CN110261020A - Suitable for measuring four pressure head components of nonequiaxial residual stress - Google Patents
Suitable for measuring four pressure head components of nonequiaxial residual stress Download PDFInfo
- Publication number
- CN110261020A CN110261020A CN201910525110.2A CN201910525110A CN110261020A CN 110261020 A CN110261020 A CN 110261020A CN 201910525110 A CN201910525110 A CN 201910525110A CN 110261020 A CN110261020 A CN 110261020A
- Authority
- CN
- China
- Prior art keywords
- pressure head
- degree
- nonequiaxial
- measuring
- pinboard
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 20
- 238000007373 indentation Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of four pressure head components suitable for measuring nonequiaxial residual stress, including linear motor, pinboard, 4 load transducers and 4 Knoop pressure heads, the linear motor is fixed on Portable press fit instrument, the pinboard is connect with linear motor drive rod, 4 load transducers are connected below the pinboard, the Knoop pressure head is connected to below load transducer, and 4 Knoop pressure heads long axis is respectively with reference data line at 0 degree, 45 degree, 90 degree and 135 degree.It avoids manually adjusting, simplify operation, higher four pressure head components for being suitable for measuring nonequiaxial residual stress of testing efficiency the present invention provides a kind of, compared with single pressure head component of existing commercial indentation instrument, four pressure head components of the invention are in 45 degree, only 4 indentations of existing single pressure head component progress test just data such as obtainable whole load, depth need to can be obtained by being once pressed into, avoid repeated disassembled and assembled pressure head, to save time cost, testing efficiency is improved.
Description
Technical field
The present invention relates to a kind of pressure head components for instrumentation indentation test, are particularly suitable for using instrumentation press fit instrument
Measure the Knoop pressure head component of nonequiaxial residual stress.
Background technique
On the surface of military service engineering material, always there is nonequiaxial residual stress, and then influences its mechanical property and be on active service
Service life.To detect nonequiaxial residual stress, presently, there are a kind of to carry out 4 detections being pressed into using Knoop pressure head on the surface of the material
Method.In 4 process of press in, this method must assure that Knoop pressure head long axis and reference line respectively at 0 degree, 45 degree, 90 degree and
135 degree, and then obtain principal stress size and the direction of nonequiaxial residual stress.However, being directed to this method, current commercial pressure is used
The single pressure head component for entering instrument needs to be pressed into 4 times, and all necessary repeated disassembled and assembled pressure head of indentation every time, manually adjusts Knoop pressure head long axis
With the angle between reference data line, process is cumbersome, greatly reduction testing efficiency.
Summary of the invention
In order to overcome needs 4 times indentations of existing single pressure head component, manually adjust Knoop pressure head long axis and reference line repeatedly
Angle, greatly reduce testing efficiency deficiency, the present invention provides one kind to avoid manually adjusting, simplifies operation, testing efficiency
Higher four pressure head components for being suitable for measuring nonequiaxial residual stress, single pressure head component phase with existing commercial indentation instrument
Than four pressure head components of the invention are in 45 degree, need to can only be obtained existing single pressure head component progress 4 times by being once pressed into
The data such as the obtainable whole load of indentation test, depth, avoid repeated disassembled and assembled pressure head, to save time cost, improve
Testing efficiency.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of four pressure head components suitable for measuring nonequiaxial residual stress, including linear motor, pinboard, 4 load
Sensor and 4 Knoop pressure heads, the linear motor are fixed on Portable press fit instrument, and the pinboard and linear motor are driven
Bar connection, the pinboard lower section connect 4 load transducers, and the Knoop pressure head is connected to below load transducer, and described 4
A Knoop pressure head long axis is respectively with reference data line at 0 degree, 45 degree, 90 degree and 135 degree.
Further, contain grating scale inside the linear motor, it is deep with indentation for measuring the displacement of linear motor drive rod
Degree.
Further, the pinboard is connect by threaded hole with linear motor drive rod.
Further, it is used to connect the threaded rod of load transducer, 4 load below the pinboard containing 4
Sensor is connect by threaded hole with threaded rod.
