CN219201102U

CN219201102U - Multi-point bending glass material high-temperature indentation radial crack repairing testing device

Info

Publication number: CN219201102U
Application number: CN202223575420.1U
Authority: CN
Inventors: 杨杰; 何洪途; 余家欣; 张亚锋; 齐慧敏; 赖建平; 赵凡
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-16
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a device for repairing and testing radial cracks of high-temperature pressure marks of a multipoint bent glass material, which comprises a bottom plate; a sample fixing member connected to the base plate; the tested sample fixing component comprises a plurality of cylinder supporting pieces which are detachably connected to the middle part of the bottom plate and a plurality of cylinder compacting pieces which are detachably connected to the two ends of the bottom plate; wherein, the sample to be tested is arranged on the plurality of cylindrical supporting pieces and is compressed by the plurality of cylindrical compressing pieces. The utility model has small volume and convenient assembly and disassembly, can be used for recovering various indentations under compressive stress, can accelerate the repair rate of radial cracks of high-temperature indentations under compressive stress, and overcomes the problem of singleness of the existing test method for the radial crack healing of the indentations.

Description

Multi-point bending glass material high-temperature indentation radial crack repairing testing device

Technical Field

The utility model relates to a crack repair testing device in the field of macroscopic morphology, in particular to a multi-point bending glass material high-temperature indentation radial crack repair testing device.

Background

The multipoint bent glass material high-temperature indentation radial crack repairing test is a macroscopic morphology research technology for carrying out indentation crack testing on a sample under the micron scale and monitoring the macroscopic morphology of the glass material under the stress state through a high-temperature annealing furnace. The realization of the technology can deeply study the macrocrack healing mechanism of the material surface and subsurface and the correlation rule of the stress effect and the material performance. At present, the high-temperature indentation radial crack repairing test of the glass material bent at multiple points is still in a sprouting stage and is mainly limited by a test instrument and a test sample, external stress is difficult to apply, and meanwhile, the high-temperature indentation radial crack repairing test requirement of the glass material is still expanding continuously.

In the field of high-temperature crack healing research, parameters such as ambient humidity, temperature, external compressive stress and the like are the most main test objects of a glass material in a high-temperature crack healing test, and as the external compressive stress is excessively difficult to apply during high-temperature heating in the experimental process, the appearance change of cracks under the compressive stress and the influence of the compressive stress on crack appearance restoration cannot be observed. The device for repairing and testing the radial cracks of the high-temperature pressure marks of the multi-point bent glass material can reflect the crack morphology parameters of the glass material in a stress state when the glass material is in a high-temperature state aiming at the physical property influence.

The existing indentation radial crack repairing and testing device for compressive stress has the problems of complex structure, huge volume, high equipment cost and small application scene. In order to meet the requirements of the test of repairing the radial cracks of the indentations of the glass material and promote the deep and development of research, the utility model has a great need for a device which has small volume, simple structure and high precision and can be used for the test of repairing the radial cracks of the indentations.

The utility model patent with the patent application number of CN201210215908.5 provides a glass four-point bending clamp, which realizes loading of a sample through a pressure sensor, but cannot be applied to a high-temperature scene due to complex structure and large volume, and is not suitable for indentation radial crack repair test.

Disclosure of Invention

It is an object of the present utility model to address at least the above problems and/or disadvantages and to provide at least the advantages described below.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, a multi-point bent glass material high temperature indentation radial crack repair test apparatus is provided, comprising a base plate; a sample fixing member connected to the base plate; the tested sample fixing component comprises a plurality of cylinder supporting pieces which are detachably connected to the middle part of the bottom plate and a plurality of cylinder compacting pieces which are detachably connected to the two ends of the bottom plate; wherein, the sample to be tested is arranged on the plurality of cylindrical supporting pieces and is compressed by the plurality of cylindrical compressing pieces.

Preferably, the bottom plate is provided with a plurality of fixing through holes, the two ends of the cylinder of the plurality of cylinder supporting pieces are provided with first threaded holes, and the plurality of cylinder supporting pieces penetrate through the fixing through holes through set screws and are in threaded connection with the first threaded holes to be fixed on the bottom plate.

Preferably, a plurality of second threaded holes are formed in the bottom plate, through holes are formed in two ends of the cylinder of the plurality of cylinder compacting pieces, and the plurality of cylinder compacting pieces penetrate through the through holes through countersunk screws and are in threaded connection with the second threaded holes to be fixed on the bottom plate.

