CN201653390U - Testing device of transverse displacement component in I/III compound fracture toughness test - Google Patents
Testing device of transverse displacement component in I/III compound fracture toughness test Download PDFInfo
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- CN201653390U CN201653390U CN2010201636914U CN201020163691U CN201653390U CN 201653390 U CN201653390 U CN 201653390U CN 2010201636914 U CN2010201636914 U CN 2010201636914U CN 201020163691 U CN201020163691 U CN 201020163691U CN 201653390 U CN201653390 U CN 201653390U
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- connecting rod
- fracture toughness
- loading pin
- displacement
- compound fracture
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Abstract
The utility model relates to a testing device of a transverse displacement component in an I/III compound fracture toughness test, which comprises a U-shaped hook, wherein a loading pin is arranged on the U-shaped hook, and a sample is arranged on the loading pin; one end of the loading pin is connected with a connecting rod, and the other end thereof is provided with a thick nut and a thin nut; the outer side of the U-shaped hook is provided with the connecting rod through the loading pin, and the lower end of the connecting rod is connected with a displacement sensor; and the displacement sensor is contacted with a slide block. A probe of the displacement sensor is adjusted, so that the indicating value of the displacement sensor is 0, and the indicating values of the displacement sensor are recorded every 30 seconds, and the corresponding load values are recorded; a load is taken as an x-coordinate, and the transverse displacement is taken as a y-coordinate to draw a curve; and the transverse displacement value corresponding to any load can be obtained by a formula, and longitudinal displacement and load values which are automatically self-recorded by the device so as to complete the calculation of I/III compound fracture toughness. The utility model has the characteristics of convenient use and low cost.
Description
Technical field
The utility model relates to a kind of proving installation, is specifically related to the proving installation of transversal displacement component in the compound fracture toughness test of a kind of I/III.
Be mainly used in transversal displacement component in the compound fracture toughness test of test I/III.
Background technology
The method of testing of I type fracture toughness is ripe, and relevant standard issues, yet under the situation of reality, material is subjected to is not only normal stress, but complicated stress state.Therefore need suitable parameters that the germinating and the expansion of crackle under the compound stress condition are described, this is crucial on engineering, and, also observe in the reality, in some toughness materials, initial plane crackle is during expanding, also change direction slowly, become the inclined-plane, and for many materials, I type fracture toughness is not conservative, especially the crackle in the reality always varies, even normal stress load, the crackle that produces on the material is not necessarily pure I type also, therefore compound fracture toughness is studied in urgent requirement.Present continuous invention along with anchor clamps, updating of test method, the expert of the compound fracture toughness of research I/II is more and more, but the expert for the research of I/III composite rupture toughness also mainly is limited to abroad at present, mainly be the test method existing problems, difficult in the process of the test, cause the research of I/III composite rupture toughness extensively not launch.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide the proving installation of transversal displacement component in the compound fracture toughness test of a kind of I/III, has characteristics easy to use, with low cost.
To achieve these goals, the technical solution adopted in the utility model is: the proving installation of transversal displacement component in the compound fracture toughness test of a kind of I/III, include a U type hook 1, U type hook 1 is provided with loading pin 3, loading pin 3 is provided with sample 2, and the other end of loading pin 3 is provided with high nut 7 and thin nut 8, and U type hook 1 outside is provided with connecting rod 4 by loading pin 3, the lower end of connecting rod 4 links to each other with displacement transducer 6, and displacement transducer 6 contacts with slide block 5.
Described sample 2 is placed on the center of loading pin 3.
Described connecting rod 4 is a Z font connecting rod.
Described slide block 5 must have enough rigidity and surfaceness, and is marked with center line.
Described connecting rod 4 tops are divided into circular hole, link to each other with loading pin 3, connecting rod 4 bottoms are divided into slotted hole, link to each other with displacement transducer 6, regulate the position of displacement transducer 6 by slotted hole, guarantee that the probe of displacement transducer 6 and slide block 5 center lines and sample 2 position of center line align.
Because the utility model sample 2 links to each other with U type hook 1 by loading pin 3,4 connecting rods 4 of fixed displacement sensor 6 usefulness link to each other with loading pin 3 one ends, the other end of loading pin 3 screws with high nut 7, guarantee that connecting rod 4 can not become flexible or rotate, high nut 7 adds a thin nut 8 and is used to lock high nut 7, guaranteeing can be because of not stressed and loosening in the process of the test, and this equipment has characteristics easy to use, with low cost.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in further detail.Referring to accompanying drawing, the proving installation of transversal displacement component in the compound fracture toughness test of a kind of I/III, include a U type hook 1, U type hook 1 is provided with loading pin 3, and loading pin 3 is provided with sample 2, and sample 2 links to each other with U type hook 1 by loading pin 3, sample 2 is placed on the center of loading pin 3, one end of loading pin 3 is connected with connecting rod 4, and the other end of loading pin 3 is provided with high nut 7 and thin nut 8, and thin nut 8 is used to guarantee that connecting rod 4 can not become flexible or rotate; U type hook 1 outside is provided with connecting rod 4 by loading pin 3, connecting rod 4 is a Z font connecting rod, connecting rod 4 must have enough rigidity, guarantee in the process of the test not elastic deformation because of the stressed measuring accuracy that makes a difference of popping one's head in, the lower end of connecting rod 4 links to each other with displacement transducer 6, displacement transducer 6 reliably is connected with connecting rod 4 by the slotted hole of connecting rod 4, cannot not guarantee looseningly and rotate, the index dial that will guarantee displacement transducer 6 simultaneously toward the outer side, be convenient to sense data and take pictures, when displacement transducer 6 contacts with slide block 5, guarantee its alignment probe slide block 5 center lines, slide block 5 must have enough big rigidity and enough little surfaceness, and is marked with center line, is convenient to the alignment of displacement sensor 6 and slide block 5 center lines.Slide block 5 adopts cementing agent to be connected on the sample 2, and the center line of slide block 5 and sample 2 must align, and will guarantee that simultaneously the cementing agent smearing thickness is even, the least possible use cementing agent under bonding reliable situation.Connecting rod 4 tops are divided into circular hole, link to each other with loading pin 3, and connecting rod 4 bottoms are divided into slotted hole, link to each other with displacement transducer 6, by the position of slotted hole adjusting displacement transducer 6, guarantee that its probe aligns with slide block 5 center lines.
Principle of work of the present utility model is:
Probe positions must align with slide block center line and sample center line.Before on-test, regulate displacement sensor probe, make that the displacement transducer indicated value is 0, in process of the test every 30 seconds recorded bit displacement sensor indicated values, write down corresponding load value simultaneously, also can take the value of lateral displacement of load value and displacement transducer indication with camera simultaneously, be horizontal ordinate then with load, with the transversal displacement is ordinate, curve plotting, set up the relation between transversal displacement and the load,, utilize least square method by regretional analysis, can obtain the relation formula between transversal displacement and the load, can obtain the value of lateral displacement of arbitrary load correspondence by formula, cooperating equipment from the length travel and the load value of record, can be finished the calculating of the compound fracture toughness of I/III automatically then.The utility model not only cost is low, and is convenient to implement, and can measure transversal displacement component in the compound fracture toughness test of I/III more accurately.For the research of the compound fracture toughness of I/III provides strong instrument.
Claims (5)
1. the proving installation of transversal displacement component in the compound fracture toughness test of I/III, include a U type hook (1), it is characterized in that, U type hook (1) is provided with loading pin (3), loading pin (3) is provided with sample (2), one end of loading pin (3) is connected with connecting rod (4), its other end is provided with high nut (7) and thin nut (8), U type hook 1 outside is provided with connecting rod (4) by loading pin (3), the lower end of connecting rod (4) links to each other with displacement transducer (6), and displacement transducer (6) contacts with slide block (5).
2. the proving installation of transversal displacement component is characterized in that in the compound fracture toughness test of a kind of I/III according to claim 1, and described sample (2) is placed on the center of loading pin (3).
3. the proving installation of transversal displacement component is characterized in that in the compound fracture toughness test of a kind of I/III according to claim 1, and described connecting rod (4) is a Z font connecting rod.
4. the proving installation of transversal displacement component is characterized in that in the compound fracture toughness test of a kind of I/III according to claim 1, and described slide block (5) is marked with center line.
5. according to the proving installation of transversal displacement component in claim 1 or the compound fracture toughness test of 3 described a kind of I/III, it is characterized in that, described connecting rod (4) top is divided into circular hole, link to each other with loading pin (3), connecting rod (4) bottom is divided into slotted hole, link to each other with displacement transducer (6), regulate the position of displacement transducer (6), guarantee that the probe of displacement transducer (6) and slide block (5) center line and sample (2) position of center line align by slotted hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201636914U CN201653390U (en) | 2010-04-20 | 2010-04-20 | Testing device of transverse displacement component in I/III compound fracture toughness test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201636914U CN201653390U (en) | 2010-04-20 | 2010-04-20 | Testing device of transverse displacement component in I/III compound fracture toughness test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653390U true CN201653390U (en) | 2010-11-24 |
Family
ID=43118631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201636914U Expired - Fee Related CN201653390U (en) | 2010-04-20 | 2010-04-20 | Testing device of transverse displacement component in I/III compound fracture toughness test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546482A (en) * | 2016-10-08 | 2017-03-29 | 四川大学 | For the test specimen component and method of testing of the test of fragile material I III Mixed Mode Fractures toughness |
-
2010
- 2010-04-20 CN CN2010201636914U patent/CN201653390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546482A (en) * | 2016-10-08 | 2017-03-29 | 四川大学 | For the test specimen component and method of testing of the test of fragile material I III Mixed Mode Fractures toughness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20110420 |