CN105675396A - Multifunctional uniaxial tensile test device for microstructure in-situ online observation - Google Patents
Multifunctional uniaxial tensile test device for microstructure in-situ online observation Download PDFInfo
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- CN105675396A CN105675396A CN201610071009.0A CN201610071009A CN105675396A CN 105675396 A CN105675396 A CN 105675396A CN 201610071009 A CN201610071009 A CN 201610071009A CN 105675396 A CN105675396 A CN 105675396A
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- 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
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- 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
- G01N3/02—Details
- G01N3/04—Chucks
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- 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
- G01N2203/0017—Tensile
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- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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Abstract
The invention relates to a multifunctional uniaxial tensile test device for microstructure in-situ online observation. The device comprises a rack, a power transmission mechanism, a clamping mechanism and a force measurement mechanism, wherein the clamping mechanism comprises three detachable fixing bases corresponding to a pair of sliding tables and fixation bases, three pins and three insulating washers; the detachable fixing bases are in an inverted-T shape, can be mounted on top surfaces or side surfaces of the sliding tables/ the fixation bases through concave holes in the sliding tables and the fixation bases and are fixed through the pins; an upper clamping block and a lower clamping block used for clamping a test sample are fixed on the first two detachable fixing bases; the three insulating washers separate the three detachable fixing bases from the corresponding sliding tables or the fixation bases; the clamping mechanism and the force measurement mechanism are mounted at the upper parts of the sliding tables and the fixation base at the right end of a screw. The test sample keeps balanced, and microstructure in-situ observation is performed in the horizontal plane of the test sample in the tensile process; the clamping mechanism and the force measurement mechanism are mounted on side surfaces of the sliding tables and the fixation base at the right end of the screw, the test sample stands on one side, and the microstructure in-situ observation in a side plane of the test sample can be realized in the tensile process.
Description
Technical field
The present invention relates to the multi-functional single shaft tensile test apparatus of a kind of microtexture original position online observation, belong to metal tensile test device technique field.
Background technology
Along with improving constantly of industrial automation level, the requirement of product performance is improved constantly, such as high strength, big unit elongation etc., material macroscopic view comprehensive mechanical property is always determined by its Microstructure Performance, in order to improve material macro-mechanical property and develop the more excellent novel material of performance, carrying out Fine Texture of Material research is effective way, and the prerequisite carrying out research obtains Fine Texture of Material experimental data under different experimental conditions, and trier traditional at present and be not suitable for Fine Texture of Material observation.
The Chinese patent that publication number is CN103575593A discloses a kind of in-situ uniaxial tension observation device for mesoscale metal material, this device comprises mechanical part, macroscopical mechanical parameters part of detecting and microdeformation field part of detecting, by transmission module transmission, sample two ends are applied tension load simultaneously, by microstructure change feature when microscopy apparatus and original position data acquisition system sample different distortion degree, by macro-mechanical property parameter under Force meansurement module and the corresponding texturizing condition of displacement measurement module acquisition. Measuring of this patent is applicable in sample horizontal plane microtexture change sample data, but can not implement for microtexture delta data in the plane of sample thickness place and the test of the in-situ observation under sample power on condition.
Therefore, prior art needs a kind of multifunctional in-situ observation experiment device that can meet different experiments and require badly.
Summary of the invention
The technical issues that need to address of the present invention are: the tensile test apparatus for microtexture original position online observation of the prior art, microtexture delta data in the plane of sample thickness place can not be obtained, meanwhile, as observed under power on condition, then there is potential safety hazard.