Preferably, the Knoop pressure head is connected to below load transducer by shaft coupling.
Beneficial effects of the present invention are mainly manifested in: the angle between 4 Knoop pressure head long axis of lockable and reference data line
Degree is mutually 45 degree, obtains 4 remaining impressions by once indentation on military service engineering material surface, remaining impression long axis respectively with
Reference data line obtains carrying out 4 indentations using existing single pressure head component respectively at 0 degree, 45 degree, 90 degree and 135 degree
The obtainable total data of test ability provides test data support to solve nonequiaxial residual stress.The present invention and commercial apparatus
Single pressure head component compare, have the characteristics that it is easy for installation, test it is quick, testing efficiency can be effectively improved, save test when
Between cost.
Detailed description of the invention
Fig. 1 is axonometric drawing of the present invention.Wherein, 1 is linear motor, and 2 be pinboard, and 3 be load transducer, and 4 be Knoop pressure
Head.
Fig. 2 is main view of the present invention.
Fig. 3 is the remaining impression schematic diagram on present invention indentation military service engineering material surface.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig.1~Fig. 3, a kind of four pressure head components suitable for measuring nonequiaxial residual stress, the multiple pressure head assembly
Including 2,4 linear motor 1, pinboard load transducer 3 and 4 Knoop pressure heads 4, the linear motor 1 is fixed on portable
On press fit instrument, contain grating scale inside the linear motor, for measuring the displacement of 1 drive rod of linear motor and compression distance；Institute
It states pinboard 2 to connect by threaded hole with 1 drive rod of linear motor, 4 threaded rods, the load is contained below the pinboard 2
Lotus sensor 3 has 4, is connect by threaded hole with threaded rod；The Knoop pressure head 4 has 4, is connected to by shaft coupling
43 lower sections of load transducer, 4 Knoop pressure heads, 4 long axis is respectively with reference data line at 0 degree, 45 degree, 90 degree and 135
Degree.
The working process of this embodiment is as follows:
First, linear motor 1, pinboard 2, load transducer 3, Knoop pressure head 4 are mounted on press fit instrument as shown in Figure 1
On, make 44 long axis of Knoop pressure head respectively with reference data line at 0 degree, 45 degree, 90 degree and 135 degree.
Second, indentation has residual stress military service engineering material, obtains the data such as 4 groups of load, depth, nonequiaxial residual to solve
Residue stress provides test data support.
The scheme of the present embodiment, the angle locked between 4 Knoop pressure head long axis and reference data line are mutually 45 degree, are taking
Labour engineering material surface obtains 4 remaining impressions by once indentation, and remaining impression long axis is distinguished with reference data line respectively
At 0 degree, 45 degree, 90 degree and 135 degree, and then obtain obtainable using existing single pressure head component progress 4 indentations test
Total data provides test data support to solve nonequiaxial residual stress.Single pressure head component phase of the present invention and commercial apparatus
Than having the characteristics that easy for installation, test is quick, testing efficiency can be effectively improved, save the time cost of test.
Claims (5)
1. a kind of four pressure head components suitable for measuring nonequiaxial residual stress, which is characterized in that four pressure head component includes
Linear motor, pinboard, 4 load transducers and 4 Knoop pressure heads, the linear motor are fixed on Portable press fit instrument,
The pinboard is connect with linear motor drive rod, and 4 load transducers are connected below the pinboard, and the Knoop pressure head connects
It connects below load transducer, 4 Knoop pressure heads long axis is respectively with reference data line at 0 degree, 45 degree, 90 degree and 135 degree.
2. four pressure head components as described in claim 1 for being suitable for measuring nonequiaxial residual stress, which is characterized in that described straight
Contain grating scale inside line motor, for measuring the displacement of linear motor drive rod and compression distance.
3. four pressure head components as claimed in claim 1 or 2 for being suitable for measuring nonequiaxial residual stress, which is characterized in that institute
Pinboard is stated to connect by threaded hole with linear motor drive rod.
