CN106053235A - Nanoscale compressing, shearing and twisting device and method for small-angle scattering study of coal and rock materials - Google Patents
Nanoscale compressing, shearing and twisting device and method for small-angle scattering study of coal and rock materials Download PDFInfo
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- CN106053235A CN106053235A CN201610590025.0A CN201610590025A CN106053235A CN 106053235 A CN106053235 A CN 106053235A CN 201610590025 A CN201610590025 A CN 201610590025A CN 106053235 A CN106053235 A CN 106053235A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing 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
- G01N3/26—Investigating twisting or coiling properties
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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
- G01N2203/0019—Compressive
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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
- G01N2203/0025—Shearing
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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
- G01N2203/0026—Combination of several types of applied forces
- G01N2203/0028—Rotation and bending
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Abstract
Disclosed are a nanoscale compressing, shearing and twisting device and method for small-angle scattering study of coal rock materials. The device comprises a micro servo first motor, planetary gear boxes, magnetic-electric coders, nut-rotating screws, ball-type nut sliders, guide rails, a fixing end, a pressure sensor, a multichannel collection end, a LabVIEW virtual instrument data collection system, a ferrule, screws, a strain gauge, a loading end, a micro servo second motor and a twisting micro servo third motor. Movement transmission of the nut-rotating screws is realized by driving the planetary gear boxes through the micro motors, the ball-type nut sliders drive the ferrule to feed towards the fixing end along the guide rails while the loading end is under driving action of the micro servo motors, the ferrule and the fixing end fix a coal rock sample to be studied on the same through two own different notches for compressing, shearing and twisting experiments, and detection of nanopore structure change during dynamic compressing, shearing and twisting of nanoscale coal rock materials is realized.
Description
Technical field
The present invention relates to small-angle scattering in-situ compression shear and turn round field, particularly relate to a kind of small-angle scattering research coal petrography material Na Guan
Pressure cuts torsion device and method.
Background technology
Nano material mechanics performance changes response characteristic concerning its mechanics and micropore structure.Nano material elastoplasticity bar
Under part, internal nanoscale micropore structure change is the beginning of coal petrography material damage, and material damage is always scientific and engineering
The focus that boundary is discussed.Existing coal petrography material testing system is all that the destruction from macro-scale is started with, big based on after macroscopic failure
Yardstick crack characterizes coal and rock destructive process, carries out numerical simulation reconstruct afterwards, and these numerical simulation softwares are in image mistake
Noise filtering eliminates and after image dividing processing, can only characterize the sample broke morphological characteristic of large scale, it is impossible to obtain nanoscale
Lower coal and rock damage variation characteristic.The tensile failure of coal and rock necessarily refer to internal heterogeneous body pore structure displacement, misplace, sliding
Dynamic response, pore morphology changes, and nanoaperture quantity and size also can change.And existing coal petrography material testing system without
Method obtains dynamic tensile process pore structure change under nanoscale, and under load effect, coal petrography is received and seen the mechanical model that structure is corresponding
First needing to set up on substantial amounts of observation practice, conventional experiment analytical method the most can not meet requirement.Along with country
Large scientific facilities low-angle scattering of X-rays builds up with spallation source neutron scattering experimental station, certainly will be coal petrography nanometer under nanoscale
Material provides advanced research means and equipment, and therefore in the urgent need to a kind of low cost, what easy and simple to handle, volume was little is used for testing coal
Rock material compresses, shear, reverse under the conditions of nanoscale pore structure change experimental provision, disclose nanometer sized materials damage
Process, improves micropore structure change quantification characterization research ability.