The present invention takes following technical scheme:
A kind of multi-functional single shaft tensile test apparatus for microtexture original position online observation, it is characterised in that: comprise frame, power drive mechanism, supporting mechanism, dynamometry mechanism;Described frame comprises base plate 1, motor fixing seat 2, pair of parallel guide rail 19,19-1, and described motor fixing seat 2 is arranged on base plate 1, and pair of parallel guide rail 19,19-1 are symmetricly set in the guide-track groove of motor 3 axis both sides; Described power drive mechanism comprises motor 3, leading screw 8, to slide unit 6,6-1, permanent seat 18, for clamping the trip bolt of test; Wherein, described motor 3 is arranged in motor fixing seat 2, and described leading screw 8 is arranged on base plate 1 by the leading screw permanent seat 5,18 at two ends, and leading screw 8 is coaxial with motor 3, and can rotate under motor 3 acts on; Slide unit 6,6-1 are arranged on pair of guide rails 19,19-1 by the guide-track groove of bottom by described one, slide unit 6,6-1 are arranged on the unsymmetrically screw thread at leading screw 8 two ends by described one respectively, leading screw 8 is threaded with slide unit, and leading screw 8 rotates and drives one to slide unit 6,6-1 constant speed reversing motion; Described clamping device comprises corresponding with one pair of slide unit 6,6-1 and permanent seat 18 respectively three can dismantle permanent seat 10,10-1,10-2, three pins 7,7-1,7-2, three insulation pad 9,9-1,9-2; Described permanent seat of dismantling is convex shape, is arranged on end face or the side of described slide unit/permanent seat 18 by the recessed hole on slide unit and permanent seat 18, and is realized fixing by pin; Permanent seat 10,10-1 can be dismantled for clamping the upper and lower clamping block of style 21 and be fixed on the first two; Described three insulation pad 9,9-1,9-2 can dismantle permanent seat 10 by three respectively, 10-1,10-2 separate with corresponding slide unit or permanent seat; Described dynamometry mechanism comprises slide block 15, force transducer 16, briquetting 17, briquetting screw 20-4; On the guide rail on the permanent seat the dismantled 10-1 top that described slide block 15 is arranged on the slide unit 6-1 of right side; Force transducer 16 right-hand end is fixed on by briquetting 17 and can dismantle on permanent seat by described briquetting screw 20-4, and force transducer 16 left end is arranged on slide block 15 by screw; When described sample 21 is not installed, motor 3 rotate drive two slide units 6,6-1 in opposite directions/opposing motion, right side slide unit 6-1 moves and drives the motion of its upper rall, and now slide block 15 keeps position constant because not stressing, and force transducer 16 numerical value is zero; After loading onto sample 21, when motor 3 rotates, the position being subject to power and keep it on guide rail because of slide block 15 is constant, and moves with right side slide unit 6-1, and force transducer 16 completes measuring of sample load value by power; Described support and dynamometry mechanism are arranged on slide unit and the top of leading screw right-hand member permanent seat 18, and sample keeps level, carries out microtexture in-situ observation in sample horizontal plane in drawing process; Described support and dynamometry mechanism are arranged on slide unit and the side of leading screw right-hand member permanent seat 18, and sample is edge-on, can realize microtexture in-situ observation in sample side in drawing process.
Further, described power drive mechanism also comprises shaft coupling 4, for connecting motor output shaft and leading screw.
Further, adopt one group of screw to be fixedly connected with by described upper and lower clamping block, for style 21 being clamped.
Further, in three insulation pad tops of being placed in two slide units 6,6-1 and silk permanent seat 18 respectively and square groove, in the square groove of described square handle insertion slide unit and the permanent seat 18 of dismantling permanent seat 10,10-1,10-2 bottom, by insulating, to dismantling, permanent seat positions pin; Described slide unit 6,6-1 are with can to dismantle permanent seat insulated from each other.
Further, described lower clamping block permanent seat 14 is installed on slide block 15 by screw, the lower clamping block 13 in right side is placed in lower clamping block permanent seat 14 deep gouge, is insulated by insulation pad therebetween, and is positioned in lower blessing block permanent seat 14 with insulation pin by lower clamping block 13; The lower clamping block 11 in left side is fixed on by screw 20-1 can be dismantled on permanent seat 10; Block 11,13 is clamped coaxial, and its clamping face is in same plane under two.
Further, described two upper clamping blocks 12,12-1 adopt screw to be fixed on lower clamping block.
Further, clamp structure adopts plug formula to connect, and utilizes pin to locate, and is convenient to dismounting and realizes 90 ° of rotations.
