CN105910901A - Compression stress relaxation test apparatus for rubber test specimens - Google Patents
Compression stress relaxation test apparatus for rubber test specimens Download PDFInfo
- Publication number
- CN105910901A CN105910901A CN201610290150.XA CN201610290150A CN105910901A CN 105910901 A CN105910901 A CN 105910901A CN 201610290150 A CN201610290150 A CN 201610290150A CN 105910901 A CN105910901 A CN 105910901A
- Authority
- CN
- China
- Prior art keywords
- frame
- static
- stress relaxation
- compression stress
- test piece
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a compression stress relaxation test apparatus for rubber test specimens. The compression stress relaxation test apparatus comprises an electronic universal testing machine and a test specimen loading component. The electronic universal testing machine comprises a movable transverse beam and a static transverse beam, a test chamber is arranged between the movable transverse beam and the static transverse beam, a connecting rod which extends from the top of the test chamber to an inner cavity of the test chamber is arranged on the static transverse beam, a draw bar which extends from the bottom of the test chamber to the inner cavity of the test chamber is arranged on the movable transverse beam, the test specimen loading component is positioned in the test chamber, the top of the test specimen loading component is connected with the connecting rod, the bottom of the test specimen loading component is connected with the draw bar, and the test specimen loading component can be driven by the draw bar to apply compression load on a rubber test specimen in the test specimen loading component. The compression stress relaxation test apparatus has the advantages that the compression stress relaxation test apparatus is simple in structure, easy to mount, convenient to operate and high in accuracy class, and the rubber test specimens, particularly small rubber test specimens, can be tested by the aid of the compression stress relaxation test apparatus at various temperatures.
Description
Technical field
The present invention relates to the compression stress relaxation experimental technique of rubber test piece, particularly relate to the compression stress relaxation experimental rig of a kind of rubber test piece.
Background technology
Elastomeric material, because of characteristics such as its good elasticity, insulating properties and sealings, is widely used in the industry such as tire industry, footwear industry, damper and sealing structure and life.When elastomeric material is applied to seal structure, rubber seal can be squeezed because of the deformation of other structures, and when other malformation recovers, elastomeric material there will be resilience not exclusively or the phenomenon of not resilience, thus causes seal failure.Therefore, this rubber-like materials needs to test through compression stress relaxation, to examine its compression performance.Directly intercept sealing ring and prepare relaxation test test specimen, not only prepare convenient and swift, and the impact of test specimen and real structure part scale effect can be got rid of.
The instruments such as compression set, Force measurement device, chamber and temperature measuring equipment that elastomeric material compression stress relaxation is tested by GB GB/T 1685-2008 propose concrete technical requirement respectively.Current compression stress relaxation experimental rig is made up of multi-part, and structure is complicated, complex operation, is a set of special equipment being only used for compression stress relaxation test, and needs to prepare special testpieces, it is impossible to uses the subsized specimen directly prepared by sealing ring.Electronic type universal testing machine is mechanics fundamental test equipment, controls and certainty of measurement grade is better than 0.5 grade, and stability is fine, is generally used for stretching, compression test.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, be easily installed, easy to operate, accuracy class is high, can realize the most small-sized rubber test piece of rubber test piece carries out the compression stress relaxation experimental rig tested at each temperature.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of compression stress relaxation experimental rig of rubber test piece, including electronic type universal testing machine and test specimen loading component, described electronic type universal testing machine includes dynamic crossbeam and quiet crossbeam, it is provided with chamber between described dynamic crossbeam and quiet crossbeam, described quiet crossbeam is provided with the connecting rod extending its inner chamber from chamber top, described dynamic crossbeam is provided with bottom chamber the pull bar extending its inner chamber, described test specimen loading component is positioned at chamber, the top of test specimen loading component is connected with connecting rod, the bottom of test specimen loading component is connected with pull bar, described pull bar orders about test specimen loading component and its interior rubber test piece is applied compressive load.
Further improvement as technique scheme:
Described test specimen loading component includes motion frame, static frame and holds thing frame, described static arch is affixed with connecting rod, the described thing frame that holds is arranged in static frame, described motion frame bottom is connected with pull bar and motion frame is mutually socketed with static frame, the described thing frame that holds is provided with and passes the pressure rod extending motion frame from its top, and described pull bar orders about motion frame and downwards and drives the pressure rod rubber test piece to holding in thing frame to apply compressive load.