Summary of the invention
It is an object of the invention to propose a kind of small-angle scattering research coal petrography material Na Guan pressure and cut torsion device and method, pass through
Miniature servo the first motor, epicyclic gearbox, magneto-electric encoder, nut rotary type leadscrew, ball-type nut slider, guide rail,
Fixing end, pressure transducer, multichannel collecting end, LabVIEW virtual instrument data collecting system, cutting ferrule, screw, foil gauge,
Loading end, miniature servo the second motor, reverse miniature servo the 3rd motor and carry out sequential combination, described miniature servo the first motor
By driving epicyclic gearbox and then realizing nut rotary type leadscrew fortune transmission, described nut rotary type leadscrew and ball-type nut
Slider roll contacts, and described loading end ball-type nut slider under micro servo motor driving effect drives cutting ferrule along guide rail
To fixing end feeding, described cutting ferrule is fixed as one with ball-type nut slider by screw, and cutting ferrule is held by respectively with fixing
From the two kinds of dissimilar otch having make coal petrography sample to be studied be fixed on it be compressed, shear, torsion test.Reach
Under the transmission of neutron small angle scattering and low-angle scattering of X-rays, test nanoscale solid coal petrography MATERIALS ' DYNAMIC compress, shear, turn round
The purpose of nanoaperture structure variation characteristic during Zhuaning.To achieve these goals, the present invention adopts the following technical scheme that
A kind of small-angle scattering research coal petrography material Na Guan pressure cuts torsion device, including:
Miniature servo the first motor 1, epicyclic gearbox 2, magneto-electric encoder 3, nut rotary type leadscrew 4, ball-type spiral shell
Female slide block 5, guide rail 6, fixing end 7, pressure transducer 8, multichannel collecting end 9, LabVIEW virtual instrument data collecting system
10, cutting ferrule 11, screw 12, foil gauge 13, loading end 14, miniature servo the second motor 15, reverse miniature servo the 3rd motor 16,
Described micro servo motor 1 is by driving star gear-box 2 and then realizing nut rotary type leadscrew 3 transmission, and described nut rotates
Formula leading screw 4 and ball-type nut slider 5 Structure deformation, described loading end 14 is in miniature servo the first motor 1 and miniature servo the
Under two motor 15 driving effects, ball-type nut slider 5 drives cutting ferrule 11 along guide rail 6 to the feeding of fixing end 7, described cutting ferrule 11
It is fixed as one with ball-type nut slider 5 by screw 12, and cutting ferrule 11 is different by two kinds each had from fixing end 7
Type otch make coal petrography sample to be studied be fixed on it be compressed, shear, torsion test.
Preferably, described micro servo motor its be connected with epicyclic gearbox transmission drive two nut rotary type leadscrews turn
Dynamic, it is solid with thereon that the rotation of nut rotary type leadscrew and then drive ball-type nut slider are forced through screw along guide rail translation
Cutting ferrule carries out one-dimensional translation.
Preferably, described cutting ferrule has a slit, and length × width × height is 30mm × 1.5mm × 30mm, and rectangle coal petrography is thin
Plate is that vertical shape snaps in cutting ferrule and carries out being of coupled connections and then be compressed experiment with cutting ferrule；It is oblique that cutting ferrule has another one
Groove, it is 30mm × 1.5mm × 30mm that size is all length × width × height, rectangular thin plate becomes vertical shape snap in cutting ferrule and is of coupled connections
And then carry out shearing experiment；It is that vertical shape snaps in cutting ferrule and is of coupled connections with cutting ferrule by rectangle coal petrography thin plate, starts and reverse
Miniature servo the 3rd motor, carries out torsion test under different rates by controlling motor speed.
Preferably, (LabVIEW is a kind of program development ring to the LabVIEW that this device employing computer measurement and control field is advanced
Border, is developed by American National instrument (NI) company) virtual instrument software is as development platform, by micro servo motor control
System, the load of pressure transducer, the Displacement-deformation of compression generation, compression speed, coal petrography surface strain sheet carry out online data
Monitoring and collection, realize Synchronization Control and data integration collection by feedback regulation.