The useful effect of the present invention is:
1) provide the loading environment needed for differing materials microtexture in-situ observation and deceleration loading device, can be used for the uniaxial loading under sample power on condition,
2) microtexture in-situ observation in the plane of sample thickness place can be realized;
3) when can be used for uniaxial extension, material macro-mechanical property, microdeformation field deformation feature measure, and the basic experiment data needed for the corresponding relation set up between macromechanics, microdeformation field, the many persons of material properties measure and provide corresponding method.
4) 90 ° of commutations and insulation assembling be combined with each other, and assembly structure design is ingenious, and reliability height.
5) assembly structure fully considers parts machining and the convenience of style installation, easy to make, easy to use, has the prospect of wide popularization and application.
Accompanying drawing explanation
When Fig. 1 is style edge-on installation, the present invention is used for the front view of the multi-functional single shaft tensile test apparatus of microtexture original position online observation.
When Fig. 2 is the installation of style level, the present invention is used for the front view of the multi-functional single shaft tensile test apparatus of microtexture original position online observation.
Fig. 3 is the partial enlargement figure of Fig. 2.
When Fig. 4 is the installation of style level, the present invention is used for the front view of the multi-functional single shaft tensile test apparatus of microtexture original position online observation.
Fig. 5 is the three-view diagram of slide unit, wherein:
Fig. 5-1 is the front view of slide unit, and Fig. 5-2 is the left view of slide unit, and Fig. 5-3 is the vertical view of slide unit.
Fig. 6 is the schematic diagram of lower clamping block permanent seat, and wherein, Fig. 6-1 is front view, and Fig. 6-2 is vertical view.
Fig. 7 is three schematic diagram that can dismantle permanent seat, and wherein, 7-1 is the front view that fixed block can be dismantled in left side, and Fig. 7-2 is corresponding vertical view; Fig. 7-3 is the front view that detachable middle unloads fixed block, and Fig. 7-4 is corresponding vertical view; Fig. 7-5 is the front view that fixed block can be dismantled in right side, and Fig. 7-6 is corresponding vertical view;
Fig. 8 is the schematic diagram of lower clamping block, and wherein, Fig. 8-1 is the front view of the lower clamping block in left side, and Fig. 8-2 is the vertical view of the lower clamping block in left side, and Fig. 8-3 is the front view of the lower clamping block in right side, and Fig. 8-4 is the vertical view of the lower clamping block in right side.
Fig. 9 is the schematic diagram of style, and wherein, Fig. 9-1 is the horizontal plane view of style, and Fig. 9-2 is the side schematic view of style.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1-Figure 3, for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, in-situ tensile test when sample is energized, sample is not energized, sample horizontal positioned loads, sample is edge-on places loading can be realized, it is made up of frame, power transmission, clamping and dynamometry four major part.
Described frame is made up of base plate 1, motor fixing seat 2, guide rail 19,19-1;
Wherein, described motor fixing seat 2 is arranged on base plate 1, and described guide rail 19 and 19-1 and motor 3 axis being parallel, guide rail 19 and 19-1 are symmetricly set in the guide-track groove of motor 3 axis both sides.
Described motivation transfer motion part comprises motor 3, shaft coupling 4, leading screw 8, leading screw permanent seat 5, slide unit 6 and 6-1, permanent seat 18 and trip bolt 20;
Wherein, described motor 3 is arranged in motor fixing seat 2; Described leading screw 8 is arranged on base plate 1 by the leading screw permanent seat 5 and 18 at two ends, and leading screw 8 is coaxial with motor 3 axle, and is linked together by shaft coupling 4;
Wherein, described slide unit 6 and 6-1 are arranged on guide rail 19 and 19-1 by the guide-track groove of bottom, and slide unit 6 and 6-1 can along guide rail movements; Described slide unit 6 and 6-1 are arranged on the unsymmetrically screw thread at leading screw 8 two ends respectively, leading screw 8 and slide unit 6 and 6-1 link form for being threaded, two slide units 6 and 6-1 are arranged symmetrically in both sides, leading screw 8 center, leading screw 8 rotate ensure slide unit 6 and 6-1 constant speed in opposite directions/opposing motion.
