CN106053250A - Device and method for measuring superhigh temperature flexure elasticity modulus and fracture strain of material - Google Patents

Device and method for measuring superhigh temperature flexure elasticity modulus and fracture strain of material Download PDF

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CN106053250A
CN106053250A CN201610377535.XA CN201610377535A CN106053250A CN 106053250 A CN106053250 A CN 106053250A CN 201610377535 A CN201610377535 A CN 201610377535A CN 106053250 A CN106053250 A CN 106053250A
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deformation
water
temperature
protective sleeve
elasticity
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CN106053250B (en
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卢克非
章妮
李西颜
张涛
王晓薇
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China Academy of Launch Vehicle Technology CALT
Aerospace Research Institute of Materials and Processing Technology
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Aerospace Research Institute of Materials and Processing Technology
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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
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • 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
    • 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
    • G01N2203/0023—Bending
    • 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
    • G01N2203/0058—Kind of property studied
    • G01N2203/006—Crack, flaws, fracture or rupture
    • G01N2203/0067—Fracture or rupture
    • 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
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G01N2203/0226—High temperature; Heating means

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • 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 device for measuring superhigh temperature flexure elasticity modulus and fracture strain of a material. The device comprises a load transmitting structure, a deformation transmitting structure and a deformation sensor. The problem that in the test environment with the temperature of 1500 DEG or above, temperature of the environment where a traditional deformation sensor is located exceeds service temperature, and measurement cannot be carried out through the traditional deformation sensor is solved. A water cooling protective sleeve is connected to a hot end pressing rod, heat conduction and heat radiation to the deformation sensor by the outside can be effectively blocked, which is beneficial for reducing the temperature of the deformation sensor, the temperature deformation sensor is made to be 50 DEG C or below, and then the deformation sensor can measure flexure elasticity modulus and fracture strain of the material in the superhigh temperature environment.

Description

Measure the material ultra-temperature modulus of elasticity in static bending and the device and method of breaking strain
Technical field
The present invention relates to a kind of device and method measuring material ultra-temperature bending modulus and breaking strain, belong to material power Learn performance test field.
Background technology
Along with the fast development near space hypersonic aircraft field, aircraft is with hypersonic (> 5Ma) at air In Ceng fly, the hot-end component such as nose cone, nose of wing bears serious Aerodynamic Heating, harsh spot temperature up to more than 1800 DEG C, The material can being on active service this temperature section proposes the highest requirement, has promoted carbon/carbon, ceramic matric composite, superhigh temperature to make pottery Ceramic material and the development of refractory metal material.Therefore, the mechanics in Flight Vehicle Design and new material development, under ultra-high temperature condition Performance test is the key issue being badly in need of solving, it is thus achieved that material mechanical performance data under ultra-high temperature condition is to ensure that aircraft Design correctness and the requisite basic demand of service safety.
At present, the method for testing to hot bending performance only has this test event of bending strength both at home and abroad, there is no curved Modulus in elasticity in bending and breaking strain the two key project.Main cause is under ultra-high temperature condition, a lot of more than 1500 DEG C Test is mostly carried out in vacuum (noble gas) stove, does not has air-cooled radiating condition of Denging, and extensometer works in vacuum (noble gas) stove, Radiate under superhigh temperature test environment, the conduction of heat high temperature that brings is beyond existing strain chip, inductance type, condenser type extensometer The highest service temperature, therefore cannot be carried out the modulus of elasticity in static bending and the isoparametric measurement of breaking strain.
Patent of invention CN 105092372A discloses " test button strain in a kind of high temperature and high pressure environment of monitoring in real time System and method ", but said method has the disadvantage that first, and above-mentioned strain measurement method is applicable to metal tensile test, And it is not suitable for the bend test of fragile material.Second, above-mentioned strain measurement method, the deformation of sample is led to high temperature furnace Outward, connecting portion is more, and deformation loss is relatively big, and for the test button of big strain, its precision still can meet requirement, but for super The ceramic base of high-temperature service environment, carbon/carbon, superhigh temperature ceramics sample, its elastic modelling quantity is higher, and breaking strain is low, surveys deformation Accuracy of measurement requires height, and patent disclosed above is not suitable for the material bending strain measurement of hyperthermal environments.
