CN208999202U - A kind of auxiliary clamp of hydrogel tension test - Google Patents

A kind of auxiliary clamp of hydrogel tension test Download PDF

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Publication number
CN208999202U
CN208999202U CN201821448565.6U CN201821448565U CN208999202U CN 208999202 U CN208999202 U CN 208999202U CN 201821448565 U CN201821448565 U CN 201821448565U CN 208999202 U CN208999202 U CN 208999202U
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hydrogel
fastener
positioning column
magnetizer
plate
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CN201821448565.6U
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刘旺玉
孙冬
唐爱民
邓涛
贾智康
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model relates to hydrogel stretching experiment apparatus fields, disclose a kind of auxiliary clamp of hydrogel tension test, including fastener, support plate, two upper clamp plates and two lower clamp plates, the support plate has support rim, two lower clamp plates are installed on support plate, and it is located at the two sides of support rim, the upper surface of the support rim is flushed with the upper surface of two lower clamp plates, the upper surface of two lower clamp plates is mounted on gasket, two upper clamp plates are installed on the upper surface of gasket, the fastener includes upper fastener and lower fastener, the upper fastener is installed on the upper surface of two upper clamp plate stitching portions, the lower fastener is installed on the lower end surface of two lower clamp plate stitching portions.It has the advantage that: avoiding the collet of universal tensile testing machine by the conquassation of hydrogel standard tensile part by upper and lower plywoods cooperation, cutting, thus the accuracy of guarantee test data.

Description

A kind of auxiliary clamp of hydrogel tension test
Technical field
The utility model relates to hydrogel stretching experiment apparatus fields, and in particular to a kind of auxiliary of hydrogel tension test Fixture.
Background technique
Hydrogel is the gel using water as decentralized medium, is a kind of high water-keeping material of high water absorption, is widely used in medicine, raw Object, the fields such as engineering.The mechanical property of general test material commonly use often universal tensile testing machine to the standard component of material into Row tension test.And the material softness of hydrogel itself is brittle, when its mechanical property is tested in progress tension test, traditional is straight Tipping be clipped in universal tensile testing machine method cannot clamping hydrogel standard tensile part well, be easy in operation Cause the destruction of tensioning member.There are mainly two types of common failure modes, may be excessive one is collet clamping force and lead to water Gel tensioning member can be crushed in clamping process, another situation is that collet edge is excessively sharp to be caused clamping hydrogel Shearing force can be generated in the process to cut tensioning member.It is therefore desirable to design a kind of auxiliary clamp to help hydrogel mark Quasi- tensioning member avoids the generated destruction in clamping process.
Utility model content
The purpose of this utility model is to overcome above the shortcomings of the prior art, provide it is a kind of easy for installation, Avoid damage to the auxiliary clamp that hydrogel stretches the hydrogel tension test of standard component.
The purpose of this utility model is realized by the following technical solution: a kind of auxiliary clamp of hydrogel tension test, Including fastener, support plate, two upper clamp plates and two lower clamp plates, the support plate has support rim, two lower folders Plate is installed on support plate, and is located at the two sides of support rim, the upper surface of the upper surface of the support rim and two lower clamp plates It flushes, the upper surface of two lower clamp plates is mounted on gasket, and two upper clamp plates are installed on the upper surface of gasket, described Fastener includes upper fastener and lower fastener, and the upper fastener is installed on the upper surface of two upper clamp plate stitching portions, described Lower fastener is installed on the lower end surface of two lower clamp plate stitching portions.
Further, the gasket is provided with the opening to match with the shape of hydrogel standard tensile part, the gasket Thickness is equal with the thickness of hydrogel standard tensile part.
Further, the edge of the contact surface of the lower clamp plate and hydrogel standard tensile part is provided with fillet, it is described on The edge of the contact surface of clamping plate and hydrogel standard tensile part is provided with fillet.
Further, the lower clamp plate has the first splice ends, inserting column and the first positioning column, the middle part of the inserting column The two sides of support rim, the upper end of the inserting column and upper folder are symmetrically disposed on through the lower end of lower clamp plate, and the inserting column Plate connection, first positioning column is located at the lower end surface of lower clamp plate, and first positioning column is symmetrically disposed on the first splice ends Two sides, the lower fastener is installed on the first positioning column between the first splice ends.