Described blessing part by the pin 7 that insulate, 7-1,7-2 and 7-3, insulation pad 9,9-1 and 9-2,9-3 and 9-4, permanent seat 10 can be dismantled, 10-1 and 10-2, lower clamping block 11 and 13, upper clamping block 12 and 12-1, lower clamping block permanent seat 14, screw 20-1,20-2 and 20-3 form.
Wherein, in the top that described insulation pad 9,9-1 and 9-2 are placed in two slide units 6 and 6-1 and leading screw 8 right-hand member permanent seat 18 respectively and square groove, described dismantle in permanent seat 10, the square handle insertion 6 of 10-1 and 10-2 bottom and the square groove of 6-1 and leading screw 8 right-hand member permanent seat 18, by insulation pin 7,7-1 and 7-2 to permanent seat 10 can be dismantled, 10-1 and 10-2 position; Described slide unit 6 and 6-1 with can dismantle permanent seat 10 and 10-1 insulated from each other.
Wherein, described lower clamping block permanent seat 14 is installed on slide block 15 by screw, the lower clamping block 13 in right side is placed in lower clamping block permanent seat 14 deep gouge, is insulated by insulation pad 9-3 and 9-4 therebetween, and is positioned in lower blessing block permanent seat 14 with insulation pin 7-3 by lower clamping block 13; The lower clamping block 11 in left side is fixed on by screw 20-1 can be dismantled on permanent seat 10; Lower clamping block 11 and 13 is coaxial, and its clamping face is in same plane.
Wherein, described upper clamping block 12 and 12-1 adopt screw to be fixed on lower clamping block;
Described dynamometry part is made up of slide block 15, force transducer 16, briquetting 17, screw 20-4.
Wherein, on the guide rail on the permanent seat the dismantled 10-1 top that described slide block 15 is arranged on the slide unit 6-1 of right side; Force transducer 16 right-hand end is fixed on by briquetting 17 and can dismantle on permanent seat by described trip bolt 20-4, and force transducer 16 left end is arranged on slide block 15 by screw 20-3;
When described sample 21 is not installed, motor 3 rotate drive two slide units 6 and 6-1 in opposite directions/opposing motion, right side slide unit 6-1 moves and drives the motion of its upper rall, and now slide block 15 keeps position constant because not stressing, and force transducer 16 numerical value is zero; After loading onto sample 21, when motor 3 rotates, the position being subject to power and keep it on guide rail because of slide block 15 is constant, and with slide unit 6-1 mono-piece motion, force transducer 16 completes measuring of sample load value by power.
Described insulation pad 9 and insulation pin 7 make left side clamping end and slide unit 6 mutually insulated, described insulation pad 9-3,9-4 and insulation pin 7-3 make right side clamping end and dynamometry part and slide unit 6-1 mutually insulated, ensure that the frame of testing apparatus under sample 21 power on condition, power transmission, dynamometry part are not charged, it is ensured that equipment and personnel safety in test process.
As shown in Figure 1-Figure 3, clamping and dynamometry part being arranged on slide unit and the top of leading screw right-hand member permanent seat, sample keeps level, can realize microtexture in-situ observation in sample horizontal plane in drawing process;
As shown in Fig. 5-1,5-2,5-3 institute, clamping and dynamometry part being arranged on slide unit and the side of leading screw right-hand member permanent seat, sample is edge-on, can realize microtexture in-situ observation in sample side in drawing process.
For plane plate specimen shown in thickness Fig. 9-1,9-2, test process specifically comprises following step:
1) sample preparation: adopt Linear cut to process plate of material, polished in position in the middle of sample horizontal plane and side by employing manual type, polished finish, then carries out etching pit with metallographic etchant.
2) slide unit position adjustment: start motor, be adjusted in zone of reasonableness according to specimen length by the distance between two slide units, ensures that sample two clamps end clamping length enough, in case because clamping face is crossed little and loosening in sample loading procedure.
3) retained part is installed: according to sample inspection surface requirement, be arranged on by retained part directly over slide unit or slide unit side.
