CN212340841U

CN212340841U - Improved simple sample strip and fixture for tensile strength test of ceramic material

Info

Publication number: CN212340841U
Application number: CN202021024934.6U
Authority: CN
Inventors: 操龙庆; 金红节; 肖正帮
Original assignee: Suzhou First Test Technology Co ltd
Current assignee: Suzhou First Test Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-01-12
Anticipated expiration: 2030-06-05

Abstract

The improved simple sample strip and fixture for the tensile strength test of the ceramic material comprise a long sample strip (1) and a connector (2); the appearance of the connector (2) is a square box shape, a threaded hole (22) is formed in the middle of the rear wall, a seat groove (21) with an open front wall is formed in the front side of the threaded hole (22) in the middle of the connector (2), the long spline (1) is long in strip shape, the end part of the long spline (1) is placed into the seat groove (21), and the outer wall of the end part of the long spline (1) is bonded on the inner wall of the seat groove (21) through glue (3). Simplify the structure and the size of spline, use with the connector matching of innovative design, both make things convenient for the preparation and make things convenient for the test installation, the protection spline is showing material saving moreover, increases the yields of sample preparation simultaneously, easy operation, and efficiency of software testing is showing and is promoting.

Description

Improved simple sample strip and fixture for tensile strength test of ceramic material

Technical Field

The utility model relates to an innovative equipment device's institutional advancement technique, especially ceramic material tensile strength test improves simple and easy spline and anchor clamps.

Background

Ceramic materials are different from metal materials and plastic materials, the former has high hardness and poor toughness and plasticity, and has a plurality of defects when used as structural parts, but the ceramic materials are good heat-resistant materials, and people are continuously researching how to overcome the defects so as to better use the ceramic materials on the structural parts, which means that a tensile test method of the ceramic materials needs to be correspondingly developed to know the tensile strength reflecting the basic properties of the ceramic materials. But when the tensile test is carried out, the clamping end of the test sample can be directly clamped by using a common clamp to break the clamping end of the test sample, so that the test result is invalid.

According to ISO 15490 test standard, as shown in figure 1, the ceramic material is stretched into 114mm sample strip to be made into dumbbell shape, and the middle of the holding part with 32mm width at both ends is opened

And the through hole is used for fixing the sample strip by enabling the core rod to penetrate through the through hole at two ends when the sample strip is tested and installed.

In the prior art, the spline and the spline fixing structure related to the experimental test method have the defects that: the fixing mode increases the difficulty of the preparation process of the sample strips, the ceramic plate needs to be cut into a dumbbell shape, through holes are formed in two ends of the ceramic plate, and the yield of the prepared sample strips is low; moreover, the wedge-shaped clamp is used for directly clamping the sample strip in a mechanical mode, the clamping end of the sample strip is easily clamped, the sample strip is easily broken at the through holes at the two ends in the test process, the sample strip is provided with mechanical holes at the through holes, the most fragile part of the whole sample strip is probably at the through holes, the tensile strength result of the breaking mode is invalid, and therefore the difficulty in the test process is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple and easy spline and anchor clamps are improved in ceramic material tensile strength test, solve above technical problem.

The purpose of the utility model is realized by the following technical measures: comprises a long sample strip and a connector; the connector appearance is the square box type, and wherein rear wall middle part has the screw hole, and there is the open seat groove of antetheca connector middle part screw hole front side, and microscler spline is rectangular shape, and during the seat groove was put into to microscler spline tip, microscler spline tip outer wall passed through glue and bonds on the seat inslot wall.

In particular, the elongated splines are of equal-width rectangular plate-shaped structures.

In particular, the pocket thickness is greater than the elongated spline thickness but not more than 1 mm.

In particular, the pocket width is the same as the elongated spline width.

In particular, the connector width is the same as the elongated spline width.

In particular, the top surface of the end of the elongated spline is lower than the threaded hole.

The utility model discloses an advantage and effect: simplify the structure and the size of spline, use with the connector matching of innovative design, both make things convenient for the preparation and make things convenient for the test installation, the protection spline is showing material saving moreover, increases the yields of sample preparation simultaneously, easy operation, and efficiency of software testing is showing and is promoting.

Drawings

Fig. 1 is a schematic diagram of a prior art dumbbell-shaped bar strip structure.

Figure 2 is a schematic diagram of an improved elongated spline structure in an embodiment of the present invention.

Fig. 3 is a schematic view of an improved connector structure in an embodiment of the present invention.

Fig. 4 is a schematic view of the connection and installation structure in the embodiment of the present invention.