Further, the lower fastener includes the first magnetizer and the first magnetic substance, and first magnetizer is installed on To between the first splice ends, the first magnetizer of two lower clamp plates is connected to each other first positioning column, first magnetic substance and opposite The two piece of first magnetizer connection connect.
Further, first splice ends are provided with the first baltimore groove, and the inserting column is symmetrically disposed on the first baltimore groove Two sides, first positioning column is symmetrically disposed on the two sides of the first baltimore groove, and the first baltimore groove of two lower clamp plates docks shape At mounting hole, the support rim is plugged in mounting hole.
Further, fillet is provided at the upper end-face edge of first baltimore groove.
Further, the upper clamp plate has the second splice ends, spliced eye and the second positioning column, the spliced eye and grafting Column is correspondingly arranged, and the upper end of the inserting column is plugged in spliced eye, and second positioning column is located at the upper surface of upper clamp plate, and Second positioning column is symmetrically disposed on the two sides of the second splice ends, and the upper fastener is installed on the second positioning column to the second spelling It connects between end.
Further, the upper fastener includes the second magnetizer and the second magnetic substance, and second magnetizer is installed on To between the second splice ends, the second magnetizer of two upper clamp plates is connected to each other second positioning column, second magnetic substance and opposite The two piece of second magnetizer connection connect.
Further, second splice ends are provided with the second baltimore groove, and the spliced eye is symmetrically disposed on the second baltimore groove Two sides, second positioning column is symmetrically disposed on the two sides of the second baltimore groove.
Further, fillet is provided at the lower edge of second baltimore groove.
A kind of application method of the auxiliary clamp of hydrogel tension test, includes the following steps:
S1, support plate is placed in a plane, two lower clamp plates is installed on support plate, the first of two lower clamp plates is spelled It connects end and is joined to form mounting hole, the support rim in support plate is located in mounting hole, and the first magnetic substance and two pieces is opposite The the first magnetizer connection connect, so that two lower clamp plates are linked together;
S2, hydrogel standard tensile part is above pressed from both sides along the opening that the length direction of lower clamp plate is placed in gasket, and by two Plate is coupled with lower clamp plate, and the second magnetic substance is connect with the second magnetizer that two pieces are connected to each other, thus by upper and lower plywoods and It is whole that hydrogel standard tensile part is fixed into an assembly;
S3, support plate is taken away, after the assembly fixed is mounted as a whole on universal tensile testing machine, by the first magnetic substance It is removed with the second magnetic substance, starts tension test.
The inventive principle of the utility model are as follows: carry out auxiliary clamping, upper clamp plate and lower clamp plate using upper and lower four clamping plates Fillet, which is provided with, with the contact surface of hydrogel standard tensile part (fillet, the second spill is provided at the upper end-face edge of the first baltimore groove Fillet is provided at the lower edge of slot), it can be to avoid making hydrogel mark because the edge of clamping plate is excessively sharp in clamping process Quasi- tensioning member is sheared power cutting, influences test result.One piece of gasket (silica gel pad) is posted in the upper surface of lower clamp plate, and gasket is opened There is the opening to match with hydrogel standard tensile part size, the thickness of gasket is identical as the thickness of hydrogel standard tensile part, Hydrogel standard tensile part is placed in the opening of two gaskets of docking, in the process that universal tensile testing machine is clamped, stretched In, due to the resilient support of silica gel pad itself, hydrogel standard tensile part can be caused to be crushed to avoid clamping force is excessive.With On design very good solution background technique in hydrogel is destroyed in the test that is previously mentioned two kinds of forms.Upper and lower plywoods It is cooperated each other by inserting column and spliced eye, and has given up general screw threads for fastening mode when fixed, selected Magnetic force between magnetic substance fixes clamping force used to provide, and operation is succinct, and in assembly integral installation in universal tensile Also very convenient magnetic substance of removing carries out tension test, raising efficiency after testing machine.