Described motion frame includes upper moving plate, lower moving plate and two action-oriented bars, described upper moving plate and lower moving plate are by two action-oriented bar affixed formation frame like structure, described upper moving plate and two action-oriented bars all with static frame pivot bush unit, pressure rod is withstood in the bottom of described upper moving plate, and described lower moving plate is connected with pull bar.
Described static frame includes static plate, lower static plate and two quiet guide posts, described upper static plate and lower static plate are by two quiet guide post affixed formation frame like structure, described lower static plate and two quiet guide posts all with motion frame pivot bush unit, described upper static plate is connected with connecting rod, described in hold thing frame and be installed in above lower static plate.
Described upper moving plate and two quiet guide post pivot bush units, two action-oriented bars and lower static plate pivot bush unit.
The described thing frame that holds includes framework, plummer and described pressure rod, and described framework is installed in lower static plate, and described plummer is installed in framework, and described pressure rod passes from framework top and extends upper moving plate bottom surface and pressure rod is coaxially disposed with plummer.
Being equiped with gag lever post on described pressure rod, described framework offers spacing hole, described gag lever post extends in spacing hole.
Compared with prior art, it is an advantage of the current invention that:
1, the compression stress relaxation experimental rig of the rubber test piece of the present invention, test specimen loading component can mate and not destroy original structure and the performance of electronic type universal testing machine with electronic type universal testing machine, the loading of electronic type universal testing machine is continuing with test module, it is ensured that the control of test and certainty of measurement.
2, the compression stress relaxation experimental rig of the rubber test piece of the present invention, pull bar orders about test specimen loading component to its interior rubber test piece pressurization,, according to the compressible standard specimen of the different size of pressure rod and customization test specimen, it is suitable for sample dimensions wide ranges (Φ 4-Φ 24mm).
3, the compression stress relaxation experimental rig of the rubber test piece of the present invention, a whole set of test specimen loading component puts into chamber, simple in construction, be easily installed, easy to operate, need to open temperature regulation according to test temperature, achieving compression stress relaxation test at each temperature, experimental condition is applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the compression stress relaxation experimental rig of rubber test piece of the present invention.
Fig. 2 be rubber test piece of the present invention compression stress relaxation experimental rig in the structural representation of test specimen loading component.
Fig. 3 be rubber test piece of the present invention compression stress relaxation experimental rig in motion frame and static frame socket join structure schematic diagram.
Fig. 4 be rubber test piece of the present invention compression stress relaxation experimental rig in hold the main sectional view of thing frame.
Fig. 5 be rubber test piece of the present invention compression stress relaxation experimental rig in hold thing frame sectional view.
In figure, each label represents:
1, electronic type universal testing machine；11, dynamic crossbeam；111, pull bar；12, quiet crossbeam；121, connecting rod；13, chamber；2, test specimen loading component；21, motion frame；211, upper moving plate；212, lower moving plate；213, action-oriented bar；22, static frame；221, upper static plate；222, lower static plate；223, quiet guide post；23, thing frame is held；231, framework；2311, spacing hole；232, plummer；233, pressure rod；234, gag lever post；3, rubber test piece.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Fig. 1 to Fig. 5 shows a kind of embodiment of the compression stress relaxation experimental rig of rubber test piece of the present invention, this experimental rig includes electronic type universal testing machine 1 and test specimen loading component 2, electronic type universal testing machine 1 includes dynamic crossbeam 11 and quiet crossbeam 12, move and between crossbeam 11 and quiet crossbeam 12, be provided with chamber 13, quiet crossbeam 12 is provided with the connecting rod 121 extending its inner chamber from chamber 13 top, dynamic crossbeam 11 is provided with the pull bar 111 extending its inner chamber bottom chamber 13, test specimen loading component 2 is positioned at chamber 13, the top of test specimen loading component 2 is connected with connecting rod 121, the bottom of test specimen loading component 2 is connected with pull bar 111, pull bar 111 orders about test specimen loading component 2 and its interior rubber test piece 3 is applied compressive load.During use, only test specimen loading component 2 need to be arranged in chamber 13, again the top of test specimen loading component 2 is connected with connecting rod 121, the bottom of test specimen loading component 2 is connected with pull bar 111 can complete install, this test specimen loading component 2 can mate and not destroy original structure and the performance of electronic type universal testing machine 1 with electronic type universal testing machine 1, it is ensured that the loading of electronic type universal testing machine 1 is continuing with test module；Pull bar 111 orders about test specimen loading component 2 and pressurizes its interior rubber test piece 3, will the extended state of electronic type universal testing machine 1 be changed into rubber test piece 3 be compressed axially state, to realize the most small-sized rubber test piece 3(of rubber test piece 3 a diameter of Φ 4-Φ 12mm) compression-loaded；A whole set of test specimen loading component 2 puts into chamber 13, simple in construction, be easily installed, easy to operate.Need to open temperature regulation according to temperature during test, it is achieved that the compression stress relaxation test at a temperature of each.
