen 100, and the other end of test specimen 100 connects pulling force loading unit 20.
Pulling force loading unit 20 can apply pulling force to test specimen 100, so that test specimen 100 is deformed.
The pulling force size that test specimen 100 is applied by pulling force loading unit 20 can be measured by tension measurement unit 30.
The checking device of this strain testing, when applying at the scene, first the correct position on test specimen 100 surface pastes strain
Sheet, then by pulling force loading unit 20, test specimen 100 is applied pulling force, afterwards, by the measuring instrument being connected with foil gauge it is
The strain produced after test specimen 100 bears pulling force can be recorded；During this, the pulling force that test specimen 100 is applied by pulling force loading unit 20
Big I is measured 30 by tension measurement unit and is obtained, the relevant parameter of test specimen 100, i.e. elastic modelling quantity, characterize the several of cross section
What parameter all can obtain in advance, this makes it possible to according to test specimen 100 tension, the elastic modelling quantity of test specimen 100, sectional area meter
Calculate the strain obtaining producing after test specimen 100 bears pulling force；Calculated strain and aforementioned foil gauge measurement method are recorded should
In a disguised form compare, i.e. can verify that the accuracy that strain gauge method is tested, survey strain for research resistance-strain method and technical support is provided.
Further, since this checking device is able to verify that the accuracy that strain gauge method is tested, so can also be used to working
The training of personnel, pastes the foil gauge strain recorded and the strain facies pair applying this checking device to calculate according to practitioner
Ratio, can be as the reference of practitioner's strain gauge adhesion whether standard.
It should be noted that in this checking device, owing to needing cutting of the pulling force born according to test specimen 100 and test specimen 100
Area, the elastic modelling quantity of test specimen 100 carry out the deformation of calculation testing piece 100, so, the test specimen 100 generally selected, its main body should be
Regular shape.
In concrete scheme, pulling force loading unit 20 includes pedestal 21, leading screw 22, transition components and actuator.
Wherein, one end of leading screw 22 is through the screwed hole of pedestal 21, and is connected with test specimen 100 by transition components；Drive
Moving part can drive leading screw 22 to rotate；The convert rotational motion of leading screw 22 can be linear motion by transition components, with to test specimen
100 apply pulling force.
When applying pulling force, leading screw 22 is driven to rotate by actuator, owing to the screwed hole of leading screw 22 with pedestal 21 coordinates, institute
Also move along a straight line, with visual angle shown in Fig. 1 and Fig. 2 while rotating with leading screw 22, it should make leading screw 22 while rotating
Moving right, the convert rotational motion of leading screw 22 is linear motion by the transition components being located between test specimen 100 and leading screw 22, draws
Dynamic test specimen 100 moves right.It is to say, the effect of transition components is to ensure that test specimen 100 only moves linearly, without with
Leading screw 22 rotates.
Please also refer to Fig. 3 and Fig. 4；Fig. 3 is that test specimen in Fig. 1, tension measurement unit, displacement measurement unit and pulling force load
The partial enlarged drawing of unit junction；Fig. 4 is the section signal of tension measurement unit and pulling force loading unit junction in Fig. 1
Figure.
Specifically, aforementioned transition components includes connecting shaft 23, bearing 24, adapter sleeve 25 and adapter 26.
Wherein, one end of connecting shaft 23 is affixed with leading screw 22, and both can use threaded, and junction is joined by nut
Incompatible fixing, the other end of connecting shaft 23 and one end of the inner ring matched in clearance of bearing 24, the outer ring of bearing 24 and adapter sleeve 25
Interference fit, so, connecting shaft 23 rotates with leading screw 22 and moves along a straight line, by the setting of bearing 24, adapter sleeve 25
Only move along a straight line with connecting shaft 23；The other end of adapter sleeve 25 is affixed with adapter 26, and both may be used without threaded
Mode, adapter 26 is connected with test specimen 100 again.
In concrete scheme, actuator can be set to the handwheel 27 being connected with leading screw 22 end, drives by rotating handwheel 27
Leading screw 22 rotates.Certainly, reality may be used without Mechanical Driven or electrically driven (operated) mode to drive leading screw 22 to rotate.
In concrete scheme, tension measurement unit 30 is arranged between adapter 26 and test specimen 100, had both been easy to examination
The pulling force that part 100 bears measures, it is possible to guarantee that tension measurement unit 30 only moves along a straight line, it is to avoid tension measurement unit 30
Rotate, improve the accuracy measured.