A kind of small-angle scattering research coal petrography material Na Guan pressure is cut torsion device and method and is utilized above-mentioned small-angle scattering Study on Coal
Rock material Na Guan pressure cuts torsion device, and the method can be at spallation neutron target neutron scattering center and low-angle scattering of X-rays experimental station
Carry out.
A kind of small-angle scattering research coal petrography material Na Guan pressure cuts torsion method, and concrete operation step is as follows:
A, will compression (shearing) device, switch board and host computer be attached, and selects the experiment purpose needed to compress, cut
Cut, reverse, coal petrography rectangular thin plate be placed in cutting ferrule different tests mode-specific groove and be of coupled connections.
B, coal petrography sample is processed as length × width × height is 200mm × 30mm × 1mm ribbon rectangular thin plate.Subsequently by it
Two ends are individually fixed at two cutting ferrules, and for eliminating the impact of end effect, it is each that cutting ferrule is goed deep at rectangular thin plate coal petrography sample two ends
30mm, thin plate is of coupled connections with cutting ferrule.When compression and torsion test pattern, two cutting ferrule central axis and rectangular thin plate coal petrography sample
Axis is maintained at a level.During placing sample, ribbon rectangular thin plate needs couple smooth with card grooving to connect
Touch, be allowed to rectangular thin plate contact surface in compression process good, prevent point cantact behavior.
C, pressure is cut torsion device it is placed in small-angle scattering experimental station sample stage, open neutron scattering and low-angle scattering of X-rays system
System, Adjustment Tests platform height is carried out light, so that neutron or X-ray are gone out from the transmission of coal petrography rectangular thin plate central authorities.
D, open LabVIEW virtual instrument data collecting system window control micromachine rotating speed, set compression, shear,
Reverse speed.
E, after all are just chatted, starter is carried out the data acquisition of pressure, displacement, speed, strain and time by set parameter
Collection, during until coal petrography material occurs fracture under compression, shearing, twisting action, stops pressure, shearing force, moment of torsion, displacement, speed
Degree, strain and the data acquisition of time, be saved into preset memory locations；
F, carry out under different loading speed by experiment coal petrography material, different compressions, shear, torsional mode experiment, investigate
The meso-damage mechanism of coal petrography material under its internal nanoaperture structure Changing Pattern, and then research nanoscale.
G, combine small-angle scattering experimental system, extract every test data, remove device the most in reverse order, and properly
Preserve.
Present invention have the advantage that
A kind of small-angle scattering that the present invention addresses research coal petrography material Na Guan pressure cuts torsion device, have micro servo motor,
Nut rotary type leadscrew, ball-type nut slider cutting ferrule, LabVIEW virtual instrument data collecting system, each compact conformation, design
Rationally, installing/dismounting is simple；Micro servo motor is by driving star gear-box and then realizes nut rotary type leadscrew fortune transmission,
Nut rotary type leadscrew and ball-type nut slider Structure deformation, described loading end is ball under micro servo motor driving effect
Formula nut slider drives cutting ferrule to fix one to fixing end feeding, described cutting ferrule by screw and ball-type nut slider along guide rail
Body, and cutting ferrule and fixing end to make coal petrography sample to be studied be fixed in it by the two kinds of dissimilar otch each having enterprising
Row compression, shearing, torsion test.Each structure member production cost is low, and single unit system is simple to operate, finally dissipates at the little angle of neutron
Penetrate or test nanoscale solid coal petrography MATERIALS ' DYNAMIC under the transmission of radiation of low-angle scattering of X-rays system generation and compress, shear, turn round
Nanoaperture structure variation characteristic during Zhuaning.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 be the embodiment of the present invention sample by compression time working effect figure；
Fig. 3 is that the sample of the embodiment of the present invention is by working effect figure during shearing force；
In figure: 1 miniature servo the first motor；2 epicyclic gearboxes；3 magneto-electric encoders；4 nut rotary types
Leading screw；5 ball-type nut sliders；6 guide rails；7 fixing ends；8 pressure transducers；9 multichannel collecting ends；10—
LabVIEW virtual instrument data collecting system；11 cutting ferrules；12 screws；13 foil gauges；14 loading ends；15 is miniature
Servo the second motor；16 reverse miniature servo the 3rd motor.