In the present embodiment, test specimen loading component 2 includes motion frame 21, static frame 22 and holds thing frame 23, static frame 22 top is affixed with connecting rod 121, hold thing frame 23 to be arranged in static frame 22, it is connected with pull bar 111 bottom motion frame 21 and motion frame 21 is mutually socketed with static frame 22, holding thing frame 23 to be provided with and pass the pressure rod 233 extending motion frame 21 from its top, pull bar 111 orders about motion frame 21 and downwards and drives pressure rod 233 that the rubber test piece 3 held in thing frame 23 is applied compressive load.In this structure, pull bar 111 orders about motion frame 21 and downwards and drives pressure rod 233 to move downward, and hold thing frame 23 and static frame 22 does not the most produce motion, i.e. pressure rod 233 can form compression stroke with holding thing frame 23 inner chamber, rubber test piece 3 is positioned at this compression stroke, therefore can be compressed rubber test piece 3 during pressure rod 233 Continued downward motion loading, control decrement by the dynamic crossbeam 11 of electronic type universal testing machine 1, thus realize the compression stress relaxation test of rubber test piece 3.
In the present embodiment, motion frame 21 includes upper moving plate 211, lower moving plate 212 and two action-oriented bars 213, upper moving plate 211 and lower moving plate 212 are by two action-oriented bar 213 affixed formation frame like structure, upper moving plate 211 and two action-oriented bars 213 all with static frame 22 pivot bush unit, pressure rod 233 is withstood in the bottom of upper moving plate 211, and lower moving plate 212 is connected with pull bar 111.In this structure, upper moving plate 211 and lower moving plate 212 are by two action-oriented bar 213(double threaded screws) and the rectangular box-like structure of the affixed formation of nut, pull bar 111 drives this rectangular box-like downward movement, thus driving pressure rod 233 to be compressed rubber test piece 3 downwards loading, it is simple and practical.
In the present embodiment, static frame 22 includes static plate 221, lower static plate 222 and two quiet guide posts 223, upper static plate 221 and lower static plate 222 are by two quiet guide post 223 affixed formation frame like structure, lower static plate 222 and two quiet guide posts 223 all with motion frame 21 pivot bush unit, upper static plate 221 is connected with connecting rod 121, holds thing frame 23 and is installed in above lower static plate 222.In this structure, upper static plate 221 and lower static plate 222 are by two quiet guide post 223(double threaded screws) and the rectangular box-like structure of the affixed formation of nut, connecting rod 121 is overall after being connected with static frame 22 keeps inactive state, when pull bar 111 drives pressure rod 233 to move downward, the rubber test piece 3 held in thing frame 23 can be compressed loading by this pressure rod 233, and it is simple and practical.
In the present embodiment, upper moving plate 211 and two quiet guide post 223 pivot bush units, two action-oriented bars 213 and lower static plate 222 pivot bush unit.By the version of this kind of sockets the most double, limit laterally collecting together of motion frame 21, to ensure the directionality of motion frame 21 compression motion, thus ensure the accuracy of compression test.
In the present embodiment, hold thing frame 23 and include framework 231, plummer 232 and pressure rod 233, framework 231 is installed in lower static plate 222, plummer 232 is installed in framework 231, and pressure rod 233 passes from framework 231 top and extends upper moving plate 211 bottom surface and pressure rod 233 is coaxially disposed with plummer 232.This framework 231 1 aspect is used for installing plummer 232, and other direction is equivalent to guide housing, to ensure the alignment of pressure rod 233 and plummer 232.
In the present embodiment, pressure rod 233 being equiped with gag lever post 234, framework 231 offers spacing hole 2311, gag lever post 234 extends in spacing hole 2311.By this gag lever post 234 and spacing hole 2311 with the use of, can the axially-movable of pressure rod 233 be carried out spacing, it is ensured that the controllability of axially-movable.
