CN103424310A - Method for testing specimen slice tensile rate and clamping fixture - Google Patents
Method for testing specimen slice tensile rate and clamping fixture Download PDFInfo
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- CN103424310A CN103424310A CN2013103666749A CN201310366674A CN103424310A CN 103424310 A CN103424310 A CN 103424310A CN 2013103666749 A CN2013103666749 A CN 2013103666749A CN 201310366674 A CN201310366674 A CN 201310366674A CN 103424310 A CN103424310 A CN 103424310A
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- puller system
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Abstract
The invention relates to a method for testing a specimen slice tensile rate and a clamping fixture. The method includes that a metal rod is adopted to press two ends of a specimen into a clamping plate groove, a fixing screw is screwed down, an upper clamping plate and a lower clamping plate are used for clamping the metal rod, and therefore the two ends of a specimen slice are clamped; a clamping fixture is adopted to clamp the two ends of the specimen slice, two small clamping clips are adopted to clamp the specimen slice in proper positions thereof when a stretching length of the specimen slice is tested at a low temperature, a small rope is connected between the small clamping clips and the lower clamping plate, one mechanism on the lower clamping plate can ensure the small rope to be pulled out and drawn back smoothly, a tensile machine is started to pull cut the specimen slice, and the stretching rate of the specimen slice can be accurately obtained by reading stretching distance data recoded in the tensile machine and calculating the manually-measured length of the small rope between the small clamping clips and the lower clamping plate.
Description
Technical field
The present invention relates to a kind of method and clamping device of testing the test piece extensibility, particularly a kind of ultralow temperature is tested method and the clamping device of test piece extensibility, can when low temperature and normal temperature tension tester are tested, use, be mainly used in the use while carrying out cryogenic testing of ultralow temperature tension tester.
Technical background
When carrying out the tension test of test piece normal temperature, by fixture, the two ends of dumbbell shaped test piece are clamped.Clamp with clamper at the position two ends selected in test piece, by the variable in distance between the clamper of two ends, can show the length growth rate that very clearly records test piece in dialog boxes at the computer of equipment, at present, disclosed existing clamping device, mostly use lever principle that test piece is placed on lower plate, the mode that compresses test piece with the train wheel bridge of sheet is clamped test piece, contact area with test piece is less, upper lower plate is very large to the snap-in force of test piece, test piece is compressed to position and form damage, when stretching, easily test piece is broken in the place compressed, particularly temperature lower than the low-temperature condition of-40 ℃ under, when the toughness of test piece obviously reduces, because the effect of pressure is easy to break.During higher than-40 ℃, generally adopt two fluorescent powder round dots on location point selected in test piece when test temperature, during stretching, the specific device of puller system, by two fluorescent powder points of induction, records two distances between fluorescent powder point, thereby draws the length growth rate of test piece.When test temperature, during lower than-40 ℃, dot fluorescent powder easily comes off in the test piece drawing process, can't mark, and outside designated length, test piece also has certain elongation to measure simultaneously.
Summary of the invention
Patent of the present invention has just well solved above-mentioned technical matters, provides a kind of novel clamping device to clamp test piece, is increasing rope hauling device between clamp device and puller system for measuring the measurement of extensibility under low-temperature condition simultaneously:
A kind of puller system tensile test specimen clamping device, described fixture comprises pole, train wheel bridge and lower plate and trip bolt, described upper and lower clamping plate one end connects, and the two opposite face has semicircular groove, described pole is placed between train wheel bridge and lower plate in groove, by the fastening upper and lower clamping plate of trip bolt, the train wheel bridge of fixture can overturn around hinge in 90 ° of scopes.
Further, be provided with can be from lower decks indentation and the rope of pulling out for described lower plate.
Described pole can be not allow yielding material in stressed situation outside, and surface has embossing or wraps up soft latex film to increase the friction force contacted with test piece.
A kind ofly test the method that length growth rate is drawn in test piece, fix test piece on described fixture, fixture is connected on the puller system hook, choose segment length two ends and accompany little retaining wedge in the middle of test piece, be provided with telescopic rope between little retaining wedge and lower plate, during the puller system tensile test specimen, little retaining wedge moves together with test piece, described rope is drawn out, after test piece is broken, puller system quits work, and measures rope and pulls out length, demonstration length in conjunction with puller system obtains tensile elongation, calculates the extensibility of test piece.