Summary of the invention
The technical problem to be solved: for overcoming the deficiencies in the prior art, it is provided that a kind of measurement material superelevation Temperature bending modulus and the device and method of breaking strain.
The technical solution of the present invention:
Measure the material ultra-temperature modulus of elasticity in static bending and the device of breaking strain, including load transfer structure, displacement transfer Structure and deformation-sensor,
Described load transfer structure includes seaming chuck, push-down head, hot junction down-pressed pole and water-cooling protective sleeve, and push-down head center sets Having through hole, push-down head is placed bend specimen, seaming chuck is positioned at bend specimen overcentre, and water-cooling protective sleeve is hollow water-cooled work Font structure, including upper and lower crossbeam and middle standing pillar, for blocking the heat of hot junction down-pressed pole conduction, water-cooling protective sleeve center Having through hole, down-pressed pole center, hot junction has through hole, and down-pressed pole one end, hot junction is connected with water-cooling protective sleeve upper end, makes to press under hot junction Bar communicates with the through hole of water-cooling protective sleeve, and the hot junction down-pressed pole other end is connected with push-down head bottom surface, makes the through hole of hot junction down-pressed pole Communicate with the through hole of push-down head；
Displacement transfer structure includes displacement transfer bar, fixation clamp and mobile folder, and displacement transfer bar is placed in water-cooling protective sleeve, heat In the through hole of end down-pressed pole, and the through hole passing push-down head contacts with the bottom center of bend specimen, and fixation clamp is fixed on water-cooled On protection set middle standing pillar, mobile folder is connected with displacement transfer bar, and the two can synchronize the most sliding along water-cooling protective sleeve middle standing pillar Dynamic, spring is placed in water-cooling protective sleeve through hole, and spring one end is connected with displacement transfer bar, and the other end is with water-cooling protective sleeve bottom even Connect, it is ensured that displacement transfer bar contacts with the bottom center of bend specimen.
Displacement transfer bar coordinates with the via clearance of through hole, hot junction down-pressed pole and the water-cooling protective sleeve of push-down head.
The fit clearance of the through hole of displacement transfer bar and the through hole of push-down head, hot junction down-pressed pole and water-cooling protective sleeve be 0～ 0.5mm。
Seaming chuck, push-down head, hot junction down-pressed pole material for being resistant to more than 1500 DEG C hyperthermal materials.
Tolerating more than 1500 DEG C hyperthermal materials is graphite, pottery or refractory metal.
Radial dimension after deformation-sensor assembling is less than water-cooling protective sleeve entablature radial dimension.
Entablature is for stopping conduction of heat and the heat radiation of outer bound pair deformation-sensor, and making deformation-sensor temperature is 50 DEG C Below.
On water-cooling protective sleeve (8) middle standing pillar, arranged on left and right sides is provided with fixation clamp, mobile folder.
Measure the material ultra-temperature modulus of elasticity in static bending and the method for breaking strain, utilize above-mentioned measurement material ultra-temperature to bend Modulus and the device of breaking strain, concretely comprise the following steps:
Step 1: load transfer structure, displacement transfer structure and deformation-sensor are assembled, makes seaming chuck, bending examination Sample, push-down head, displacement transfer bar, hot junction down-pressed pole are positioned in the heating chamber of vacuum drying oven, deformation-sensor and data acquisition System connects, and bend specimen deformation data in loading procedure is transferred to data collecting system by deformation-sensor；
Step 2: vacuum drying oven temperature is risen to test temperature, is incubated more than 15 minutes by bend specimen in test temperature；
Step 3: seaming chuck applies bending load to bend specimen, and data acquisition system is transmitted to by deformation-sensor Deformation data, calculate the modulus of elasticity in static bending:
E f = l 3 · Δ F 4 b · h 3 · Δ S
In formula: EfFor the modulus of elasticity in static bending, l is span, and △ F is that the load of initial straight line segment on load-deflection curve increases Amount, b is specimen width, and h is sample thickness, and △ S is the incremental deformation at the span centre corresponding with load increment △ F；
Calculating breaking strain:
ϵ f = 6 S · h l 2
In formula: εfFor breaking strain, S is total deformation corresponding with maximum load on load-deflection curve.