The utility model has the advantage that compared with the existing technology
1, the utility model is designed reasonably, structure are simple, are carried out by upper and lower four pieces of clamping plates to hydrogel standard tensile part It clamps, the upper and lower grips upper and lower plywoods of universal tensile testing machine are to replace the two of clamping hydrogel standard tensile part End, is stained with gasket in the upper surface of lower clamp plate, hydrogel standard tensile part is consistent with the opening of gasket, is placed on gasket In opening, and the thickness of gasket is identical as the thickness of hydrogel standard tensile part, and the collet for avoiding universal tensile testing machine exists Hydrogel standard tensile part is crushed in clamping process.
2, circle is all provided in the edge of upper and lower plywoods and the contact surface of hydrogel standard tensile part in the utility model Angle is provided with fillet that is, at the upper end-face edge of the first baltimore groove and at the lower edge of the second baltimore groove, avoids upper and lower folder Edges of boards edge is excessively sharp to cut hydrogel standard tensile part.
3, in the utility model using the spliced eye being arranged on the inserting column and upper clamp plate on lower clamp plate by upper and lower plywoods Connection, and clamping force used in fixed upper and lower plywoods is provided using the magnetic force between magnet block, operation is succinct, and when dress With integral installation on universal tensile testing machine after, also it is very convenient remove magnet block carry out tension test, thus lifting test Efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the auxiliary clamp of the hydrogel tension test of the utility model;
Fig. 2 is the structural schematic diagram after the auxiliary clamp assembly of the hydrogel tension test of the utility model;
Fig. 3 is the structural schematic diagram of hydrogel standard tensile part in the utility model;
Fig. 4 is the structural schematic diagram of support plate in the utility model;
Fig. 5 is that the auxiliary clamp of the hydrogel tension test of the utility model is installed on the structure of universal tensile testing machine and shows It is intended to;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the structural representation that tension test is carried out using the auxiliary clamp of the hydrogel tension test of the utility model Figure;
Fig. 8 is the right view of Fig. 7;
In figure, 1 is upper clamp plate;2 be lower clamp plate;3 be support plate;4 be support rim;5 be the first splice ends;6 be grafting Column;7 be the first positioning column;8 be the second splice ends;9 be spliced eye;10 be the second positioning column;11 be the first magnetizer;12 be One magnetic substance;13 be the second magnetizer;14 be the second magnetic substance;15 be gasket;16 be hydrogel standard tensile part;17 be folder Head;18 be the first baltimore groove;19 be the second baltimore groove;20 be opening.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of auxiliary clamp of hydrogel tension test as Figure 1-Figure 8, including fastener, on support plate 3, two Clamping plate 1 and two lower clamp plates 2 have support rim 4 in the support plate 3, and two lower clamp plates 2 are installed on support plate 3, and Positioned at the two sides of support rim 4, the upper surface of the support rim 4 is flushed with the upper surface of two lower clamp plates 2, under two described The upper surface of clamping plate 2 is mounted on gasket 15, and two upper clamp plates 1 are installed on the upper surface of gasket 15, the fastener packet Fastener and lower fastener are included, the upper fastener is installed on the upper surface of two 1 stitching portions of upper clamp plate, the lower fastener It is installed on the lower end surface of two 2 stitching portions of lower clamp plate.Hydrogel standard tensile part 16 is placed in the opening of two gaskets 15, Entirety carries out hydrogel tension test after assembling on universal tensile testing machine;Gasket 15 is silica gel pad, and silica gel pad is viscous It is affixed on the upper surface of lower clamp plate 2, for accepting hydrogel standard tensile part 16, prevents hydrogel standard tensile part 16 and lower clamp plate 2 upper surface directly contacts and damages, and influences test result.
The gasket 15 is provided with the opening 20 to match with the shape of hydrogel standard tensile part 16, the thickness of the gasket 15 It spends equal with the thickness of hydrogel standard tensile part 16.When test, after two lower clamp plate docking, by hydrogel standard tensile part 16 It is placed in the opening 20 for two gaskets 15 being connected to each other, avoids the collet of universal tensile testing machine in clamping process by water The conquassation of gel standard tensile part.