Although the present invention discloses as above with preferred embodiment, but is not limited to the present invention.Any those of ordinary skill in the art, in the case of without departing from technical solution of the present invention scope, technical solution of the present invention is made many possible variations and modification by the technology contents that all may utilize the disclosure above, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every content without departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall in the range of technical solution of the present invention is protected.
Claims (7)
- null1. the compression stress relaxation experimental rig of a rubber test piece，It is characterized in that: include electronic type universal testing machine (1) and test specimen loading component (2)，Described electronic type universal testing machine (1) includes dynamic crossbeam (11) and quiet crossbeam (12)，Chamber (13) it is provided with between described dynamic crossbeam (11) and quiet crossbeam (12)，Described quiet crossbeam (12) is provided with the connecting rod (121) extending its inner chamber from chamber (13) top，Described dynamic crossbeam (11) is provided with the pull bar (111) extending its inner chamber from chamber (13) bottom，Described test specimen loading component (2) is positioned at chamber (13)，The top of test specimen loading component (2) is connected with connecting rod (121)，The bottom of test specimen loading component (2) is connected with pull bar (111)，Described pull bar (111) orders about test specimen loading component (2) and its interior rubber test piece (3) is applied compressive load.
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 1, it is characterized in that: described test specimen loading component (2) includes motion frame (21), static frame (22) and hold thing frame (23), described static frame (22) top is affixed with connecting rod (121), the described thing frame (23) that holds is arranged in static frame (22), described motion frame (21) bottom is connected with pull bar (111), and motion frame (21) is mutually socketed with static frame (22), the described thing frame (23) that holds is provided with and passes the pressure rod (233) extending motion frame (21) from its top, described pull bar (111) orders about motion frame (21) and downwards and drives the pressure rod (233) rubber test piece (3) to holding in thing frame (23) to apply compressive load.
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 2, it is characterized in that: described motion frame (21) includes upper moving plate (211), lower moving plate (212) and two action-oriented bars (213), described upper moving plate (211) and lower moving plate (212) are by two action-oriented bar (213) affixed formation frame like structure, described upper moving plate (211) and two action-oriented bars (213) all with static frame (22) pivot bush unit, pressure rod (233) is withstood in the bottom of described upper moving plate (211), and described lower moving plate (212) is connected with pull bar (111).
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 3, it is characterized in that: described static frame (22) includes static plate (221), lower static plate (222) and two quiet guide posts (223), described upper static plate (221) and lower static plate (222) are by two quiet guide post (223) affixed formation frame like structure, described lower static plate (222) and two quiet guide posts (223) all with motion frame (21) pivot bush unit, described upper static plate (221) is connected with connecting rod (121), the described thing frame (23) that holds is installed in lower static plate (222) above.
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 4, it is characterised in that: described upper moving plate (211) and two quiet guide post (223) pivot bush units, two action-oriented bars (213) and lower static plate (222) pivot bush unit.
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 5, it is characterized in that: described in hold thing frame (23) and include framework (231), plummer (232) and described pressure rod (233), described framework (231) is installed in lower static plate (222), in described plummer (232) is installed in framework (231), described pressure rod (233) passes from framework (231) top and extends upper moving plate (211) bottom surface and pressure rod (233) is coaxially disposed with plummer (232).