The reference numerals include:

1-long sample strip, 2-connector, 3-glue, 21-seat groove and 22-threaded hole.

Detailed Description

The utility model discloses the principle lies in, for the technology of simplifying processing spline, can improve into microscler spline 1 dumbbell type spline, and this kind of processing mode not only the preparation method is simple, the yields is fine, and moreover, the spline size of processing out is more accurate. Simultaneously, the innovative design connector, convenient and the cooperation of new design spline adopt adhesive bonding, the protection position of connecting to the protection spline.

The utility model discloses a: an elongated spline 1 and a connector 2.

The present invention will be further explained with reference to the drawings and examples.

Example 1: as shown in fig. 2, 3 and 4, the connector 2 is shaped as a square box, wherein a threaded hole 22 is formed in the middle of the rear wall, a seat groove 21 with an open front wall is formed in the front side of the threaded hole 22 in the middle of the connector 2, the long spline 1 is in a long strip shape, the end part of the long spline 1 is placed in the seat groove 21, and the outer wall of the end part of the long spline 1 is bonded on the inner wall of the seat groove 21 through glue 3.

In the foregoing, the long splines 1 have a rectangular plate-shaped structure with an equal width.

In the foregoing, the thickness of the seating grooves 21 is greater than the thickness of the elongated bar 1 but not more than 1 mm.

In the foregoing, the width of the seating groove 21 is the same as the width of the elongated spline 1.

In the foregoing, the width of the connector 2 is the same as that of the elongated spline 1.

In the foregoing, the top surface of the end of the elongated spline 1 is lower than the threaded hole 22.

In the embodiment of the present invention, the preferred elongated spline 1 size: the length L is 80mm plus or minus 2mm, the width b is 10.0mm plus or minus 0.2mm, and the thickness h is 4.0mm plus or minus 0.2 mm. The height and width of the connector 2 are 10mm and the length is 32mm respectively. The seat groove 21 is 4.3mm thick and 10mm wide. The threaded hole 22 is an M8 threaded hole and is 15mm long.

The embodiment of the utility model provides an in, glue 3's bonding property is not good, can lead to connector and spline to bond insecurely, thereby it can the slippage lead to the test failure to stretch the in-process, consequently, preferably use AB all-purpose powerful glue, toast 4h under 70 ℃ of environment after the bonding, through many times experimental verification, bonding strength is higher than the tensile strength of microscler spline 1 itself far away.

The embodiment of the utility model provides an in, adopt powerful omnipotent glue 3 to bond microscler spline 1's both ends and metal connector 2, metal connector 2 is connected with tensile testing machine again, avoids microscler spline 1 to receive mechanical stress at the clamping in-process, and this kind of connected mode is all adopted at the upper and lower both ends of spline.

The embodiment of the utility model provides an in, adopt glue 3 to connect spline and connector 2, area of contact between them is big more, and bonding strength is just big, so connector 2 designs into the spill, with two face in close contact with of width direction of sample, the grooved width of seat groove 21 of connector 2 than microscler spline 1 thickness go out 0.1 ~ 0.15mm can, 2 bottom tapping holes 22 of connector are fixed with the cooperation of tensile machine joint 5.

Claims

1. The improved simple sample strip and fixture for the tensile strength test of the ceramic material comprise a long sample strip (1) and a connector (2); the rectangular spline joint is characterized in that the shape of the joint (2) is a square box shape, a threaded hole (22) is formed in the middle of the rear wall, a seat groove (21) with an open front wall is formed in the front side of the threaded hole (22) in the middle of the joint (2), the rectangular spline (1) is in a rectangular shape, the end part of the rectangular spline (1) is placed in the seat groove (21), and the outer wall of the end part of the rectangular spline (1) is bonded on the inner wall of the seat groove (21) through glue (3).

2. The improved simple spline and fixture for testing the tensile strength of ceramic materials as claimed in claim 1, wherein the elongated spline (1) is a rectangular plate-shaped structure with the same width.

3. The improved plain bar and fixture for ceramic tensile testing as defined in claim 1 wherein the thickness of the seating groove (21) is greater than the thickness of the elongated bar (1) but not more than 1 mm.

4. The improved plain spline and fixture for ceramic tensile testing as defined in claim 1 wherein the width of the seating groove (21) is the same as the width of the elongated spline (1).

5. The improved simple spline and fixture for ceramic material tensile strength testing as claimed in claim 1, wherein the width of the connectors (2) is the same as the width of the elongated spline (1).

6. The improved simple bar and jig for ceramic material tensile strength testing as defined in claim 1 wherein the top surface of the end of the elongated bar (1) is lower than the threaded hole (22).