4. four pressure head components as claimed in claim 1 or 2 for being suitable for measuring nonequiaxial residual stress, which is characterized in that institute
It states below pinboard containing 4 for connecting the threaded rod of load transducer, 4 load transducers pass through threaded hole and spiral shell
Rasp bar connection.
5. four pressure head components as claimed in claim 1 or 2 for being suitable for measuring nonequiaxial residual stress, which is characterized in that institute
Knoop pressure head is stated to be connected to below load transducer by shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525110.2A CN110261020A (en) | 2019-06-18 | 2019-06-18 | Suitable for measuring four pressure head components of nonequiaxial residual stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525110.2A CN110261020A (en) | 2019-06-18 | 2019-06-18 | Suitable for measuring four pressure head components of nonequiaxial residual stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110261020A true CN110261020A (en) | 2019-09-20 |
Family
ID=67918927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525110.2A Pending CN110261020A (en) | 2019-06-18 | 2019-06-18 | Suitable for measuring four pressure head components of nonequiaxial residual stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110261020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964824A (en) * | 2020-08-19 | 2020-11-20 | 中国石油大学(华东) | Method for testing residual stress based on indentation energy difference |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636225Y (en) * | 2003-07-24 | 2004-08-25 | 上海恒一电子测试设备有限公司 | Double-pressing head microhardness tester |
| US20100198530A1 (en) * | 2007-02-06 | 2010-08-05 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
| CN102288500A (en) * | 2011-05-09 | 2011-12-21 | 中国人民解放军装甲兵工程学院 | High-precision instrumented indenter and calculation method for indented-in-sample depth of diamond indenting head |
| KR20120022143A (en) * | 2010-09-01 | 2012-03-12 | 주식회사 쓰리텍 | Measuring method for residual stress of concrete structure using indentation test apparaus and indenter used in the same |
| CN102374953A (en) * | 2010-08-20 | 2012-03-14 | 中国科学院金属研究所 | Indentation device for testing load-displacement curve of material |
| CN104198286A (en) * | 2014-09-11 | 2014-12-10 | 浙江工业大学 | Multi-pressure-head instrumented press-in test system |
| CN105431987A (en) * | 2013-07-22 | 2016-03-23 | 富士胶片株式会社 | Method for fabrication of anisotropic conductive member and method for fabrication of anisotropic conductive bonding package |
| CN105784238A (en) * | 2016-05-19 | 2016-07-20 | 北京大学 | Method for measuring material surface residual stress and system thereof |
| CN105842095A (en) * | 2016-03-22 | 2016-08-10 | 中国科学院金属研究所 | Computer controlled metal material indentation load-displacement data measurement system |
| CN106078008A (en) * | 2016-06-24 | 2016-11-09 | 中车南京浦镇车辆有限公司 | A kind of intercity track train bogie residual stress safety control system and control method |
| CN210108574U (en) * | 2019-06-18 | 2020-02-21 | 浙江工业大学 | Four-pressure head assembly suitable for measuring non-isometric residual stress |
-
2019
- 2019-06-18 CN CN201910525110.2A patent/CN110261020A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636225Y (en) * | 2003-07-24 | 2004-08-25 | 上海恒一电子测试设备有限公司 | Double-pressing head microhardness tester |
| US20100198530A1 (en) * | 2007-02-06 | 2010-08-05 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
| CN102374953A (en) * | 2010-08-20 | 2012-03-14 | 中国科学院金属研究所 | Indentation device for testing load-displacement curve of material |
| KR20120022143A (en) * | 2010-09-01 | 2012-03-12 | 주식회사 쓰리텍 | Measuring method for residual stress of concrete structure using indentation test apparaus and indenter used in the same |
| CN102288500A (en) * | 2011-05-09 | 2011-12-21 | 中国人民解放军装甲兵工程学院 | High-precision instrumented indenter and calculation method for indented-in-sample depth of diamond indenting head |