Certainly, in reality, it is possible to tension measurement unit 30 is arranged on other suitable positions, as long as can accurately measure
The pulling force that test specimen 100 bears.
Specifically, tension measurement unit 30 can be selected for pulling force sensor, not only simplicity but also reliable.Certainly, it is possible to select other
The dynamometry instrument of form.
Specifically, pulling force sensor is threaded connection with adapter 26, relies on nut to realize fixing, pulling force sensor
Also can be threaded connection with test specimen 100, rely on nut to realize fixing mode.Certainly reality may be used without other reliable
Connected mode.
When arranging, the distance between pedestal 21 and pedestal 40 can be adjusted according to the actual requirements, single to guarantee that pulling force loads
Unit 20 can be connected with test specimen 100, and test specimen 100 is applied pulling force.
During guaranteeing test specimen 100 is applied pulling force, the stability of each associated components, reduce error, also can arrange
Workbench 10, is fixedly arranged on the pedestal 21 of the pedestal 40 of fixing test specimen 100 with pulling force loading unit 20 on workbench 10.
Wherein, pedestal 40 all uses the fixed form removably connected, with side with workbench 10, pedestal 21 with workbench 10
Just both relative positions are adjusted according to the difference of test specimen 100.
Specifically, pedestal 40, pedestal 21 all can use bolt to be relatively fixed with workbench 10.
Further in scheme, this checking device also can arrange displacement measurement unit 50 on workbench 10, so, in examination
During part 100 bears pulling force, record test specimen 100 because bearing the displacement that pulling force produces also by displacement measurement unit 50
Amount, i.e. the deformation quantity of test specimen 100, the deformation quantity of calculation testing piece 100 i.e. can get test specimen with the ratio of the entire length of test specimen 100
The strain of 100, the strain that the strain obtained by strain gauge method measurement also can be obtained with this calculation compares, with aforementioned
Combined by the calculated strain facies of pulling force, sectional area and elastic modelling quantity, the accuracy that can preferably strain gauge method be tested
Verify.
In concrete scheme, displacement measurement unit 50 includes connecting rod 51 and displacement transducer 52；Wherein, connecting rod 51
One end is fixedly arranged on workbench 10, other end installation position displacement sensor 52, and displacement transducer 52 can contact with test specimen 100, with
Realize measuring the purpose of test specimen 100 displacement.
Specifically, connecting rod 51 can be fixed with workbench 10 in the way of being threaded connection, convenient and reliable.
Specifically, offer through hole in one end of connecting rod 51 installation position displacement sensor 52, displacement transducer 52 is installed
In this through hole, it is bolted.
It should be noted that in practical operation, it should according to the material behavior of test specimen 100, select suitable pulling force size,
To ensure that the deformation quantity that produces after bearing pulling force of test specimen 100 is in the range of the measurement of displacement transducer 52.
For ease of the connection of the measurement of displacement transducer 52 and test specimen 100 with aforementioned pulling force sensor, can be at test specimen 100
End protuberance 101 is set, this protuberance 101 has and applies, with pulling force loading unit 20, the surface that direction of pull is vertical, logical
Cross adjustment connecting rod 51 and the relative position of workbench 10, make displacement transducer 52 contact with this surface.
It addition, affixed for convenience of test specimen 100 and pedestal 40, one end that test specimen 100 is connected with pedestal 40 may also set up and
The mounting seat structure that protuberance 101 is similar, for convenient and reliable operation, test specimen 100 can use with pedestal 40 threaded, nut
Fixing mode.
For reducing the impact on test result, the protuberance 101 at test specimen 100 two ends, mounting seat size should be in certain journeys
More than the sectional dimension of test specimen 100 main body on degree.
Below as a example by the cross section of test specimen 100 main body is rectangular, the application of this checking device is described.
Wherein, the elastic modelling quantity of test specimen 100 is E, a length of h of square-section, and width is b.