The clamping of test piece of the present invention is broken through traditional installation way, has clamping fast, simply, and clamping is firm, protects test piece simultaneously, improves the characteristics of experiment success rate.
Solve the accurate-metering problem of test piece tensile elongation under low-temperature condition, thereby calculate accurately the length growth rate of test piece.
The accompanying drawing explanation:
The front view during test of Fig. 1 puller system tensile test specimen clamping device
The vertical view during test of Fig. 2 puller system tensile test specimen clamping device
1, train wheel bridge 2, clip hold 3, test piece 4, trip bolt 5, restrict 6, pole 7, lower plate 8, puller system hook.
Specific embodiment
A kind of puller system tensile test specimen clamping device, fixture comprises pole 6, train wheel bridge 1 and lower plate 7, upper and lower clamping plate 1, semicircular groove is arranged on 7, pole 6 is placed between train wheel bridge 1 and lower plate 7, fastening by trip bolt 4, fixture is chosen stainless steel material, and described pole wraps up soft latex film to increase the friction force contacted with test piece.
During test, fix test piece 3 on described fixture, fixture is connected on puller system hook 8, choosing segment length two ends in the middle of test piece 3 accompanies clip and holds 2, but clip hold 2 and lower plate 7 between the rope 5 that is provided with indentation and pulls out, during puller system tensile test specimen 3, clip 2 motions together with test piece 3 that hold, described rope 5 is drawn out, after test piece 3 is broken, puller system quits work, and measures rope and pulls out length, demonstration length in conjunction with puller system obtains tensile elongation, calculates the extensibility of test piece.
Claims (7)
1. a puller system tensile test specimen clamping device, it is characterized in that: described fixture comprises pole (6), train wheel bridge (1) and lower plate (7) and trip bolt (4), described upper and lower clamping plate (1,7) end connects, and the two opposite face has semicircular groove, described pole (6) is placed between train wheel bridge (1) and lower plate (7) in groove, by the fastening upper and lower clamping plate of trip bolt (4) (1,7).
2. a kind of puller system tensile test specimen clamping device according to claim 1, it is characterized in that: described lower plate (7) is provided with can be from lower decks (7) indentation and the rope of pulling out (5).
3. a kind of puller system tensile test specimen clamping device according to claim 1, it is characterized in that: the train wheel bridge of fixture (1) can overturn around hinge in 90 ° of scopes.
4. a kind of puller system tensile test specimen clamping device according to claim 1, it is characterized in that: described pole (6) surface has embossing.
5. a kind of puller system tensile test specimen clamping device according to claim 1, is characterized in that: the soft latex film of the upper parcel of described pole (6).
6. a right to use requires 1 puller system tensile test specimen clamping device to test the method for test piece length growth rate, it is characterized in that: described clamp clamps is used respectively in test piece (3) two ends, the two ends of fixture connect puller system hook (8) tensile test specimen (3), the test piece of measuring after elongating obtains tensile elongation, calculates length growth rate.