Detailed description of the invention
Below the present invention is described further, but protection scope of the present invention is not limited to concrete reality discussed below
Execute the scope of mode.
Shown in Fig. 1, a kind of small-angle scattering research coal petrography material Na Guan presses and cuts torsion device, miniature servo the first motor 1,
Epicyclic gearbox 2, magneto-electric encoder 3, nut rotary type leadscrew 4, ball-type nut slider 5, guide rail 6, fixing end 7, pressure
Sensor 8, multichannel collecting end 9, LabVIEW virtual instrument data collecting system 10, cutting ferrule 11, screw 12, foil gauge 13, add
Carrying end 14, miniature servo the second motor 15, reverse miniature servo the 3rd motor 16, described micro servo motor 1 is by driving star
Star gear-box 2 and then realize nut rotary type leadscrew 3 transmission, described nut rotary type leadscrew 4 rolls with ball-type nut slider 5
Contact, described loading end 14 is ball-type nut under miniature servo the first motor 1 and the second motor 15 driving effect of miniature servo
Slide block 5 drives cutting ferrule 11 along guide rail 6 to the feeding of fixing end 7, and described cutting ferrule 11 is solid with ball-type nut slider 5 by screw 12
Determine one, and cutting ferrule 11 holds the 7 two kinds of dissimilar otch passing through each have to make coal petrography sample to be studied solid with fixing
Be compressed thereon, shear, torsion test.
Shown in Fig. 2, after assembling the complete present invention, Thin Rectangular tabular coal petrography is fixed on cutting ferrule 11 medium position, with
Cutting ferrule is of coupled connections, and starts miniature servo the first motor 1 and miniature servo the second motor 15, starts LabVIEW Virtual instrument
Device data collecting system cooperation small-angle scattering system carries out rectangular thin plate coal petrography and descends nanoaperture structure variation monitoring by compression.
Shown in Fig. 3, after assembling the complete present invention, Thin Rectangular tabular coal petrography is fixed on the oblique side position of cutting ferrule 11, with
Cutting ferrule is of coupled connections, and starts miniature servo the first motor 1 and miniature servo the second motor 15, starts LabVIEW Virtual instrument
Device data collecting system coordinates small-angle scattering system to carry out rectangular thin plate coal petrography by nanoaperture structure variation monitoring under shearing force.
Shown in Fig. 3, after assembling the complete present invention, Thin Rectangular tabular coal petrography is fixed on cutting ferrule 11 medium position, with
Cutting ferrule is of coupled connections, and starts miniature servo the first motor 1 and miniature servo the second motor 15 and reverses miniature servo
Three motors 16, startup LabVIEW virtual instrument data collecting system cooperation small-angle scattering system carries out rectangular thin plate coal petrography and is turned round
Turn lower nanoaperture structure variation monitoring.
A kind of small-angle scattering research coal petrography material Na Guan pressure of the present invention cuts torsion device and method, utilizes above-mentioned little
Angle scattering research coal petrography material Na Guan pressure cuts torsion device, can try at spallation neutron target neutron scattering center and low-angle scattering of X-rays
Test station to carry out.Concrete operation step is as follows:
A, pressure cut torsion device, switch board and host computer be attached, select the experiment purpose compression needed, shear,
Reverse, coal petrography rectangular thin plate be placed in cutting ferrule different tests mode-specific groove and be of coupled connections.
B, coal petrography sample is processed as length × width × height is 200mm × 30mm × 1mm ribbon rectangular thin plate.Subsequently by it
Two ends are individually fixed at two cutting ferrules, and for eliminating the impact of end effect, it is each that cutting ferrule is goed deep at rectangular thin plate coal petrography sample two ends
30mm, thin plate is of coupled connections with cutting ferrule.When compression and torsion test pattern, two cutting ferrule central axis and rectangular thin plate coal petrography sample
Axis is maintained at a level.During placing sample, ribbon rectangular thin plate needs couple smooth with card grooving to connect
Touch, be allowed to rectangular thin plate contact surface in compression process good, prevent point cantact behavior.
C, pressure is cut torsion device it is placed in small-angle scattering experimental station sample stage, open neutron scattering and low-angle scattering of X-rays system
System, Adjustment Tests platform height is carried out light, so that neutron or X-ray are gone out from the transmission of coal petrography rectangular thin plate central authorities.
D, open LabVIEW virtual instrument data collecting system window control micromachine rotating speed, set compression, shear,
Reverse speed.
E, after all are just chatted, starter is carried out the data acquisition of pressure, displacement, speed, strain and time by set parameter
Collection, during until coal petrography material occurs fracture under compression, shearing, twisting action, stops pressure, shearing force, moment of torsion, displacement, speed
Degree, strain and the data acquisition of time, be saved into preset memory locations；
F, carry out under different loading speed by experiment coal petrography material, different compressions, shear, torsional mode experiment, investigate
The meso-damage mechanism of coal petrography material under its internal nanoaperture structure Changing Pattern, and then research nanoscale.
G, combine small-angle scattering experimental system, extract every test data, remove device the most in reverse order, and properly
Preserve.
Experiment embodiment one: nanoaperture structure pore-size distribution and specific surface during small-angle scattering research coal petrography material Na Guan compression
Long-pending change.
(1) Selection and Design of motor is carried out according to the magnitude of load that coal petrography sample is applied so that variety classes coal petrography
There is compressing bad time required load in the maximum compressive strength that meets of material.The electricity using power bracket motor to be 3w～8w is intended in experiment
Machine, can carry out type selecting for the breakdown strength of estimating of different coal petrography materials to motor, and it is convenient to load and unload, to satisfied different coal petrographys
The compression failure of material.
(2) computer, compressor and switch board serial ports are connected: by electric system connecting line and multichannel collecting end with
And the connecting line in pressure transducer respectively with switch board connect.USB line is utilized to be connected with host computer by data collecting card, real
Existing data implement monitoring；USB line is utilized to be connected with switch board by computer so that main frame is to motor rotation speed and mould
The feedback that during the control of formula and electric machine rotation, motor is online to computer.After treating that all of connecting line has connected, beat
Open computer and switch board power supply.
(3) it is 200mm × 30mm × 1mm ribbon rectangular thin plate that coal petrography sample is processed as length × width × height.Subsequently will
Its two ends are individually fixed at two cutting ferrules, and for eliminating the impact of end effect, cutting ferrule is goed deep at rectangular thin plate coal petrography sample two ends
Each 30mm, thin plate is of coupled connections with cutting ferrule.For overcoming rectangular thin plate coal petrography sample that shearing, tension-torsion mechanics occur in compression process
Behavior, two cutting ferrule central axis and rectangular thin plate coal petrography sample axis are maintained at a level.During placing sample
Ribbon rectangular thin plate needs and the smooth coupling contact of card grooving, is allowed to rectangular thin plate contact surface in compression process good, anti-
Only appearance point touching act.
(4) little with hot spot due to X-ray beam, it is impossible to cover the complete area of whole thin sheet surface, but we to study
Be that the feature in a region is to disclose rectangular thin plate entirety nanoporous structure Changing Pattern.Due to coal petrography material compression process
After middle removal end effect, the flake parameter such as sample microcellular structural morphology, specific surface area, average pore size is formed at roentgenization
Hot spot at there is the same anamorphic effect compared with other positions of sample.Compressor is placed in NSRL 1W2A
Or on the sample stage of center, 1W2B Physical Zone experiment centre, open X-ray light path, Adjustment Tests platform height is carried out light, so that X
Ray is gone out from the transmission of coal petrography rectangular thin plate central authorities.
(5) setting compression speed as 15 μm/s, start compressor, cutting ferrule realizes displacement with certain compression speed, treats
There is compressive failure in pressurized rectangular thin plate, and this compressor is automatically stopped compression under control of the computer and maintains this position
Put.Test result indicate that: the present invention can not only obtain stress-strain diagram, and is capable of in-situ observation coal petrography material Na Guan
Nanoaperture structure pore-size distribution and specific surface area change during compression.
As it has been described above, embodiments of the invention are explained, but as long as essentially without departing from this
Bright inventive point and effect can have a lot of deformation, and this will be readily apparent to persons skilled in the art.Therefore, this
Within the variation of sample is also integrally incorporated in protection scope of the present invention.
Claims (5)
1. small-angle scattering research coal petrography material Na Guan pressure cuts torsion device, it is characterised in that: include miniature servo the first motor,
Epicyclic gearbox, magneto-electric encoder, nut rotary type leadscrew, ball-type nut slider, guide rail, fixing end, pressure transducer,
Multichannel collecting end, LabVIEW virtual instrument data collecting system, cutting ferrule, screw, foil gauge, loading end, miniature servo second
Motor, reversing miniature servo the 3rd motor, micro servo motor is by driving star gear-box and then realizing nut rotary type silk
Thick stick transmission, described nut rotary type leadscrew and ball-type nut slider Structure deformation, described loading end is at miniature servo the first electricity
Under machine and the second motor driving effect of miniature servo, ball-type nut slider drives cutting ferrule along guide rail to fixing end feeding, described
Cutting ferrule is fixed as one with ball-type nut slider by screw, and cutting ferrule is held by the two kinds of inhomogeneities each having with fixing
Type otch make coal petrography sample to be studied be fixed on it be compressed, shear, torsion test.
A kind of small-angle scattering research coal petrography material Na Guan pressure the most according to claim 1 cuts torsion device, it is characterised in that: institute
It is connected two nut rotary type leadscrews rotations of transmission drive, nut rotary type leadscrew with epicyclic gearbox to state micro servo motor
Rotation so that drive ball-type nut slider to be forced through along guide rail translation screw is solid carries out one-dimensional translation with cutting ferrule thereon.
The most according to claim 1 pressure for a kind of small-angle scattering research coal petrography material Na Guan cuts torsion device, and its feature exists
In: described cutting ferrule has a slit, and length × width × height is 30mm × 1.5mm × 30mm, and rectangle coal petrography thin plate is vertical shape card
Enter in cutting ferrule and carry out being of coupled connections and then be compressed experiment with cutting ferrule；Cutting ferrule has another one skewed slot, and size is all length
× wide × a height of 30mm × 1.5mm × 30mm, becomes vertical shape to snap in cutting ferrule rectangular thin plate and is of coupled connections and then shears
Experiment；It is that vertical shape snaps in cutting ferrule and is of coupled connections with cutting ferrule by rectangle coal petrography thin plate, starts and reverse miniature servo the 3rd
Motor, carries out torsion test under different rates by controlling motor speed.
A kind of small-angle scattering research coal petrography material Na Guan pressure the most according to claim 1 cuts torsion device, it is characterised in that: should
The LabVIEW virtual instrument software of device employing computer measurement and control field advanced person is as development platform, by micro servo motor control
System processed, the load of pressure transducer, the Displacement-deformation of compression generation, compression speed, coal petrography surface strain sheet count online
According to monitoring and collection, realize Synchronization Control and data integration collection by feedback regulation.
5. small-angle scattering research coal petrography material Na Guan pressure cuts a torsion application process, and concrete operation step is as follows:
A, will compression (shearing) device, switch board and host computer be attached, the experiment purpose compression that selects to need, shearing,
Reverse, coal petrography rectangular thin plate be placed in cutting ferrule different tests mode-specific groove and be of coupled connections；
B, coal petrography sample is processed as length × width × height is 200mm × 30mm × 1mm ribbon rectangular thin plate；Subsequently by its two ends
Being individually fixed at two cutting ferrules, for eliminating the impact of end effect, each 30mm of cutting ferrule is goed deep at rectangular thin plate coal petrography sample two ends,
Thin plate is of coupled connections with cutting ferrule；When compression and torsion test pattern, two cutting ferrule central axis and rectangular thin plate coal petrography sample axis
Line is maintained at a level；During placing sample, ribbon rectangular thin plate needs and the smooth coupling contact of card grooving, makes
Rectangular thin plate contact surface in compression process good, prevent point cantact behavior；
C, pressure is cut torsion device it is placed in small-angle scattering experimental station sample stage, open neutron scattering and low-angle scattering of X-rays system, adjust
Whole testing stand height is carried out light, so that neutron or X-ray are gone out from the transmission of coal petrography rectangular thin plate central authorities；
D, open LabVIEW virtual instrument data collecting system window control micromachine rotating speed, set and compress, shear, reverse
Speed；
E, after all are just chatted, starter is carried out the data acquisition of pressure, displacement, speed, strain and time by set parameter,
Until coal petrography material compression, shear, there is fracture under twisting action time, stop pressure, shearing force, moment of torsion, displacement, speed,
Strain and the data acquisition of time, be saved into preset memory locations；
F, combine small-angle scattering experimental system, extract every test data, remove device the most in reverse order, and properly protect
Deposit；
G, carry out under different loading speed by experiment coal petrography material, different compressions, shear, torsional mode experiment, investigate in it
The meso-damage mechanism of coal petrography material under portion's nanoaperture structure Changing Pattern, and then research nanoscale.
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| CN201610590025.0A CN106053235A (en) | 2016-07-25 | 2016-07-25 | Nanoscale compressing, shearing and twisting device and method for small-angle scattering study of coal and rock materials |
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| CN201610590025.0A CN106053235A (en) | 2016-07-25 | 2016-07-25 | Nanoscale compressing, shearing and twisting device and method for small-angle scattering study of coal and rock materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490008A (en) * | 2018-04-18 | 2018-09-04 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron small angle scattering loading device of Investigation of Metal Surface hydrogen attack |
| CN108798786A (en) * | 2018-07-17 | 2018-11-13 | 中国矿业大学(北京) | A kind of neutron radiation monitoring method for early warning of underground coal Instability of Rock Body dynamic disaster |
| CN108844981A (en) * | 2018-09-19 | 2018-11-20 | 中国工程物理研究院核物理与化学研究所 | A kind of time resolution stretching device for small-angle neutron scattering spectrometer |
| CN112879412A (en) * | 2021-01-22 | 2021-06-01 | 重庆蓝岸通讯技术有限公司 | Locking piece capable of displaying torque force |
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| CN108490008B (en) * | 2018-04-18 | 2023-05-26 | 中国工程物理研究院核物理与化学研究所 | Neutron small angle scattering loading device for researching hydrogen corrosion on metal surface |
| CN108798786A (en) * | 2018-07-17 | 2018-11-13 | 中国矿业大学(北京) | A kind of neutron radiation monitoring method for early warning of underground coal Instability of Rock Body dynamic disaster |
| CN108844981A (en) * | 2018-09-19 | 2018-11-20 | 中国工程物理研究院核物理与化学研究所 | A kind of time resolution stretching device for small-angle neutron scattering spectrometer |
| CN112879412A (en) * | 2021-01-22 | 2021-06-01 | 重庆蓝岸通讯技术有限公司 | Locking piece capable of displaying torque force |
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