The edge of the lower clamp plate 2 and the contact surface of hydrogel standard tensile part 16 is provided with fillet, the upper clamp plate 1 with The edge of the contact surface of hydrogel standard tensile part 16 is provided with fillet.Upper clamp plate 1 and lower clamp plate 2 and hydrogel standard tensile part The edge of 16 contact surface is provided with fillet, is that upper and lower plywoods edge is excessively sharp thus by hydrogel mark in order to prevent Quasi- tensioning member is cut.
The lower clamp plate 2 has the first splice ends 5, inserting column 6 and the first positioning column 7, and the middle part of the inserting column 6 is run through Lower clamp plate 2, and the lower end of the inserting column 6 is symmetrically disposed on the two sides of support rim 4, the upper end of the inserting column 6 and upper folder Plate 1 connects, and first positioning column 7 is located at the lower end surface of lower clamp plate 2, and first positioning column 7 is symmetrically disposed on the first spelling The two sides at end 5 are connect, the lower fastener is installed between 7 to the first splice ends 5 of the first positioning column.By lower fastener by two Lower clamp plate 2 connects into an entirety;The support rim 4 of support plate 3 is inserted into mounting hole, and it is convex that the lower end of inserting column 6 is located at support The two sides of platform 4 are used to support the positioning of boss 4, and the upper surface of the upper surface and lower clamp plate 2 that make support rim 4 is in same flat On face, when hydrogel standard tensile part 16 is placed in the upper surface of lower clamp plate 2, hydrogel standard tensile part 16 will not be from installation It is fallen in hole, to guarantee the initial configuration of hydrogel standard tensile part 16, it is ensured that the accuracy of test.
The lower fastener includes the first magnetizer 11 and the first magnetic substance 12, and first magnetizer 11 is installed on first Between 7 to the first splice ends 5 of positioning column, after two lower clamp plates 2 splice, two piece of first magnetizer 11 being connected to each other and the first magnetism Body 12 connects.First magnetizer 11 is fixedly installed in the lower end surface of lower clamp plate 2, and is located at the first positioning column 7 to the first and splices Between end 5, it may be assumed that every piece of lower clamp plate 2 is respectively mounted two piece of first magnetizer 11.After two lower clamp plates 2 splice, corresponding two pieces First magnetizer 11 is connected to each other, and the first magnetic substance 12 is connect with two piece of first magnetizer 11 being connected to each other.Pass through the first magnetic substance Two lower clamp plates 2 are connected into an entirety by the attraction of 12 pairs two pieces the first magnetizers 11.
First splice ends 5 are provided with the first baltimore groove 18, and the inserting column 6 is symmetrically disposed on the two of the first baltimore groove 18 Side, first positioning column 7 are symmetrically disposed on the two sides of the first baltimore groove 18, the first baltimore groove 18 docking of two lower clamp plates 2 Mounting hole is formed, the support rim 4 is plugged in mounting hole.The upper surface of support rim 4 and the upper surface of lower clamp plate 2 are in same In one plane, when hydrogel standard tensile part 16 is placed in the upper surface of lower clamp plate 2, hydrogel standard tensile part 16 will not be from It is fallen in mounting hole, is provided with fillet at the upper end-face edge of first baltimore groove 18.Avoid the side in clamping process because of clamping plate Edge is excessively sharp and hydrogel standard tensile part 16 is made to be sheared power cutting.
The upper clamp plate 1 has the second splice ends 8, spliced eye 9 and the second positioning column 10, the spliced eye 9 and inserting column 6 It is correspondingly arranged, and the upper end of the inserting column 6 is plugged in spliced eye 9, second positioning column 10 is located at the upper end of upper clamp plate 1 Face, and second positioning column 10 is symmetrically disposed on the two sides of the second splice ends 8, the upper fastener is installed on the second positioning column Between 10 to the second splice ends 8.The upper surface of two lower clamp plates 2 is installed on after two upper clamp plates 1 are spliced, wherein lower clamp plate 2 In the upper end insertion spliced eye 9 of middle inserting column 6, upper clamp plate 1 and lower clamp plate 2 are integrated.By inserting column 6, spliced eye 9, Cooperation between first positioning column 7, the second positioning column 10, lower fastener and upper fastener, upper clamp plate 1 and lower clamp plate 2 are formed One assembly is whole, is used for hydrogel tension test.
The upper fastener includes the second magnetizer 13 and the second magnetic substance 14, and second magnetizer 13 is installed on second Between 10 to the second splice ends 8 of positioning column, after two upper clamp plates 1 splice, two piece of second magnetizer 13 being connected to each other and the second magnetic Property body 14 connect.Second magnetizer 13 is fixedly installed in the upper surface of upper clamp plate 1, and is located at the second positioning column 10 to the second and spells It connects between end 8, it may be assumed that every piece of upper clamp plate 1 is respectively mounted two piece of second magnetizer 13.After two upper clamp plates 1 splice, corresponding two The second magnetizer of block 13 is connected to each other, and the second magnetic substance 14 is connect with two piece of second magnetizer 13 being connected to each other.Pass through the second magnetism Two upper clamp plates 1 are connected into an entirety by attraction of the body 14 to two piece of second magnetizer 13.
Second splice ends 8 are provided with the second baltimore groove 19, and the spliced eye 9 is symmetrically disposed on the two of the second baltimore groove 19 Side, second positioning column 10 are symmetrically disposed on the two sides of the second baltimore groove 19, at the lower edge of second baltimore groove 19 It is provided with fillet.Second baltimore groove 19 is set and facilitates the pulled out condition for observing hydrogel standard tensile part 16 when test, the second spill It is provided with fillet at the lower edge of slot 19, avoids drawing hydrogel standard because the edge of clamping plate is excessively sharp in clamping process It stretches part 16 and is sheared power cutting.
A kind of application method of the auxiliary clamp of hydrogel tension test, includes the following steps:
S1, support plate 3 is placed in a plane, two lower clamp plates 2 is installed on support plate 3, the of two lower clamp plates 2 One splice ends 5 are joined to form mounting hole, and the support rim 4 in support plate 3 is located in mounting hole, by the first magnetic substance 12 with Two pieces of the first magnetizer 11 connections being connected to each other, so that two lower clamp plates 2 are linked together;
S2, by hydrogel standard tensile part 16 along the opening 20 that the length direction of lower clamp plate 2 is placed in two gaskets 15, and Two upper clamp plates 1 are coupled with lower clamp plate 2, the second magnetic substance 14 is connect with the second magnetizer 13 that two pieces are connected to each other, It is whole to which upper and lower plywoods and hydrogel standard tensile part 16 are fixed into an assembly;
S3, support plate 3 is taken away, after the assembly fixed is mounted as a whole on universal tensile testing machine, by the first magnetism Body 12 and the second magnetic substance 14 are removed, and tension test is started.
Hydrogel standard tensile part 16 is placed in the fixture that upper clamp plate 1 and lower clamp plate 2 form, by upper clamp plate 1 and lower folder Plate 2 is connect with two collets 17 of universal tensile testing machine, clamps upper and lower plywoods by collet 17 to replace clamping hydrogel mark The both ends of quasi- tensioning member 16 prevent 17 clamping force of collet of universal tensile testing machine excessive and lead to hydrogel standard tensile part 16 The case where being crushed in clamping process appearance, it is ensured that the accuracy of test data in hydrogel tension test.
Above-mentioned specific embodiment is the preferred embodiment of the utility model, can not be defined to the utility model, Other any changes made without departing from the technical solution of the utility model or other equivalent substitute modes, are included in Within the protection scope of the utility model.

Claims (9)

1. a kind of auxiliary clamp of hydrogel tension test, it is characterised in that: including fastener, support plate, two upper clamp plates and Two lower clamp plates, the support plate have support rim, and two lower clamp plates are installed on support plate, and are located at support rim Two sides, the upper surface of the support rim are flushed with the upper surface of two lower clamp plates, and the upper surface of two lower clamp plates is pacified Equipped with gasket, two upper clamp plates are installed on the upper surface of gasket, and the fastener includes upper fastener and lower fastener, institute The upper surface that fastener is installed on two upper clamp plate stitching portions is stated, the lower fastener is installed on two lower clamp plate stitching portions Lower end surface.