First at the surface mount foil gauge of test specimen 100, preferably by strain gauge adhesion on the surface that test specimen 100 is wider；Connect
, rotate handwheel 27, by coordinating of the screwed hole of leading screw 22 and pedestal 21, leading screw 22 is straight line shifting to the right while rotating
Dynamic, the connecting shaft 23 affixed with leading screw 22 rotates with leading screw 22 and moves linearly to the right, by connecting shaft 23 and adapter sleeve
Bearing 24 between 25 acts on, and adapter sleeve 25 moves linearly the most to the right with connecting shaft 23, through adapter 26, pull sensing
The transmission of device, it is achieved test specimen 100 is applied the effect of pulling force.
After test specimen 100 is applied pulling force, test specimen 100 can be recorded by the measuring instrument being connected with foil gauge and bear pulling force work
With the strain of rear generation, this strain is the strain recorded by strain gauge method, for convenience of subsequent descriptions, is designated as μTo be tested。
The pulling force recorded by pulling force sensor can calculate the strain produced after test specimen 100 bears pulling force effect, if drawing
The pulling force that force transducer records is F, can be calculated, according to formula μ=F/ (b*h)/E, the strain that test specimen 100 produces, be remembered
For μ1；
The displacement recorded by displacement transducer 52 also can calculate test specimen 100 bear produce after pulling force effect should
Become, if the displacement that displacement transducer 52 records is △ L, test specimen 100 main body (part that i.e. cross section is rectangular) a length of
L, can be calculated, according to formula μ=△ L/L, the strain that test specimen 100 produces, be designated as μ2；
By μTo be testedWith μ1、μ2Relative analysis, i.e. can verify that the accuracy using strain gauge method test strain.
Additionally, on the basis of aforementioned manner, also can additionally paste a high accuracy foil gauge on test specimen 100, this is high-precision
Degree foil gauge can be pasted by the foil gauge engineer of specialty, the strain μ recorded by this high accuracy foil gauge3Also with μTo be tested、
μ1、μ2Compare, preferably the accuracy of strain gauge method test is verified, and carry for research resistance-strain method survey strain
For more reliable technical support.
Should be appreciated that this high accuracy foil gauge needs with the Impact direction of the common foil gauge of aforementioned stickup to keep consistent.
Refer to the knot of the another kind of specific embodiment of the checking device that Fig. 5, Fig. 5 are offer strain testing of the present invention
Structure schematic diagram.
The checking device of this embodiment is compared with previous embodiment, and difference is: the structure of pulling force loading unit 20 is different.
As it is shown in figure 5, in the program, pulling force loading unit 20 includes adapter 26, the stay cord being connected with test specimen 100
28, spool 29 and motor 230.
Wherein, stay cord 28 is wound in spool 29, and its one end is connected with adapter 26, and its other end is connected with motor 230；
Motor 230 can pull stay cord 28.
When applying pulling force, pull stay cord 28, stay cord 28 to pull adapter 26 by motor 230, thus test specimen 100 is executed
Add pulling force.
Specifically, pulling force loading unit 20 also includes supporting seat 231 and being fixed on the spool support part 232 supporting seat 231；
Motor 230 is installed on support seat 231；Spool support part 232 is for supporting reel 29.
So, each parts of pulling force loading unit 20 can be integrated in support seat 231, it is simple to moves integrally and installs.
If it addition, arrange conveniently, spool 29 may be used without the mode of hanging and installs.
In the program, other concrete structures of checking device all refer to aforementioned first embodiment, repeat no more here.
Above the checking device of strain testing provided by the present invention is described in detail.Used herein specifically
Principle and the embodiment of the present invention are set forth by individual example, and the explanation of above example is only intended to help and understands the present invention
Method and core concept.It should be pointed out that, for those skilled in the art, former without departing from the present invention
On the premise of reason, it is also possible to the present invention is carried out some improvement and modification, these improve and modification also falls into right of the present invention and wants
In the protection domain asked.
Claims (12)
1. the checking device of strain testing, it is characterised in that include test specimen (100), pulling force loading unit (20), tension measurement list
Unit (30) and pedestal (40)；
Described pedestal (40) is fixed in one end of described test specimen (100), and the other end of described test specimen (100) connects described pulling force and adds
Carrier unit (20)；
Described pulling force loading unit (20) is for applying pulling force to described test specimen (100)；
Described tension measurement unit (30) is used for measuring the pulling force that described test specimen (100) is applied by described pulling force loading unit (20)
Size.