Described vacuum drying oven is tungsten alloy or graphite vacuum furnace.
Present invention beneficial effect compared with prior art:
(1), under the present invention solves more than 1500 DEG C superhigh temperature test environments, tradition deformation-sensor local environment exceeds Service temperature and cannot be carried out measure problem, by the down-pressed pole of hot junction connect water-cooling protective sleeve, can effectively stop the external world Conduction of heat and heat radiation to deformation-sensor, advantageously reduces the temperature of deformation-sensor so that it is be in less than 50 DEG C, and then Deformation-sensor is enable to measure the modulus of elasticity in static bending and the breaking strain of material under hyperthermal environments；
(2) seaming chuck of the present invention, push-down head, the material of hot junction down-pressed pole select more than 1500 DEG C hyperthermal materials of tolerance Graphite, pottery or refractory metal, make to be placed under ultra-high temperature condition, joins the modulus of elasticity in static bending and breaking strain etc. smoothly The measurement of number.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is 1800 DEG C of bending stress strain curves of ultrahigh temperature ceramic composite of the present invention.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
Measure the material ultra-temperature modulus of elasticity in static bending and the device of breaking strain, as it is shown in figure 1, include load transmission knot Structure, displacement transfer structure and deformation-sensor 11,
Described load transfer structure includes seaming chuck 3, push-down head 6, hot junction down-pressed pole 7 and water-cooling protective sleeve 8, push-down head 6 Center is provided with through hole, and push-down head 6 is placed bend specimen 4, and seaming chuck 3 is positioned at bend specimen 4 overcentre, water-cooling protective sleeve 8 For hollow water-cooled I-shaped structure, including upper and lower crossbeam and middle standing pillar, it is used for blocking the heat of hot junction down-pressed pole 7 conduction, water Cold protection set 8 centers have through hole, and hot junction down-pressed pole 7 center has on through hole, hot junction down-pressed pole 7 one end and water-cooling protective sleeve 8 End connects, and makes hot junction down-pressed pole 7 communicate with the through hole of water-cooling protective sleeve 8, and hot junction down-pressed pole 7 other end is with push-down head 6 bottom surface even Connect, make the through hole of hot junction down-pressed pole 7 communicate with the through hole of push-down head 6；
Seaming chuck 3, push-down head 6, hot junction down-pressed pole 7 material for being resistant to more than 1500 DEG C hyperthermal materials, material One or more in optional graphite, pottery or refractory metal.
Displacement transfer structure includes displacement transfer bar 5, fixation clamp 10 and mobile folder 13, and displacement transfer bar 5 is placed in water-cooled and protects Sheath 8, hot junction down-pressed pole 7 through hole in, and contact through the through hole of push-down head 6 with the bottom center of bend specimen 4, fixation clamp 10 are fixed on water-cooling protective sleeve 8 middle standing pillar, and mobile folder 13 is connected with displacement transfer bar 5, and the two can be along water-cooling protective sleeve 8 Between column synchronize slide axially, spring 14 is placed in water-cooling protective sleeve 8 through hole, and spring 14 one end is connected with displacement transfer bar 5, separately One end is connected with water-cooling protective sleeve 8 bottom, it is ensured that displacement transfer bar 5 contacts with the bottom center of bend specimen 4.Deformation-sensor Radial dimension after 11 assemblings is less than water-cooling protective sleeve 8 entablature radial dimension, and entablature can be made to stop, and the deformation of outer bound pair passes The conduction of heat of sensor and heat radiation, advantageously reduce the temperature of deformation-sensor so that it is is in less than 50 DEG C.