| CN105431987A (en) * | 2013-07-22 | 2016-03-23 | 富士胶片株式会社 | Method for fabrication of anisotropic conductive member and method for fabrication of anisotropic conductive bonding package |
| CN104198286A (en) * | 2014-09-11 | 2014-12-10 | 浙江工业大学 | Multi-pressure-head instrumented press-in test system |
| CN105842095A (en) * | 2016-03-22 | 2016-08-10 | 中国科学院金属研究所 | Computer controlled metal material indentation load-displacement data measurement system |
| CN105784238A (en) * | 2016-05-19 | 2016-07-20 | 北京大学 | Method for measuring material surface residual stress and system thereof |
| CN106078008A (en) * | 2016-06-24 | 2016-11-09 | 中车南京浦镇车辆有限公司 | A kind of intercity track train bogie residual stress safety control system and control method |
| CN210108574U (en) * | 2019-06-18 | 2020-02-21 | 浙江工业大学 | Four-pressure head assembly suitable for measuring non-isometric residual stress |
Non-Patent Citations (3)
| Title |
|---|
| YOUNG-CHEON KIM: "Modeling and Experimental Verification for Non-Equibiaxial Residual Stress Evaluated by Knoop Indentations", 《METALS AND MATERIALS INTERNATIONAL》 * |
| YOUNG-CHEON KIM: "Modeling and Experimental Verification for Non-Equibiaxial Residual Stress Evaluated by Knoop Indentations", 《METALS AND MATERIALS INTERNATIONAL》, 31 December 2016 (2016-12-31), pages 12 - 19 * |
| 周世友等: "显微硬度压痕法估算铝合金2A12残余应力", 《工业技术创新》, vol. 5, no. 4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964824A (en) * | 2020-08-19 | 2020-11-20 | 中国石油大学(华东) | Method for testing residual stress based on indentation energy difference |
| CN111964824B (en) * | 2020-08-19 | 2021-11-09 | 中国石油大学(华东) | Method for testing residual stress based on indentation energy difference |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1500929A3 (en) | Method and apparatus for inspecting a structure utilizing magnetically attracted probes | |
| CN110794040B (en) | Device and method for testing elastic modulus of hard alloy material | |
| CN110487635B (en) | Rapid testing system and method for core resistivity and wave velocity under loading state | |
| CN110108794A (en) | A kind of adjustable contact force type supersonic guide-wave damage detection system | |
| CN110261020A (en) | Suitable for measuring four pressure head components of nonequiaxial residual stress | |
| CN203117060U (en) | Stratometer | |
| CN105372119A (en) | Vibration cracking test device under energy control | |
| CN110261021A (en) | A kind of rotary press head component suitable for measuring nonequiaxial residual stress | |
| CN203163919U (en) | PVDF piezoelectric film force sensor for impact force dynamic measurement | |
| CN210971596U (en) | Unmanned aerial vehicle horn fatigue strength measuring device | |
| CN210293904U (en) | Quick testing arrangement of concrete fracture toughness | |
| CN202339240U (en) | Multipoint type piezoelectric pressure sensor | |
| CN209182151U (en) | A kind of apparent resistivity measuring device in rock damage and failure test | |
| CN210108574U (en) | Four-pressure head assembly suitable for measuring non-isometric residual stress | |
| CN108061822B (en) | Powder conductivity test equipment | |
| CN102778388A (en) | Tensile testing machine and cross section test board thereof | |
| CN214667432U (en) | Universal dynamic balance testing mandrel | |
| CN103293063B (en) | Vibration type point load tester | |
| CN102003381B (en) | Device and method for monitoring stroke of pumping cylinder and optimal arrangement method of cushion hole | |
| US11542809B2 (en) | Polished rod load cell | |
| WO2005108744A1 (en) | Measuring work performed by a reciprocating machine | |
| RU2148709C1 (en) | Device for diagnosing condition of productive wells | |
| CN208688452U (en) | Cable fault detection device based on ultrasonic transducer | |
| CN104948442A (en) | Method for indirectly measuring motor specific thrust and mechanical damping coefficient of linear compressor | |
| CN108775880A (en) | Cable fault detection device based on ultrasonic transducer and application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |