CN2581969Y - Nondestructive tester for mechanical properties of brittle material - Google Patents
Nondestructive tester for mechanical properties of brittle material Download PDFInfo
- Publication number
- CN2581969Y CN2581969Y CN 02245650 CN02245650U CN2581969Y CN 2581969 Y CN2581969 Y CN 2581969Y CN 02245650 CN02245650 CN 02245650 CN 02245650 U CN02245650 U CN 02245650U CN 2581969 Y CN2581969 Y CN 2581969Y
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- crossbeam
- brittle material
- mechanical property
- destructive testing
- top board
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Abstract
The utility model relates to a nondestructive tester for mechanical properties of brittle materials. The utility model is characterized in that the utility model comprises a plane testing table, a door-shaped bracket, a transverse beam, a sensor and a press head, wherein a door-shaped bracket is provided with a top plate and two vertical rods and is arranged on the testing table, a transverse beam moves by a drive device, both ends of the transverse beam are arranged on the two vertical rods of the door-shaped bracket, a sensor is arranged on the transverse beam, and a press head is arranged on the bottom end of the sensor. The utility model can conduct on-line tests and monitoring for brittle components in a working state, can conduct nondestructive tests for various articles needing protection and can also conduct guarantee tests for tested components, etc., by matching with a nondestructive testing method invented by an applicant. The utility model has the wide application prospect for the construction of national economy.
Description
Technical field
The utility model relates to a kind of proving installation of material property, particularly about the device of mechanical property of brittle material non-destructive testing.
Background technology
Hard brittle materials such as glass, pottery, concrete in the development of the national economy and national defense construction extensive application and aspect reliability more and more stronger demand, caused the military service performance on-line testing of fragility member and pressing for of life prediction assessment technique.The surface and interface analysis of Residual Stress of hard brittle material and surface damage and Damage Evolution process are significant to the application and the structural design of hard brittle material, also are that hard brittle material enters the safety guarantee that engineering is used.Decline and the Forecasting Methodology thereof of grasping the surface property of hard brittle material under the chemical radiation environment are very important to preventing and treating catastrophic failure.For a long time, the evaluation of material worker wishes always can be with simple, need not standard sample and specific lab environment carry out the non-destructive Mechanics Performance Testing, this also is a 21 century mechanics and material supplier author's an applied research direction.But except nondestructive testing technique, the non-destructive testing technology never breaks through up to the present.And in actual applications, the demand of non-destructive testing is very large, such as: glass or ceramic component have been used several years, does its strength character have great variation? how long can also use? also as: several parts are with different materials or same type of material but different technology making, is that performance best? is that the poorest? and for example: borrow Japanese pottery parts, want to understand very much its intensity, hardness, elastic modulus, but can not damage it, can can't harm online these mechanical properties that obtains? for another example: a certain important fragility member will enter use, for perfectly safe, how to carry out non-destructive testing, can do you satisfy essential safety requirements with the performance and the life-span that guarantee it? up to now, above problem all also is not resolved technically.
Summary of the invention
At the problems referred to above, the applicant is on the basis of hertz contact theory, utilize the equal strength theory of the evaluation hard brittle material of doctor's Bao Yiwang proposition in unequal stress field actual effect problem, expression formula and the method for testing thereof of utilizing ball-pressure method to characterize hard brittle material local strength have been set up, by the contrast of unrelieved stress sample and no unrelieved stress sample local strength is arranged, can obtain the residual-stress value of material part easily.
For realizing said method, the purpose of this utility model provides a kind of simple in structure, and is easy to use, can be fit to the mechanical property of brittle material non-destructive testing device of various on-line testings.
For achieving the above object, the utility model is taked following technical scheme: a kind of mechanical property of brittle material non-destructive testing device is characterized in that: it comprises a plane test board; One has the door shaped stent of a top board and two vertical rods, and it is arranged on the described test board; One crossbeam that moves by drive unit, its two ends are arranged on two vertical rods of described door shaped stent; One sensor, it is arranged on the described crossbeam; One pressure head, it is arranged on described sensor bottom.
Described pressure head is a kind of in ball pressure head, Vickers pressure head, the three-point bending pressure head.
Described test board is provided with a through hole corresponding with described ram position, and a cover plate is set on described through hole.
Sensor is installed in the place ahead of described crossbeam.
Two vertical rods of described door shaped stent are two leading screws, the two ends of described two leading screws respectively by Bearing Installation on top board and test board, the drive unit of described crossbeam is the speed reduction unit of a driven by motor, the output terminal of described speed reduction unit drives two leading screws respectively and rotates, and described crossbeam two ends are by being threaded on the described leading screw.
Two vertical rods of described door shaped stent are two guide pillars, the two ends of described two guide pillars are separately fixed on described top board and the test board, the drive unit of described crossbeam is one to revolve the spiral jack unit that is located on the described top board by screw thread, the output terminal top of described spiral jack unit is located on the described crossbeam, between described top board and the crossbeam back-moving spring is set.
The utility model is owing to adopt above technical scheme, and it has the following advantages: 1, the proving installation that provides of the utility model is simple in structure, and volume is little, regulates convenient test, is particularly suitable for the tester and carries, on-line testing occasions such as on-the-spot test.2, use the utility model only on test specimen, to press and establish small circumferential crack, just can be by calculating the strength of materials performance of test specimen, so solved the problem of the insurmountable always for a long time non-destructive strength test to test specimen.3, the utility model is owing to be provided with through hole on test board, backing plate, and the cantilever of spherical indenter such as is provided with at measure, therefore can the shape and size of test specimen not required, convenient test, and can connecting with microscope is noted the microstructure of local material when stressed and is changed.The utility model device is easy to operate, and is simple, can save the wide variety of materials expense, test fee and time, be suitable for on-line testing and monitoring to the fragility member under the service state, and it has boundless application prospect to the development of the national economy and material science research.
Description of drawings
Fig. 1 is the utility model proving installation structural representation
Fig. 2 is the schematic side view of Fig. 1
Fig. 3 is another embodiment of the utility model proving installation
Embodiment
As shown in Figure 1 and Figure 2, mechanical property of brittle material non-destructive testing device of the present utility model comprises a plane test board 1, and its bottom surface is provided with feet, and end face is provided with one and has the door shaped stent that top board 2 and two leading screws 3 are formed.The two ends of two leading screws 3 are vertically mounted on top board 2 and the test board 1 by bearing 4 respectively, and the bottom of two leading screws 3 connects the speed reduction unit 6 that a motor 5 that is fixed on test board 1 bottom surface drives.The rotation of motor 5 can drive two leading screws 3 simultaneously by speed reduction unit 6 and rotate.One crossbeam 7, the two ends of crossbeam 7 are connected on two leading screws 3 by internal thread, and the rotation of two leading screws 3 can drive crossbeam 7 upper and lower moving.With a sensor 8, be arranged on the bottom surface of crossbeam 7, be the bottom that 3-10mm spherical indenter 9 is arranged on sensor 8 with diameter again, make to add the load value that is pressed on the spherical indenter 9 and can show by sensor 8.
In the foregoing description, can on test board 1, offer a through hole 10 corresponding, on through hole 10, place a cover plate 11 with spherical indenter 9 positions.During the test specimen that be difficult for to move in test one (as ground etc.), can open cover plate 11 through hole 10 that spherical indenter 9 leans out test board 1 is tested like this.
In the foregoing description, two vertical rods of door shaped stent also can be two guide pillars 12 (as shown in Figure 3), and 12 two ends of two guide pillars are separately fixed on top board 2 and the test board 1.The drive unit of crossbeam 7 is one to revolve the spiral jack unit 13 (such as a leading screw) that is located on the top board 2 by screw thread, and the output terminal top of spiral jack unit 13 is located on the crossbeam 7.Spiral jack unit 13 has one handle 14, and spiral jack unit 13 drives by manual rotary handle 14, is provided with back-moving spring 15 between top board 2 and crossbeam 7.Handle 14 also can be by drivings such as motor, speed reduction units.
As shown in Figure 2, the front portion of the top board 2 of door shaped stent can lean out two vertical rods, makes the sensor 8 that is installed on it be cantilever-shaped, and the test specimen volume just needn't be placed between two vertical rods of door shaped stent like this, helps bigger test specimen test.
In the foregoing description, spherical indenter also can change other forms of pressure head into according to the test needs, Vickers pressure head for example, three-point bending pressure head etc.
When the utility model uses, at first polished in the part of test specimen or polish, then spherical indenter is aimed at the position of test specimen grinding and buffing, start the crossbeam drive unit, spherical indenter vertically is pressed in polishing or polishing place, load with certain speed, sensor can be measured online load value.Till being loaded on test specimen surface generation one small circumferential crack, load this moment is critical load.By measure obtaining the radius of small circumferential crack, and derive spherical indenter and the contact radius of circle of test specimen in the critical load moment by formula; Or with reading microscope directly measure spherical indenter and test specimen critical load constantly contact radius of circle, local strength's evaluation formula of substitution test specimen then.
The utility model can stand placement work in addition, also can be placed on work under the stereomicroscope by recumbency, and the sample local succeesion in the stand under load process is placed under the microscopical on-line monitoring.Stereomicroscope has digital camera and links to each other with computing machine, the photo of being taken directly can be passed to computing machine and handle.
Claims (9)
1, a kind of mechanical property of brittle material non-destructive testing device, it is characterized in that: it comprises a plane test board; One has the door shaped stent of a top board and two vertical rods, and it is arranged on the described test board; One crossbeam that moves by drive unit, its two ends are arranged on two vertical rods of described door shaped stent; One sensor, it is arranged on the described crossbeam; One pressure head, it is arranged on described sensor bottom.
2, mechanical property of brittle material non-destructive testing device as claimed in claim 1 is characterized in that: described pressure head is a kind of in ball pressure head, Vickers pressure head, the three-point bending pressure head.
3, mechanical property of brittle material non-destructive testing device as claimed in claim 1 is characterized in that: described test board is provided with a through hole corresponding with described ram position, and a cover plate is set on described through hole.
4, mechanical property of brittle material non-destructive testing device as claimed in claim 2 is characterized in that: described test board is provided with a through hole corresponding with described ram position, and a cover plate is set on described through hole.
5, as claim 1 or 2 or 3 or 4 described mechanical property of brittle material non-destructive testing devices, it is characterized in that: sensor is installed in the place ahead of described crossbeam.
6, as claim 1 or 2 or 3 or 4 described mechanical property of brittle material non-destructive testing devices, it is characterized in that: two vertical rods of described door shaped stent are two leading screws, the two ends of described two leading screws respectively by Bearing Installation on top board and test board, the drive unit of described crossbeam is the speed reduction unit of a driven by motor, the output terminal of described speed reduction unit drives two leading screws respectively and rotates, and described crossbeam two ends are by being threaded on the described leading screw.
7, mechanical property of brittle material non-destructive testing device as claimed in claim 5, it is characterized in that: two vertical rods of described door shaped stent are two leading screws, the two ends of described two leading screws respectively by Bearing Installation on top board and test board, the drive unit of described crossbeam is the speed reduction unit of a driven by motor, the output terminal of described speed reduction unit drives two leading screws respectively and rotates, and described crossbeam two ends are by being threaded on the described leading screw.
8, as claim 1 or 2 or 3 or 4 described mechanical property of brittle material non-destructive testing devices, it is characterized in that: two vertical rods of described door shaped stent are two guide pillars, the two ends of described two guide pillars are separately fixed on described top board and the test board, the drive unit of described crossbeam is one to revolve the spiral jack unit that is located on the described top board by screw thread, the output terminal top of described spiral jack unit is located on the described crossbeam, between described top board and the crossbeam back-moving spring is set.
9, mechanical property of brittle material non-destructive testing device as claimed in claim 5, it is characterized in that: two vertical rods of described door shaped stent are two guide pillars, the two ends of described two guide pillars are separately fixed on described top board and the test board, the drive unit of described crossbeam is one to revolve the spiral jack unit that is located on the described top board by screw thread, the output terminal top of described spiral jack unit is located on the described crossbeam, between described top board and the crossbeam back-moving spring is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245650 CN2581969Y (en) | 2002-08-09 | 2002-08-09 | Nondestructive tester for mechanical properties of brittle material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245650 CN2581969Y (en) | 2002-08-09 | 2002-08-09 | Nondestructive tester for mechanical properties of brittle material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2581969Y true CN2581969Y (en) | 2003-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02245650 Expired - Lifetime CN2581969Y (en) | 2002-08-09 | 2002-08-09 | Nondestructive tester for mechanical properties of brittle material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2581969Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235951A (en) * | 2010-04-30 | 2011-11-09 | 胜华科技股份有限公司 | Testing device and testing equipment |
| CN102620988A (en) * | 2012-03-13 | 2012-08-01 | 北京理工大学 | Device and method for testing mechanical properties of ceramic material under constraint condition |
| CN107036886A (en) * | 2017-06-20 | 2017-08-11 | 南京工大建设工程技术有限公司 | Glass curtain wall 3 D deformation in-situ check and test method and device |
-
2002
- 2002-08-09 CN CN 02245650 patent/CN2581969Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235951A (en) * | 2010-04-30 | 2011-11-09 | 胜华科技股份有限公司 | Testing device and testing equipment |
| CN102620988A (en) * | 2012-03-13 | 2012-08-01 | 北京理工大学 | Device and method for testing mechanical properties of ceramic material under constraint condition |
| CN107036886A (en) * | 2017-06-20 | 2017-08-11 | 南京工大建设工程技术有限公司 | Glass curtain wall 3 D deformation in-situ check and test method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xiamen Hongye Engineering Construction Technology Co., Ltd. Assignor: China Building Material Science Institute Contract fulfillment period: 2009.11.6 to 2013.10.1 Contract record no.: 2009351000091 Denomination of utility model: Nondestructive tester for mechanical properties of brittle material Granted publication date: 20031022 License type: Exclusive license Record date: 20091120 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.6 TO 2013.10.1; CHANGE OF CONTRACT Name of requester: XIAMEN CITY HONGYE CONSTRUCTION TECHNOLOGY CO., LT Effective date: 20091120 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120809 Granted publication date: 20031022 |