Displacement transfer bar 5 coordinates with the via clearance of through hole, hot junction down-pressed pole 7 and the water-cooling protective sleeve 8 of push-down head 6, joins Closing gap is 0～0.5mm.
Measure the material ultra-temperature modulus of elasticity in static bending and the method for breaking strain, except utilizing above-mentioned measurement material ultra-temperature curved Bent modulus and the device of breaking strain, additionally include vacuum drying oven 1, heating chamber 2 and data collecting system 16, and vacuum drying oven 1 can Select tungsten alloy or graphite vacuum furnace, concretely comprise the following steps:
Step 1: load transfer structure, displacement transfer structure and deformation-sensor 11 are assembled, makes seaming chuck 3, curved Bent sample 4, push-down head 6, displacement transfer bar 5, hot junction down-pressed pole 7 are positioned in the heating chamber 2 of vacuum drying oven 1, deformation-sensor 11 are connected with data collecting system 15, and the bend specimen 4 deformation data in loading procedure is transferred to number by deformation-sensor 11 According to acquisition system (15)；
Step 2: vacuum drying oven 1 temperature is risen to test temperature, is incubated more than 15 minutes by bend specimen 4 in test temperature；
Step 3: seaming chuck 3 applies bending load to bend specimen 4, and data collecting system 16 collects by deformation-sensor The deformation data of 11 transmission, the calculating modulus of elasticity in static bending:
E f = l 3 · Δ F 4 b · h 3 · Δ S
In formula: EfFor the modulus of elasticity in static bending (GPa), l be span (mm), △ F be initial straight line segment on load-deflection curve Load increment (N), b be specimen width (mm), h be sample thickness (mm), △ S be in the span corresponding with load increment △ F Incremental deformation (mm) at Dian；
Calculating breaking strain:
ϵ f = 6 S · h l 2
In formula: εfFor breaking strain (%), S is total deformation corresponding with maximum load on load-deflection curve (mm)。
In actual tests, specifically: the upper end of seaming chuck 3 is connected by sylphon seal with vacuum drying oven 1, and and electronics The load transducer of universal testing machine connects, and places bend specimen 4 between seaming chuck 3 and push-down head 6, and push-down head 6 is placed on heat On end down-pressed pole 7, hot junction down-pressed pole 7 is threadeded with water-cooling protective sleeve 8, the lower end of water-cooling protective sleeve 8 and the lower end of vacuum drying oven 1 Threaded.
By the cooling water intake on water-cooling protective sleeve 8 and cooling water outlet, water-cooling protective sleeve 8 is carried out before test Cooling, installs deformation-sensor 11 between fixation clamp 10 and mobile folder 13, at evacuation or fill under noble gas protective condition, rises Temperature to 1600 DEG C, electronic universal tester by the seaming chuck 3 bend specimen 4 imposed load to being placed on push-down head 6 until Fracture, sample flexural deformation is passed to mobile folder 13 by displacement transfer bar 5, and deformation-sensor 11 is measured arranged on left and right sides respectively and moved Distance change between dynamic folder 13 and fixation clamp 10, computer gathers bend specimen 4 loading procedure by data collecting system 15 In load and deformation information, the deformation information of two deformation-sensors 11 is averaging, eliminates possible curved of displacement transfer bar 5 The measurement error of Qu Zaocheng, according to sample size and load-deflection curve, according to above-mentioned formula, calculates sample in hyperthermal environments Under the modulus of elasticity in static bending and breaking strain.
1800 DEG C of bending stress strain curves of the ultrahigh temperature ceramic composite recorded are as shown in Figure 2.Bending strength 41.2MPa, modulus of elasticity in static bending 45.2GPa, breaking strain 0.24%.Embodiment result surface, the present invention can accurately measure Material ultra-temperature bending modulus and breaking strain, reliable test result.