2. the auxiliary clamp of hydrogel tension test according to claim 1, it is characterised in that: the gasket is provided with and water The thickness of the opening that the shape of gel standard tensile part matches, the gasket is equal with the thickness of hydrogel standard tensile part.
3. the auxiliary clamp of hydrogel tension test according to claim 1, it is characterised in that: the lower clamp plate and water-setting The edge of the contact surface of glue standard tensile part is provided with fillet, the side of the upper clamp plate and the contact surface of hydrogel standard tensile part Fillet is provided at edge.
4. the auxiliary clamp of hydrogel tension test according to claim 1, it is characterised in that: the lower clamp plate has the Lower clamp plate is run through at the middle part of one splice ends, inserting column and the first positioning column, the inserting column, and the lower end of the inserting column is symmetrical The two sides of support rim are set to, the upper end of the inserting column is connect with upper clamp plate, and first positioning column is located at lower clamp plate Lower end surface, and first positioning column is symmetrically disposed on the two sides of the first splice ends, the lower fastener is installed on the first positioning Column is between the first splice ends.
5. the auxiliary clamp of hydrogel tension test according to claim 4, it is characterised in that: the lower fastener includes First magnetizer and the first magnetic substance, first magnetizer are installed on the first positioning column between the first splice ends, under two First magnetizer of clamping plate is connected to each other, and first magnetic substance is connect with two piece of first magnetizer being connected to each other.
6. the auxiliary clamp of hydrogel tension test according to claim 4, it is characterised in that: first splice ends are opened There is the first baltimore groove, the inserting column is symmetrically disposed on the two sides of the first baltimore groove, and first positioning column is symmetrically disposed on First baltimore groove of the two sides of one baltimore groove, two lower clamp plates docks to form mounting hole, and the support rim is plugged in mounting hole, Fillet is provided at the upper end-face edge of first baltimore groove.
7. the auxiliary clamp of hydrogel tension test according to claim 4, it is characterised in that: the upper clamp plate has the Two splice ends, spliced eye and the second positioning column, the spliced eye are correspondingly arranged with inserting column, and the upper end grafting of the inserting column In spliced eye, second positioning column is located at the upper surface of upper clamp plate, and second positioning column is symmetrically disposed on the second splicing The two sides at end, the upper fastener are installed on the second positioning column between the second splice ends.
8. the auxiliary clamp of hydrogel tension test according to claim 7, it is characterised in that: the upper fastener includes Second magnetizer and the second magnetic substance, second magnetizer are installed on the second positioning column between the second splice ends, on two Second magnetizer of clamping plate is connected to each other, and second magnetic substance is connect with two piece of second magnetizer being connected to each other.
9. the auxiliary clamp of hydrogel tension test according to claim 7, it is characterised in that: second splice ends are opened There is the second baltimore groove, the spliced eye is symmetrically disposed on the two sides of the second baltimore groove, and second positioning column is symmetrically disposed on The two sides of two baltimore grooves are provided with fillet at the lower edge of second baltimore groove.
CN201821448565.6U 2018-09-05 2018-09-05 A kind of auxiliary clamp of hydrogel tension test Active CN208999202U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109187173A (en) * 2018-09-05 2019-01-11 华南理工大学 A kind of auxiliary clamp and its application method of hydrogel tension test
CN111487130A (en) * 2020-04-16 2020-08-04 河海大学 Novel centre gripping test equipment of exempting from of aquogel tensile test

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109187173A (en) * 2018-09-05 2019-01-11 华南理工大学 A kind of auxiliary clamp and its application method of hydrogel tension test
CN109187173B (en) * 2018-09-05 2023-08-22 华南理工大学 Auxiliary clamp for hydrogel tensile test and application method thereof
CN111487130A (en) * 2020-04-16 2020-08-04 河海大学 Novel centre gripping test equipment of exempting from of aquogel tensile test

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