The checking device of strain testing the most according to claim 1, it is characterised in that described pulling force loading unit (20) is wrapped
Include pedestal (21), leading screw (22), transition components and actuator；
One end of described leading screw (22) is through the screwed hole of described pedestal (21), and passes through described transition components and described test specimen
(100) connect；
Described actuator is used for driving described leading screw (22) to rotate；
The convert rotational motion of described leading screw (22) can be linear motion by described transition components, with to described test specimen (100)
Apply pulling force.
The checking device of strain testing the most according to claim 2, it is characterised in that described actuator is for being located at described silk
The handwheel (27) of the other end of thick stick (22).
The checking device of strain testing the most according to claim 2, it is characterised in that described transition components includes connecting shaft
(23), adapter sleeve (25), bearing (24) and adapter (26)；
One end of described connecting shaft (23) is affixed with described leading screw (22), the other end of described connecting shaft (23) and described bearing
(24) inner ring matched in clearance；
One end interference fit of the outer ring of described bearing (24) and described adapter sleeve (25), the other end of described adapter sleeve (25) with
Described adapter (26) is affixed, and described adapter (26) is connected with described test specimen (100).
The checking device of strain testing the most according to claim 1, it is characterised in that described pulling force loading unit (20) is wrapped
Include adapter (26), stay cord (28), spool (29) and the motor (230) being connected with described test specimen (100)；
Described stay cord (28) is wound in described spool (29), and its one end is connected with described adapter (26), its other end and institute
State motor (230) to connect；Described motor (230) can pull described stay cord (28).
The checking device of strain testing the most according to claim 5, it is characterised in that described pulling force loading unit (20) is also
Including supporting seat (231) and being fixed on the spool support part (232) of described support seat (231)；Described motor (230) is installed on institute
State support seat (231)；Described spool support part (232) is used for supporting described spool (29).
7. according to the checking device of the strain testing described in any one of claim 4-6, it is characterised in that described tension measurement list
Unit (30) is located between described adapter (26) and described test specimen (100).
The checking device of strain testing the most according to claim 7, it is characterised in that described tension measurement unit (30) is wrapped
Including pulling force sensor, its two ends are connected with described adapter (26), described test specimen (100) respectively by securing member.
9. according to the checking device of the strain testing described in any one of claim 2-6, it is characterised in that also include workbench
(10), described pedestal (40) and described pulling force loading unit (20) are mounted on described workbench (10).
The checking device of strain testing the most according to claim 9, it is characterised in that described workbench also sets on (10)
Having displacement measurement unit (50), it is used for measuring displacement when described test specimen (100) is pulled by described pulling force loading unit (20)
Amount.
The checking device of 11. strain testings according to claim 10, it is characterised in that described displacement measurement unit (50)
Including:
Connecting rod (51), its one end is affixed with described workbench (10)；
Displacement transducer (52), it is located at the other end of described connecting rod (51), and contacts with described test specimen (100).
The checking device of 12. strain testings according to claim 11, it is characterised in that described test specimen (100) is with described
One end that pulling force loading unit (20) connects has protuberance (101), and described protuberance (101) has single with the loading of described pulling force
The surface that unit (20) direction of pull that applies is vertical, institute's displacement sensors (52) contacts with described surface.
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|---|---|---|---|
| CN201610609066.XA CN106225663A (en) | 2016-07-28 | 2016-07-28 | Verification device for strain test |
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|---|---|---|---|
| CN201610609066.XA CN106225663A (en) | 2016-07-28 | 2016-07-28 | Verification device for strain test |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105486604A (en) * | 2015-12-11 | 2016-04-13 | 中国飞机强度研究所 | Calibration conversion device for loading frame of combined loading complete equipment |
| CN106644257A (en) * | 2016-12-07 | 2017-05-10 | 北京金风科创风电设备有限公司 | Torque measurement verification device |
| CN107576260A (en) * | 2017-08-25 | 2018-01-12 | 天津大学 | A kind of ball-screw sag real-time detecting system and method |
| CN109693813A (en) * | 2019-01-30 | 2019-04-30 | 西安工业大学 | A kind of ground simulation actinobacillus device being compatible with more specification spools |
| CN113670490A (en) * | 2021-08-12 | 2021-11-19 | 陕西飞机工业有限责任公司 | Force-displacement measuring device and measuring method |
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| CN107576260A (en) * | 2017-08-25 | 2018-01-12 | 天津大学 | A kind of ball-screw sag real-time detecting system and method |
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