4) specimen clamping: unclamp screw and open and clamp block on two, sample is placed on the middle of twice clamping blocks, adjustment sample position so that it is axis and leading screw axis be upper and lower/and front and back overlap, and ensure that sample two ends clamping length is identical, then, tightening all screws to be fixed by sample, in pre-tight process, each screw preliminary tension wants evenly consistent, to ensure that sample is in drawing process, two ends uniform force, stretches without eccentric.
5) it is energized: as requirement of experiment is energized to sample, electrode need to be fixed on sample.
6) load: open servomotor and drive unsymmetrically threaded screw rod to rotate, thus drive two slide units to do the opposing motion of constant speed on the slideway of base, namely make sample two ends add head to move at the uniform velocity in opposite direction, thus ensure that sample mid-way is substantially constant, it is provided that the in-situ observation region that immobilizes. Test generally adopts Bit andits control; determine to shut down point of observation according to leading screw displacement; in stopping process; auxiliary scope is utilized to carry out taking pictures imaging by the microtexture in fixing visual field a certain on sample; after imaging terminates, continue to load, then shut down and take pictures; repeat above step, until sample fracture. Leading screw displacement and sample force value can gather in real time, can obtain material macro-mechanical property curve accordingly.
In whole test process, microtexture variation characteristic can carry out Real-Time Monitoring by micro-imaging equipment such as microscopes, and the power-displacement image of test is obtained in conjunction with debugging software, thus set up the change of the microtextures such as the metallic gold phase constitution under corresponding stretching action power, obtain macromechanics and the one-to-one relationship of microtexture distortion field.
Claims (7)
1. the multi-functional single shaft tensile test apparatus for microtexture original position online observation, it is characterised in that:
Comprise frame, power drive mechanism, supporting mechanism, dynamometry mechanism;
Described frame comprises base plate (1), motor fixing seat (2), pair of parallel guide rail (19,19-1), described motor fixing seat (2) is arranged on base plate (1), and pair of parallel guide rail (19,19-1) is symmetricly set in the guide-track groove of motor (3) axis both sides;
Described power drive mechanism comprises motor (3), leading screw (8), to slide unit (6,6-1), permanent seat (18), for clamping the trip bolt of test; Wherein, described motor (3) is arranged in motor fixing seat (2), described leading screw (8) is arranged on base plate (1) by the leading screw permanent seat (5,18) at two ends, leading screw (8) is coaxial with motor (3), and can rotate under motor (3) acts on;Slide unit (6,6-1) is arranged in pair of guide rails (19,19-1) by the guide-track groove of bottom by described one, slide unit (6,6-1) is arranged on the unsymmetrically screw thread at leading screw (8) two ends by described one respectively, leading screw (8) is threaded with slide unit, and leading screw (8) rotates and drives one to slide unit (6,6-1) constant speed reversing motion;
Described clamping device comprises corresponding with one pair of slide unit (6/6-1) and permanent seat (18) respectively three can dismantle permanent seat (10,10-1,10-2), three pins (7,7-1,7-2), three insulation pads (9,9-1,9-2); Described permanent seat of dismantling is convex shape, is arranged on end face or the side of described slide unit/permanent seat (18) by the recessed hole on slide unit and permanent seat (18), and is realized fixing by pin; Permanent seat (10,10-1) can be dismantled for clamping the upper and lower clamping block of style (21) and be fixed on the first two; Described three insulation pads (9,9-1,9-2) can be dismantled three permanent seat (10,10-1,10-2) respectively and be separated with corresponding slide unit or permanent seat;
Described dynamometry mechanism comprises slide block (15), force transducer (16), briquetting (17), briquetting screw (20-4); On the guide rail on the permanent seat dismantled (10-1) top that described slide block (15) is arranged on right side slide unit (6-1); Force transducer (16) right-hand end is fixed on by briquetting (17) and can dismantle on permanent seat by described briquetting screw (20-4), and force transducer (16) left end is arranged on slide block (15) by screw;
When described sample (21) is not installed, motor (3) rotates and drives two slide units (6,6-1) in opposite directions/opposing motion, right side slide unit (6-1) motion drives the motion of its upper rall, now slide block (15) keeps position constant because not stressing, and force transducer (16) numerical value is zero; After loading onto sample (21), when motor (3) rotates, because slide block (15) keeps its position on guide rail constant by power, and moving with right side slide unit (6-1), force transducer (16) completes measuring of sample load value by power;
Described support and dynamometry mechanism are arranged on slide unit and the top of leading screw right-hand member permanent seat (18), and sample keeps level, carries out microtexture in-situ observation in sample horizontal plane in drawing process;
Described support and dynamometry mechanism are arranged on slide unit and the side of leading screw right-hand member permanent seat (18), and sample is edge-on, can realize microtexture in-situ observation in sample side in drawing process.