The present invention is not disclosed content and is known to the skilled person general knowledge.

Claims (10)

1. measure the material ultra-temperature modulus of elasticity in static bending and the device of breaking strain, it is characterised in that include load transfer structure, Displacement transfer structure and deformation-sensor (11),
Described load transfer structure includes seaming chuck (3), push-down head (6), hot junction down-pressed pole (7) and water-cooling protective sleeve (8), presses down Head (6) center is provided with through hole, and push-down head (6) is placed bend specimen (4), and seaming chuck (3) is positioned in bend specimen (4) in the heart Side, water-cooling protective sleeve (8) is hollow water-cooled I-shaped structure, including upper and lower crossbeam and middle standing pillar, is used for blocking under hot junction and presses The heat that bar (7) conducts, water-cooling protective sleeve (8) center has through hole, and hot junction down-pressed pole (7) center has under through hole, hot junction presses Bar (7) one end is connected with water-cooling protective sleeve (8) upper end, makes hot junction down-pressed pole (7) communicate with the through hole of water-cooling protective sleeve (8), heat End down-pressed pole (7) other end is connected with push-down head (6) bottom surface, makes the through hole of hot junction down-pressed pole (7) and the through hole phase of push-down head (6) Logical；
Displacement transfer structure includes displacement transfer bar (5), fixation clamp (10) and mobile folder (13), and displacement transfer bar (5) is placed in water Cold protection is overlapped in the through hole of (8), hot junction down-pressed pole (7), and passes in the through hole of push-down head (6) and the bottom surface of bend specimen (4) The heart contacts, and fixation clamp (10) is fixed on water-cooling protective sleeve (8) middle standing pillar, and mobile folder (13) is connected with displacement transfer bar (5), The two can synchronize to slide axially along water-cooling protective sleeve (8) middle standing pillar, and spring (14) is placed in water-cooling protective sleeve (8) through hole, bullet Spring (14) one end is connected with displacement transfer bar (5), and the other end is connected with water-cooling protective sleeve (8) bottom, it is ensured that displacement transfer bar (5) Contact with the bottom center of bend specimen (4).
2. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 1 and the device of breaking strain, it is characterised in that Displacement transfer bar (5) coordinates with the via clearance of through hole, hot junction down-pressed pole (7) and the water-cooling protective sleeve (8) of push-down head (6).
3. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 2 and the device of breaking strain, it is characterised in that Displacement transfer bar (5) with the fit clearance of the through hole of through hole, hot junction down-pressed pole (7) and the water-cooling protective sleeve (8) of push-down head (6) is 0～0.5mm.
4. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 1 and the device of breaking strain, it is characterised in that Seaming chuck (3), push-down head (6), hot junction down-pressed pole (7) material for being resistant to more than 1500 DEG C hyperthermal materials.
5. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 4 and the device of breaking strain, it is characterised in that More than 1500 DEG C hyperthermal materials of described tolerance are graphite, pottery or refractory metal.
6. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 1 and the device of breaking strain, it is characterised in that Radial dimension after deformation-sensor (11) assembling is less than water-cooling protective sleeve (8) entablature radial dimension.
7. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 1 and the device of breaking strain, it is characterised in that Entablature is used for stopping conduction of heat and the heat radiation of outer bound pair deformation-sensor (11), and making deformation-sensor (11) temperature is 50 DEG C Below.
8. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 1 and the device of breaking strain, it is characterised in that On water-cooling protective sleeve (8) middle standing pillar, arranged on left and right sides is provided with fixation clamp (10), mobile folder (13).