- The compression stress relaxation experimental rig of rubber test piece the most according to claim 6, it is characterized in that: on described pressure rod (233), be equiped with gag lever post (234), offering spacing hole (2311) in described framework (231), described gag lever post (234) extends in spacing hole (2311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290150.XA CN105910901A (en) | 2016-05-04 | 2016-05-04 | Compression stress relaxation test apparatus for rubber test specimens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290150.XA CN105910901A (en) | 2016-05-04 | 2016-05-04 | Compression stress relaxation test apparatus for rubber test specimens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105910901A true CN105910901A (en) | 2016-08-31 |
Family
ID=56753195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610290150.XA Pending CN105910901A (en) | 2016-05-04 | 2016-05-04 | Compression stress relaxation test apparatus for rubber test specimens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105910901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644771A (en) * | 2017-01-17 | 2017-05-10 | 吉林大学 | Measurement device of rubber volume modulus based on liquid pressure and measurement method |
| CN108827779A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the compression stress relaxation test device and test method of rubber material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144564A (en) * | 1979-04-27 | 1980-11-11 | Shimadzu Corp | Material testing machine |
| JPS58210539A (en) * | 1982-05-31 | 1983-12-07 | Shimadzu Corp | Testing machine of material |
| CN201464292U (en) * | 2009-07-01 | 2010-05-12 | 燕山大学 | Clamp for tests on porous light-weight materials |
| CN102589596A (en) * | 2012-02-27 | 2012-07-18 | 成都九鼎科技(集团)有限公司 | Tool capable of reversing applied force |
| CN102607980A (en) * | 2012-03-14 | 2012-07-25 | 安徽省电力科学研究院 | Tension-pressure conversion aid for calibration of tensile machine |
| CN105043861A (en) * | 2015-09-15 | 2015-11-11 | 哈尔滨工业大学（威海） | High-low-temperature stretching rotary compression fixture for stretching test machine |
| CN105510148A (en) * | 2014-09-27 | 2016-04-20 | 中国石油化工集团公司 | Device for testing packer rubber barrel contact stress at high temperature and method thereof |
-
2016
- 2016-05-04 CN CN201610290150.XA patent/CN105910901A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144564A (en) * | 1979-04-27 | 1980-11-11 | Shimadzu Corp | Material testing machine |
| JPS58210539A (en) * | 1982-05-31 | 1983-12-07 | Shimadzu Corp | Testing machine of material |
| CN201464292U (en) * | 2009-07-01 | 2010-05-12 | 燕山大学 | Clamp for tests on porous light-weight materials |
| CN102589596A (en) * | 2012-02-27 | 2012-07-18 | 成都九鼎科技(集团)有限公司 | Tool capable of reversing applied force |
| CN102607980A (en) * | 2012-03-14 | 2012-07-25 | 安徽省电力科学研究院 | Tension-pressure conversion aid for calibration of tensile machine |
| CN105510148A (en) * | 2014-09-27 | 2016-04-20 | 中国石油化工集团公司 | Device for testing packer rubber barrel contact stress at high temperature and method thereof |
| CN105043861A (en) * | 2015-09-15 | 2015-11-11 | 哈尔滨工业大学（威海） | High-low-temperature stretching rotary compression fixture for stretching test machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644771A (en) * | 2017-01-17 | 2017-05-10 | 吉林大学 | Measurement device of rubber volume modulus based on liquid pressure and measurement method |
| CN106644771B (en) * | 2017-01-17 | 2019-06-11 | 吉林大学 | A kind of measuring device and measuring method of the rubber volume modulus based on fluid pressure |
| CN108827779A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the compression stress relaxation test device and test method of rubber material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2018048998A5 (en) | ||
| CN104297065B (en) | A kind of Piezoelectric Driving micro-stretching test device | |
| CN102607955B (en) | Biaxial compression test device for fractured rock mass | |
| CN102607946A (en) | Device for large-scale true tri-axial test of original grading rockfill body and use method of method | |
| CN104677584B (en) | Simulative testing device and method of drilling tool thread dynamic fatigue | |
| CN105910901A (en) | Compression stress relaxation test apparatus for rubber test specimens | |
| US10161840B2 (en) | Device for evaluation of the working surface fretting wear characteristics | |
| TW200707610A (en) | Electric connection device | |
| CN102636394A (en) | Compressive stress loading and deformation measurement device and measurement method for deformation of test piece under compressive stress | |
| CN105738021B (en) | Straight line Loading for actuator device | |
| CN103983512A (en) | Hopkinson pulling and pressing integrated experimental device | |
| CN104483191A (en) | Cement compression resistance clamp for compression testing machine and usage method of clamp | |
| CN110307960A (en) | A kind of shock tube active film breaking unit | |
| KR101684419B1 (en) | Device for testing spherical bearing mounted in air craft | |
| CN106092874A (en) | A kind of measurement apparatus | |
| CN105865920A (en) | Four-direction equally-loaded stress application device for cellular materials | |
| CN201628598U (en) | Multifunctional push-pull force testing device | |
| RU2542639C2 (en) | Lever unit for static and dynamic testing of materials under conditions of uniaxial compression | |
| CN208109673U (en) | A kind of adhesive bonding force test device | |
| CN203414350U (en) | Fatigue compressive deformation performance tester for shoe sole | |
| CN208012979U (en) | A kind of pilot system measuring building enclosure system connector transient state bearing capacity | |
| RU2612197C1 (en) | Test rig for hardness of sample made of toxic material | |
| CN112213191A (en) | Sealant detection device | |
| CN201716241U (en) | Constant-temperature compressive loading device for universal material testing machine | |
| CN109991106A (en) | A kind of pilot system measuring building enclosure system connector transient state bearing capacity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |