CN108918262A - A kind of Brazilian test device in situ suitable for X-ray CT system - Google Patents
A kind of Brazilian test device in situ suitable for X-ray CT system Download PDFInfo
- Publication number
- CN108918262A CN108918262A CN201810474729.0A CN201810474729A CN108918262A CN 108918262 A CN108918262 A CN 108918262A CN 201810474729 A CN201810474729 A CN 201810474729A CN 108918262 A CN108918262 A CN 108918262A
- Authority
- CN
- China
- Prior art keywords
- circular arc
- pressure surface
- arc pressure
- ray
- fixed baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention discloses a kind of Brazilian test devices in situ suitable for X-ray CT system, described device includes circular arc pressure surface, pedestal, fixed baffle and gauge mark, in the middle of the base, the pedestal is rectangle for the circular arc pressure surface setting, and the two sides of the long side of the rectangular base are provided with fixed baffle, it is provided with gauge mark at the outside midline position of the fixed baffle, the observation window opposite there are two position is set on the fixed baffle.The device is suitable for X-ray CT system, may be reused, and collimation with good stability for small sample, while easy to operate, transplantability is strong, can use in the X-ray industry CT of different model.
Description
Technical field
The present invention relates to material properties test technical fields, and in particular to a kind of in situ bar suitable for X-ray CT system
Western experimental rig.
Background technique
The tensile strength of solid brittleness explosive is its important one of mechanical property, due to explosive direct tensile test method
It has some limitations, specimen size is larger, dosage is big, in explosive formulation development stage, particular component sampling, is often difficult to
Meet the preparation of above-mentioned standard sample to require and its mechanical performance data cannot be obtained；In addition, specimen shape is complex, processing essence
Degree requires high, and the sample preparation period is longer also to seriously affect research work progress；Dumbbell shaped tensile sample in test is easy simultaneously
Now load is eccentric, cause in, stress is concentrated and is destroyed at changeover portion between end, obtain invalid test data.Therefore, in explosive
It produces, research institute, often quick, indirect assessment brittleness explosive the tensile property using the Brazilian test of roundel sample.
There is no general loading devices for the original position CT Brazilian test.In Experimental Mechanics field, Brazilian test generally uses material
The round metal arc voltage head of given dimensional is as loading device on material testing machine, but the indenter size as used in Material Testing Machine
It is larger, and metal material is also easy to produce artifact in CT detection process, so being not appropriate for for the original position CT Brazilian test.Meanwhile
Required sample size often very little in CT in-situ test, and CT scan is higher to the stability requirement of sample, tests at present
General round metal arc voltage head and the function without fixed sample in mechanics.In addition, in some Brazil's examinations containing Embedded defect
In testing, there is higher collimation requirement to the pose pattern of sample, round metal arc voltage head general at present does not simultaneously have alignment standard
Straight positioning function.Standard is put in view of the original position CT Brazilian test proposes small size, sample stability, sample to loading device
The requirement such as penetrability straightforward and to X-ray, it is therefore desirable to targetedly design and be suitable for adding for the original position CT Brazilian test
It carries and sets.
Summary of the invention
The present invention overcomes the shortcomings that prior art, provides a kind of Brazilian test in situ dress suitable for X-ray CT system
It sets, which is suitable for X-ray CT system, may be reused, and collimation with good stability for small sample
Property, while it is easy to operate, transplantability is strong, can use in the X ray industry CT of different model.
In order to reach above-mentioned technical effect, the present invention provides a kind of Brazilian tests in situ suitable for X-ray CT system
Device, described device include circular arc pressure surface, pedestal, fixed baffle and gauge mark, and the circular arc pressure surface is arranged in the pedestal
Middle part, the pedestal are rectangle, and the two sides of the long side of the rectangular base are provided with fixed baffle, the fixed baffle it is outer
It is provided with gauge mark at the midline position of side, the observation window opposite there are two position is set on the fixed baffle.
Further, the circular arc pressure surface includes the first circular arc pressure surface and the second circular arc pressure surface, and the pedestal includes upper bottom
The middle part of upper bed-plate is arranged in seat and lower bottom base, the first circular arc pressure surface, and the center of circle of the first circular arc pressure surface is located at upper bed-plate
The middle part of lower bottom base is arranged in lower section, the second circular arc pressure surface, and the center of circle of the second circular arc pressure surface is located at the top of lower bottom base, institute
It is opposite with the second circular arc pressure surface upper and lower position to state the first circular arc pressure surface, and size shape is identical.
Further, the placement of test sample be spatially located at the first circular arc pressure surface and the second circular arc pressure surface it
Between, the first circular arc pressure surface, the second circular arc pressure surface arc diameter be 1.3~1.4 times of diameter of test sample.
Further, the first circular arc pressure surface, the second circular arc pressure surface arc diameter be the diameter of test sample
1.35 again.
Further, the length of the corresponding string of the circular arc pressure surface is the 40~50% of rectangular base long side length, described
The center of circular arc pressure surface and the middle line of rectangular base are conllinear.
Further, the length of the corresponding string of the circular arc pressure surface is the 45% of rectangular base long side length.
Further, relative position of the observation window on the fixed baffle is consistent, and geomery is identical.
Further, the angle of central angle corresponding to the circular arc pressure surface is 50~70 °.
Further, the material of the Brazilian test device is polyether-ether-ketone.
Further, the fitted position plus tolerance of the distance between described fixed baffle and test sample thickness is+0.04
~+0.1mm.
Further, the surface roughness of the circular arc pressure surface and test sample contact surface is 1.6, the circular arc pressure surface with
The surface roughness in the non-contact face of test sample is 3.2, and the surface roughness of the fixed baffle and test sample contact surface is
1.6, the surface roughness in the fixed baffle and the non-contact face of test sample is 3.2.
The present invention is further explained and is illustrated below, the original provided by the invention suitable for X-ray CT system
Circle of position arc Brazilian test device, including circular arc pressure surface, pedestal, fixed baffle and gauge mark, the circular arc pressure surface are arranged in institute
The middle of the base is stated, the pedestal is rectangle, and the two sides of the long side of the rectangular base are provided with fixed baffle, the fixed gear
It is provided with gauge mark at the outside midline position of plate, the observation window opposite there are two position is set on the fixed baffle.
Wherein rectangular base is well contacted with the mechanical loading unit lower planes chopping block holding being assemblied in X-ray CT system, fixed
Baffle is used for the accurate positioning of sample, sets on fixed baffle there are two the sample viewing window to correspond to each other, shape, size and
Relative position on fixed baffle is consistent.The device uses the polyetheretherketonematerials materials with extremely low X-ray absorption ability
It is made, and guarantees that sharp edge, wedge angle be blunt, technical requirements of deburring.Also, the intensity of polyetheretherketonematerials materials works normally temperature
Degree and rigidity all meet the needs of Brazilian test is for load pressure head.When test, two identical CT Brazil's examination in situ
Testing loading device is one group, is used as unit of one group in actual use.Upper and lower two pedestals in use, with load
Direction is in the rectangular coordinate system of Z coordinate axis, and the fixation position in X-Y plane is completely the same.Also, its first circular arc pressure surface
The center of circle be located at below upper bed-plate, the center of circle of the second circular arc pressure surface is located at lower bottom base top.The device is integrated chemical conversion type.
Compared with prior art, the present invention has the advantages that：The device is according to the sample ruler of actual tests research
Very little demand can be adapted for CT in-situ test platform, which can be dismantled on CT in-situ test platform, thus
It can be repeated as many times and use, and the pose pattern for having the function of fixed sample, collimating sample to it.The loading device is used
When the research of the original position CT Brazilian test, maximum enlarging function can be realized, within the scope of detector field of view so as to more
See sample interior details clearly well, and the loading device is made of polyetheretherketonematerials materials, polyetheretherketonematerials materials are to X-ray
Penetrance is high, and density is smaller, will not influence CT detection imaging, while such strength of materials is higher, compression modulus is larger, normal work
Make wider range, it is sufficient to meet Brazilian test demand.In conclusion the present invention is suitable for X-ray CT system, can repeat
It uses, and collimation with good stability for small sample, while easy to operate, transplantability is strong, can be in difference
It is used in the X-ray industry CT of model.
Detailed description of the invention
Fig. 1 is the schematic perspective view of Brazilian test device provided by the invention；
Fig. 2 is the main view of Brazilian test device provided by the invention；
Fig. 3 is the top view of Brazilian test device provided by the invention；
Fig. 4 is the A-A sectional view of Brazilian test device provided by the invention；
Wherein, the first circular arc of 11- pressure surface, 12- the second circular arc pressure surface, 21- upper bed-plate, 22- lower bottom base, 3- fixed baffle,
4- gauge mark, 5- observation window.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It is emphasized that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the present invention provides a kind of circular arc Brazilian test device in situ suitable for X-ray CT system, it should
Device includes circular arc pressure surface (1), rectangular base (2), fixed baffle (3) and gauge mark (4), wherein the circular arc pressure surface (1)
Middle part in rectangular base (2) is set, the two sides of the long side of rectangular base (2) are provided with fixed baffle (3), rectangular bottom surface
It is well contacted with the mechanical loading unit lower planes chopping block holding being assemblied in X-ray CT system, fixed baffle (3) is for justifying
The accurate positioning of disk sample, the relative distance of two fixed baffles (3) and thickness of sample keep fitted position plus tolerance be+
0.04~+0.1mm, while processing gauge mark (4) at the midline position on the outside of fixed baffle, set on fixed baffle there are two
The sample viewing window (5) to correspond to each other, shape, size and the relative position on fixed baffle are consistent.Two complete
The exactly the same original position CT Brazilian test loading device is one group, is used as unit of one group in actual use, circular arc pressure surface includes
First circular arc pressure surface (11) and the second circular arc pressure surface (12), the pedestal include upper bed-plate (21) and lower bottom base (22), and described
One circular arc pressure surface (11) is arranged at the middle part of upper bed-plate (21), and the center of circle of the first circular arc pressure surface is located at the lower section of upper bed-plate, described
Second circular arc pressure surface (12) is arranged at the middle part of lower bottom base (22), and the center of circle of the second circular arc pressure surface is located at the top of lower bottom base, institute
It is opposite with the second circular arc pressure surface upper and lower position to state the first circular arc pressure surface, and size shape is identical.The peace of test sample
It puts and is spatially located between the first circular arc pressure surface and the second circular arc pressure surface, the first circular arc pressure surface, the second circular arc pressure
The arc diameter in face is 1.35 times of the diameter of test sample, and the length of the corresponding string of circular arc pressure surface is rectangular base long side length
45%, the angle of central angle corresponding to circular arc pressure surface is 60 °, and the Brazilian test device uses, and there is extremely low X-ray to inhale
The polyetheretherketonematerials materials of receipts ability are made, and guarantee that sharp edge, wedge angle be blunt, technical requirements of deburring, also, polyether-ether-ketone material
Intensity, normal working temperature and the rigidity of material all meet the needs of Brazilian test is for load pressure head, and furthermore the device is one
Body chemical conversion type.In circular arc loading surface and fixed baffle with the surface roughness requirements of sample contacting face by the way of removing material
Reach 1.6, the surface roughness in remaining and the non-contact face of sample is 3.2.
Claims (9)
1. a kind of Brazilian test device in situ suitable for X-ray CT system, which is characterized in that described device includes circular arc pressure
Face, pedestal, fixed baffle and gauge mark, the circular arc pressure surface setting is in the middle of the base, and the pedestal is rectangle, in institute
The two sides for stating the long side of rectangular base are provided with fixed baffle, and positioning is provided at the outside midline position of the fixed baffle and is carved
The observation window opposite there are two position is arranged in line on the fixed baffle.
2. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
Circular arc pressure surface includes the first circular arc pressure surface and the second circular arc pressure surface, and the pedestal includes upper bed-plate and lower bottom base, first circle
The middle part of upper bed-plate is arranged in arc voltage face, and the center of circle of the first circular arc pressure surface is located at the lower section of upper bed-plate, the second circular arc pressure surface
The middle part of lower bottom base is set, the center of circle of the second circular arc pressure surface is located at the top of lower bottom base, the first circular arc pressure surface with it is described
Second circular arc pressure surface upper and lower position is opposite, and size shape is identical.
3. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that test
The placement of sample is spatially located between the first circular arc pressure surface and the second circular arc pressure surface, the first circular arc pressure surface,
The arc diameter of two circular arc pressure surfaces is 1.3~1.4 times of the diameter of test sample.
4. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
The length of the corresponding string of circular arc pressure surface is the 40~50% of rectangular base long side length, the center of the circular arc pressure surface and rectangular base
The middle line of seat is conllinear.
5. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
Relative position of the observation window on the fixed baffle is consistent, and geomery is identical.
6. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
The angle of central angle corresponding to circular arc pressure surface is 50~70 °.
7. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
The material of Brazilian test device is polyether-ether-ketone.
8. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
The fitted position plus tolerance of the distance between fixed baffle and test sample thickness is+0.04~+0.1mm.
9. the Brazilian test device in situ according to claim 1 suitable for X-ray CT system, which is characterized in that described
The surface roughness of circular arc pressure surface and test sample contact surface is 1.6, the table of the circular arc pressure surface and the non-contact face of test sample
Surface roughness is 3.2, and the surface roughness of the fixed baffle and test sample contact surface is 1.6, the fixed baffle and survey
The surface roughness in the non-contact face of test agent is 3.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474729.0A CN108918262A (en) | 2018-05-17 | 2018-05-17 | A kind of Brazilian test device in situ suitable for X-ray CT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474729.0A CN108918262A (en) | 2018-05-17 | 2018-05-17 | A kind of Brazilian test device in situ suitable for X-ray CT system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918262A true CN108918262A (en) | 2018-11-30 |
Family
ID=64402431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810474729.0A Pending CN108918262A (en) | 2018-05-17 | 2018-05-17 | A kind of Brazilian test device in situ suitable for X-ray CT system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108918262A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4821577A (en) * | 1987-06-22 | 1989-04-18 | Dowell Schlumberger Incorported | Modified ring test |
| CN102183410A (en) * | 2011-01-27 | 2011-09-14 | 中国科学院武汉岩土力学研究所 | Brazilian split method for measuring elastic parameter of rock under extension condition |
| CN103471909A (en) * | 2013-10-10 | 2013-12-25 | 山东科技大学 | Test auxiliary device for testing tensile strength of rock through Brazilian test |
| CN203908887U (en) * | 2014-06-24 | 2014-10-29 | 中国工程物理研究院化工材料研究所 | Brazilian testing device |
| CN105319137A (en) * | 2015-12-01 | 2016-02-10 | 中国工程物理研究院化工材料研究所 | Device for improving precision degree of circular-arc Brazilian test and installation and debugging method of device |
| CN205237867U (en) * | 2015-12-15 | 2016-05-18 | 山东科技大学 | A clamping device for making run through coarse crack test piece |
| CN106769836A (en) * | 2016-11-15 | 2017-05-31 | 中国工程物理研究院化工材料研究所 | Test method and inclined-plane percussion device that powdery energetic material tiltedly hits |
-
2018
- 2018-05-17 CN CN201810474729.0A patent/CN108918262A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4821577A (en) * | 1987-06-22 | 1989-04-18 | Dowell Schlumberger Incorported | Modified ring test |
| CN102183410A (en) * | 2011-01-27 | 2011-09-14 | 中国科学院武汉岩土力学研究所 | Brazilian split method for measuring elastic parameter of rock under extension condition |
| CN103471909A (en) * | 2013-10-10 | 2013-12-25 | 山东科技大学 | Test auxiliary device for testing tensile strength of rock through Brazilian test |
| CN203908887U (en) * | 2014-06-24 | 2014-10-29 | 中国工程物理研究院化工材料研究所 | Brazilian testing device |
| CN105319137A (en) * | 2015-12-01 | 2016-02-10 | 中国工程物理研究院化工材料研究所 | Device for improving precision degree of circular-arc Brazilian test and installation and debugging method of device |
| CN205237867U (en) * | 2015-12-15 | 2016-05-18 | 山东科技大学 | A clamping device for making run through coarse crack test piece |
| CN106769836A (en) * | 2016-11-15 | 2017-05-31 | 中国工程物理研究院化工材料研究所 | Test method and inclined-plane percussion device that powdery energetic material tiltedly hits |
Non-Patent Citations (2)
| Title |
|---|
| ZHOU Z: "Study on fracture behavior of a polymer-bonded explosive simulant subjected to uniaxial compression using digital image correlation method", 《STRAIN》 * |
| 原曾年: "含预制缺陷PBX模拟材料损伤演变的原位CT研究", 《含能材料》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Aliabadian et al. | Failure, crack initiation and the tensile strength of transversely isotropic rock using the Brazilian test | |
| CN113624169B (en) | Instrument for evaluating length measurement error of X-ray CT device for three-dimensional shape measurement | |
| JPH0288951A (en) | Method of regenerating computer type tomographic imge | |
| US20070213942A1 (en) | Method and system for determining the propagation path of at least one crack from one or more fracture surfaces created by said crack(s) | |
| Vertyagina et al. | In situ quantitative three-dimensional characterisation of sub-indentation cracking in polycrystalline alumina | |
| Marrow et al. | 3D studies of damage by combined X-ray tomography and digital volume correlation | |
| JP2019035603A (en) | Biaxial in-plane compression test method | |
| Batiste et al. | Shear band characterization of triaxial sand specimens using computed tomography | |
| CN106644773A (en) | Impact performance testing device for materials | |
| CN108918262A (en) | A kind of Brazilian test device in situ suitable for X-ray CT system | |
| CN203745298U (en) | Microscopic hardening layer measurement jig based on ultrasonicfinishing strengthening | |
| CN105651150B (en) | Measuring appliance | |
| CN103926139A (en) | Jig and method for measuring thickness of thin microscopic hardened layer | |
| US5524038A (en) | Method of non-destructively inspecting a curved wall portion | |
| RU2323428C1 (en) | Method for determining the wood static hardness | |
| CN209707266U (en) | A kind of solid concrete compression strength top daraf(reciprocal of farad) detection device | |
| Leutenegger | Detection of defects in cylindrical structures using a time reverse numerical simulation method | |
| Aloisi et al. | Characterization of the effects of detector angular misalignments and accuracy enhancement of x-ray CT dimensional measurements | |
| CN208366728U (en) | A kind of existed concrete bridge compression strength diffusion method detector | |
| Lear | Improving the assessment of in situ timber members with the use of nondestructive and semi-destructive testing techniques | |
| CN207439976U (en) | A kind of electron probe sample stage for being used to analyze large dimension specimen tissue | |
| US3068688A (en) | Method for measuring uni-or tri-axial inherent stresses | |
| CN216621043U (en) | Aligning and positioning device in X-ray three-dimensional dimension measurement system | |
| CN220063958U (en) | Ultrasonic phased array test block and ultrasonic phased array equipment detection system | |
| CN212409597U (en) | Measuring tool for measuring ultrasonic wave detection angle deflection value of sound beam of angle probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
|
| RJ01 | Rejection of invention patent application after publication |