Preferably, the hole depth of the first threaded hole is 1/2 of the diameter of the bottom surface of the cylindrical support.

Preferably, the plurality of cylindrical supporting members and the cylindrical pressing member are insulating columns.

Preferably, the width of the bottom plate is 40mm, the length is 60mm, and the height is 10mm.

The utility model at least comprises the following beneficial effects:

according to the utility model, the tested sample is fixed by using the cylindrical pressing piece and the cylindrical supporting piece, secondary positioning is not needed in the test, the loading and unloading operation is simple and convenient, the test efficiency is high, and the defects of complex clamping, poor compatibility and the like of the conventional glass material high-temperature indentation radial crack repairing test equipment are overcome.

The utility model has small volume, can observe the crack morphology more conveniently under an optical microscope and a white light three-dimensional profiler, can be put into an annealing furnace to carry out high-temperature experiments, accelerates the repair rate of the radial crack of the high-temperature indentation under the compression stress, and solves the technical problem that the conventional equipment can not carry out the repair test of the radial crack of the indentation of the glass material under the high-temperature state.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present utility model;

FIG. 2 is a top view of the present utility model;

FIG. 3 is a cross-sectional view of a cylindrical compression member;

FIG. 4 is a cross-sectional view of a cylindrical support;

the marks in the figure: 1. the test sample comprises a tested sample body, 2, a cylindrical pressing piece, 3, countersunk screws, 4, a cylindrical supporting piece, 5, set screws, 6, a bottom plate, 7, through holes, 8, a first threaded hole, 9, a fixed through hole and a second threaded hole 10.

Detailed Description

The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that, in the description of the present utility model, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected through an intermediate medium, may be communication between two members, and may be understood in a specific manner by those skilled in the art.

Furthermore, in the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first and second features, or an indirect contact of the first and second features through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The novel experimental model is described in detail below with reference to the accompanying drawings:

the novel embodiment of the experiment shown in fig. 1-4 provides a device for repairing and testing the radial cracks of high-temperature pressure marks of a multi-point bent glass material, which comprises a bottom plate 6; a sample fixing member connected to the base plate 6; the tested sample fixing part comprises a plurality of cylinder supporting pieces 4 which are detachably connected to the middle part of the bottom plate 6 and a plurality of cylinder compacting pieces 2 which are detachably connected to the two ends of the bottom plate 6; wherein the test sample 1 is placed on a plurality of cylindrical supports 4 and is compressed by a plurality of cylindrical compressing members 2.

Working principle:

in the experiment, the cylindrical supporting piece 4 and the cylindrical pressing piece 2 provide multipoint contact conditions for the tested sample 1 in the middle of the cylindrical supporting piece, and the cylindrical pressing piece 2 above the tested sample 1 and the cylindrical supporting piece 4 below the tested sample can respectively transmit and buffer loading force, so that stress relaxation is reduced; the cylindrical fixed part of the tested sample is adopted, so that the contact surface of the fixed part and the tested sample 1 is a straight line, and compared with the fixed parts with other shapes, the multi-point bending effect can be better realized; only at bottom plate 6 mid-mounting cylinder support piece 4, the cooperation bottom plate 6 both ends cylinder compresses tightly piece 2 and carries out the clamping to the sample 1 that is tested, can realize three-point bending stress experimental conditions.

In the above technical scheme, a plurality of fixed through holes 9 have been seted up on the bottom plate, first screw hole 8 has been seted up on many cylinder supports 4 cylinder both ends, many cylinder supports 4 pass fixed through hole 9 and first screw hole 8 threaded connection through holding screw 5 and be fixed in on the bottom plate 6. By adopting the technical method, the set screw 5 is matched with the first threaded hole 8 and the bottom plate 6, so that the limit of the cylindrical support 4 can be realized, and the cylindrical support 4 is prevented from sliding under the stress condition.