2. as claimed in claim 1 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterised in that: described power drive mechanism also comprises shaft coupling (4), for connecting motor output shaft and leading screw.
3. as claimed in claim 1 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterised in that: adopt one group of screw to be fixedly connected with by described upper and lower clamping block, for style (21) being clamped.
4. as claimed in claim 1 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterized in that: in the top that three insulation pads are placed in two slide units (6,6-1) and silk permanent seat (18) respectively and square groove, the described square handle insertion slide unit dismantling permanent seat (10,10-1,10-2) bottom is with, in the square groove of permanent seat (18), by insulating, to dismantling, permanent seat positions pin; Described slide unit (6,6-1) is with can to dismantle permanent seat insulated from each other.
5. as claimed in claim 1 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterized in that: described lower clamping block permanent seat (14) is installed on slide block (15) by screw, clamping block (13) under right side is placed in lower clamping block permanent seat (14) deep gouge, therebetween insulated by insulation pad, and with insulation pin, lower clamping block (13) is positioned in lower blessing block permanent seat (14);Clamp block (11) under left side to be fixed on by screw (20-1) and can dismantle on permanent seat (10); Block (11,13) is clamped coaxial, and its clamping face is in same plane under two.
6. as claimed in claim 5 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterised in that: described two clamp block (12,12-1) and adopts screw to be fixed on lower clamping block.
7. as claimed in claim 1 for the multi-functional single shaft tensile test apparatus of microtexture original position online observation, it is characterised in that: clamp structure adopts plug formula to connect, and utilizes pin to locate, and is convenient to dismounting and realizes 90 ° of rotations.
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| CN106053213A (en) * | 2016-08-02 | 2016-10-26 | 上海交通大学 | Manual loading device for in-situ tensile test by industrial CT (computed tomography) |
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| CN106053213A (en) * | 2016-08-02 | 2016-10-26 | 上海交通大学 | Manual loading device for in-situ tensile test by industrial CT (computed tomography) |
| CN106053213B (en) * | 2016-08-02 | 2019-12-10 | 上海交通大学 | Manual loading device for industrial CT (computed tomography) in-situ tensile test |
| CN109085077A (en) * | 2018-10-26 | 2018-12-25 | 山东省产品质量检验研究院 | A kind of paraglider drawstring sample bending fatigue testing device |
| CN109085077B (en) * | 2018-10-26 | 2024-03-22 | 山东省产品质量检验研究院 | Bending fatigue test device for paraglider pull rope sample |
| CN109738274A (en) * | 2019-01-22 | 2019-05-10 | 南京航空航天大学 | Fibre reinforced composites microscopic test loading device |
| CN109883792A (en) * | 2019-04-02 | 2019-06-14 | 乔治费歇尔金属成型科技（苏州）有限公司 | Clamping device for plate type tensile specimen processing |
| CN112326430A (en) * | 2020-10-30 | 2021-02-05 | 天津大学 | OCT (optical coherence tomography) tensile test device with water tank and test method |
| CN112326430B (en) * | 2020-10-30 | 2023-01-20 | 天津大学 | OCT (optical coherence tomography) tensile test device with water tank and test method |
| CN112557184A (en) * | 2020-12-10 | 2021-03-26 | 福建中维动力科技股份有限公司 | Structural strength testing device of transmission |
| CN115308251A (en) * | 2022-10-12 | 2022-11-08 | 中国科学技术大学 | Modular synchronous detection device used with low-field nuclear magnetic resonance spectrometer |
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