7. the method that length growth rate is drawn in test test piece according to claim 5, it is characterized in that: described clamp clamps is used respectively in test piece (3) two ends, choose segment length two ends and accompany little retaining wedge (2) in the middle of the test piece fixed (3), be provided with telescopic rope (5) between little retaining wedge (2) and lower plate (7), puller system tensile test specimen (3), little retaining wedge (2) moves together with test piece, described rope (5) is drawn out, after test piece is broken, puller system quits work, measure rope and pull out length, demonstration length in conjunction with puller system obtains tensile elongation, calculate the extensibility of test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366674.9A CN103424310B (en) | 2013-08-21 | 2013-08-21 | A kind of method testing test piece extensibility and clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366674.9A CN103424310B (en) | 2013-08-21 | 2013-08-21 | A kind of method testing test piece extensibility and clamping device |
Publications (2)
| Publication Number | Publication Date |
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| CN103424310A true CN103424310A (en) | 2013-12-04 |
| CN103424310B CN103424310B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310366674.9A Expired - Fee Related CN103424310B (en) | 2013-08-21 | 2013-08-21 | A kind of method testing test piece extensibility and clamping device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198253A (en) * | 2014-09-15 | 2014-12-10 | 英业达科技有限公司 | Test piece and extension test method utilizing same |
| CN105486537A (en) * | 2016-02-01 | 2016-04-13 | 复旦大学附属中山医院 | Tissue slice tool rest |
| CN112098232A (en) * | 2018-03-20 | 2020-12-18 | 国网山东省电力公司济宁供电公司 | Method for measuring ultimate tensile length of test piece |
| CN112129624A (en) * | 2020-10-23 | 2020-12-25 | 英利能源（中国）有限公司 | Test method for tensile property of back plate |
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| US5581040A (en) * | 1995-11-01 | 1996-12-03 | Lin; Wei-Hwang | Multi-functional hydraulic grip |
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| CN201607366U (en) * | 2010-02-04 | 2010-10-13 | 西北工业大学 | Tensile test fixture |
| CN201740698U (en) * | 2010-07-01 | 2011-02-09 | 诸城市大业金属制品有限责任公司 | Clamp of tension machine |
| JP2012149943A (en) * | 2011-01-18 | 2012-08-09 | Shimadzu Corp | Material tester |
| CN102680320A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨工业大学 | Fixture for testing tensile properties of ultrathin flexible membrane materials |
| CN102879267A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Unilateral plastic film stretching test method and device based on constant strain rate |
| CN103163018A (en) * | 2013-02-01 | 2013-06-19 | 西北工业大学 | Fixture for thin-walled tube high-temperature tension test |
| CN103163019A (en) * | 2013-03-04 | 2013-06-19 | 江苏大学 | Tensile test special fixture used for sheet metal or metal foil and using method |
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2013
- 2013-08-21 CN CN201310366674.9A patent/CN103424310B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581040A (en) * | 1995-11-01 | 1996-12-03 | Lin; Wei-Hwang | Multi-functional hydraulic grip |
| CN201277929Y (en) * | 2008-08-18 | 2009-07-22 | 武汉钢铁(集团)公司 | Circular stair sample drawing clamp |
| CN201607366U (en) * | 2010-02-04 | 2010-10-13 | 西北工业大学 | Tensile test fixture |
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| JP2012149943A (en) * | 2011-01-18 | 2012-08-09 | Shimadzu Corp | Material tester |
| CN102680320A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨工业大学 | Fixture for testing tensile properties of ultrathin flexible membrane materials |
| CN102879267A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Unilateral plastic film stretching test method and device based on constant strain rate |
| CN103163018A (en) * | 2013-02-01 | 2013-06-19 | 西北工业大学 | Fixture for thin-walled tube high-temperature tension test |
| CN103163019A (en) * | 2013-03-04 | 2013-06-19 | 江苏大学 | Tensile test special fixture used for sheet metal or metal foil and using method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198253A (en) * | 2014-09-15 | 2014-12-10 | 英业达科技有限公司 | Test piece and extension test method utilizing same |
| CN105486537A (en) * | 2016-02-01 | 2016-04-13 | 复旦大学附属中山医院 | Tissue slice tool rest |
| CN112098232A (en) * | 2018-03-20 | 2020-12-18 | 国网山东省电力公司济宁供电公司 | Method for measuring ultimate tensile length of test piece |
| CN112129624A (en) * | 2020-10-23 | 2020-12-25 | 英利能源（中国）有限公司 | Test method for tensile property of back plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103424310B (en) | 2016-08-10 |
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Address after: Xinhua Road 412003 Hunan province Zhuzhou Hetang District No. 818 Applicant after: Rubber studying and designing institute, China Chemical Industry Zhuzhou company limited Address before: Xinhua Road 412003 Hunan province Zhuzhou Hetang District No. 818 Applicant before: Zhuzhou Research & Design Institute, Chemchina Rubber Corp. |
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Free format text: CORRECT: APPLICANT; FROM: CHINA CHEMICAL INDUSTRY RUBBER ZHUZHOU RESEARCH AND DESIGN INSTITUTE TO: CHINA CHEMICAL INDUSTRY ZHUZHOU RUBBER RESEARCH AND DESIGN INSTITUTE CO., LTD. |
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