9. measure the material ultra-temperature modulus of elasticity in static bending and the method for breaking strain, it is characterised in that: utilize described in claim 1 Measure material ultra-temperature bending modulus and the device of breaking strain, concretely comprise the following steps:
Step 1: load transfer structure, displacement transfer structure and deformation-sensor (11) are assembled, makes seaming chuck (3), curved Song sample (4), push-down head (6), displacement transfer bar (5), hot junction down-pressed pole (7) are positioned over the heating chamber (2) of vacuum drying oven (1) In, deformation-sensor (11) is connected with data collecting system (15), deformation-sensor (11) by bend specimen (4) at loading procedure In deformation data be transferred to data collecting system (15)；
Step 2: vacuum drying oven (1) temperature is risen to test temperature, is incubated more than 15 minutes by bend specimen (4) in test temperature；
Step 3: seaming chuck (3) applies bending load to bend specimen (4), and data collecting system (16) collects and sensed by deformation The deformation data that device (11) transmits, the calculating modulus of elasticity in static bending:
E f = l 3 · Δ F 4 b · h 3 · Δ S
In formula: EfFor the modulus of elasticity in static bending, l is span, and △ F is the load increment of initial straight line segment on load-deflection curve, and b is Specimen width, h is sample thickness, and △ S is the incremental deformation at the span centre corresponding with load increment △ F；
Calculating breaking strain:
ϵ f = 6 S · h l 2
In formula: εfFor breaking strain, S is total deformation corresponding with maximum load on load-deflection curve.
10. the measurement material ultra-temperature modulus of elasticity in static bending as claimed in claim 9 and the method for breaking strain, its feature exists In, described vacuum drying oven (1) is tungsten alloy or graphite vacuum furnace.
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CN106885664A (en) * 2017-02-24 2017-06-23 长春机械科学研究院有限公司 Suitable for the sag method of testing and device of vacuum environment
CN107389444A (en) * 2017-09-19 2017-11-24 中国核动力研究设计院 A kind of ceramic high temperature bend test chucking appliance system of measurable deformation
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CN106404822A (en) * 2016-11-07 2017-02-15 九牧厨卫股份有限公司 Ceramic sintering deformation test fixture and method for testing ceramic slurry sintering deformation coefficients with same
CN106679914A (en) * 2017-02-24 2017-05-17 长春机械科学研究院有限公司 Bending deflection test device for high temperature vacuum environment
CN106885664A (en) * 2017-02-24 2017-06-23 长春机械科学研究院有限公司 Suitable for the sag method of testing and device of vacuum environment
CN107389444A (en) * 2017-09-19 2017-11-24 中国核动力研究设计院 A kind of ceramic high temperature bend test chucking appliance system of measurable deformation
CN108344645B (en) * 2018-01-24 2021-03-02 北京航空航天大学 High-temperature bending test deflection measuring device and measuring method
CN108344645A (en) * 2018-01-24 2018-07-31 北京航空航天大学 A kind of hot bend test deflection measuring apparatus and measurement method
CN108645733B (en) * 2018-05-14 2021-09-14 南京邮电大学 Touch sensor for measuring elastic modulus of biological tissue
CN108645733A (en) * 2018-05-14 2018-10-12 南京邮电大学 A kind of touch sensor for measuring biological tissue elasticity modulus
CN109012495A (en) * 2018-09-20 2018-12-18 西安力创材料检测技术有限公司 The device of dynamic monitoring deformation index under a kind of high-temperature and high-pressure conditions in reaction kettle
CN109012495B (en) * 2018-09-20 2024-03-15 西安力创材料检测技术有限公司 Device for dynamically monitoring deformation index under high-temperature and high-pressure condition in reaction kettle
CN110779809A (en) * 2018-12-21 2020-02-11 航天特种材料及工艺技术研究所 1050 ℃ -1700 ℃ three-point bending testing device
CN113654769A (en) * 2021-07-22 2021-11-16 昆山丘钛微电子科技股份有限公司 Optical filter detection method and three-point bending equipment
CN114279826A (en) * 2021-12-25 2022-04-05 中国地震局地质研究所 Built-in load sensor of high-pressure container and load calculation method
CN114279826B (en) * 2021-12-25 2024-02-23 中国地震局地质研究所 High-pressure container built-in load sensor and load calculation method

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