In the above technical scheme, a plurality of second threaded holes 10 are formed in the bottom plate, through holes 7 are formed in two ends of the column body of the plurality of column pressing pieces 2, and the plurality of column pressing pieces 2 are fixedly connected to the bottom plate 6 through countersunk screws 3 penetrating through the through holes 7 and the second threaded holes 10 in a threaded mode. By adopting the technical method, the countersunk head screw 3 can enable the screw head to be partially sunk into the through hole 7, the locking force of the cylindrical pressing piece 2 is enhanced, the appearance of the through hole 7 is smooth, and the cylindrical pressing piece 2 can be continuously screwed into the bottom plate 6 along with the countersunk head screw 3 to load the tested sample 1; the countersunk head screw 3 is not only a connecting piece between the cylindrical pressing piece 2 and the bottom plate 6, but also a part for applying stress to the tested sample 1; the cylindrical pressing piece 2 can slide up and down freely by adopting a through hole design, and cannot rotate along with the screwing of the countersunk head screw 3.

In the technical scheme, the hole depth of the first threaded hole 8 is 1/2 of the diameter of the bottom surface of the cylindrical support 4; by adopting the non-penetrating first threaded hole design, the set screw 5 can be screwed to be fastened, so that the set screw 5 is prevented from sliding when stress is applied, and is directly contacted with the tested sample 1, the multipoint contact condition is destroyed, and the experimental effect is prevented from being influenced;

in the above technical scheme, the plurality of cylinder support pieces are arranged in parallel, and the plurality of cylinder compacting pieces are arranged in parallel. By adopting the technical method, the middle part of the tested sample 1 can be uniformly stressed to form an effective support,

in the above technical scheme, the plurality of cylindrical supporting members 4 and the cylindrical pressing member 2 are all insulation columns. By adopting the technical method, the interference of static electricity to experimental data can be avoided.

In the above technical scheme, the width of the bottom plate 6 is 40mm, the length is 60mm, and the height is 10mm. By adopting the technical method, the utility model has small enough volume and can be put into an annealing furnace for high-temperature experiments.

The above is merely illustrative of a preferred embodiment, but is not limited thereto. In practicing the present utility model, appropriate substitutions and/or modifications may be made according to the needs of the user.

The number of equipment and the scale of processing described herein are intended to simplify the description of the present utility model. Applications, modifications and variations of the present utility model will be readily apparent to those skilled in the art.

Although embodiments of the utility model have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present utility model. Additional modifications will readily occur to those skilled in the art. Therefore, the utility model is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A device for repairing and testing radial cracks of high-temperature pressure marks of a multipoint bent glass material comprises a bottom plate;

a sample fixing member connected to the base plate;

the device is characterized in that the tested sample fixing part comprises a plurality of cylinder supporting parts which are detachably connected to the middle part of the bottom plate and a plurality of cylinder compacting parts which are detachably connected to the two ends of the bottom plate; wherein, the sample to be tested is arranged on the plurality of cylindrical supporting pieces and is compressed by the plurality of cylindrical compressing pieces.

2. The device for repairing radial cracks of high-temperature pressure marks of a multi-point bent glass material according to claim 1, wherein a plurality of fixing through holes are formed in the bottom plate, first threaded holes are formed in two ends of the cylinder of the plurality of cylinder supporting pieces, and the plurality of cylinder supporting pieces are fixedly arranged on the bottom plate through the fixing through holes and the first threaded holes in a threaded connection mode through set screws.

3. The device for repairing radial cracks of high-temperature pressure marks of a multi-point bent glass material according to claim 1, wherein a plurality of second threaded holes are formed in the bottom plate, through holes are formed in two ends of the cylinder of the plurality of cylinder pressing pieces, and the plurality of cylinder pressing pieces are fixedly connected with the second threaded holes in a threaded manner through countersunk screws penetrating through the through holes.

4. The device for repairing radial cracks of high-temperature scratches of a multi-point bent glass material according to claim 2, wherein the hole depth of the first threaded hole is 1/2 of the diameter of the bottom surface of the cylindrical support.

5. The device for repairing radial cracks of high-temperature scratches of a multi-point bent glass material according to claim 1, wherein the plurality of cylindrical supports are arranged in parallel, and the plurality of cylindrical pressing members are arranged in parallel.

6. The device for repairing radial cracks of high-temperature scratches of a multi-point bent glass material according to claim 1, wherein the plurality of cylindrical supports and the cylindrical pressing member are insulating columns.

7. The device for repairing radial cracks of high-temperature scratches of a multi-point bent glass material according to claim 1, wherein the width of the bottom plate is 40mm, the length is 60mm, and the height is 10mm.