Test specimen hydraulic bulging test method and device

A technology of hydraulic bulge and test method, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., which can solve the problems that the reliability of the test cannot be effectively guaranteed, and the real force of the sample cannot be accurately reflected, so as to achieve the The power situation is simple, the reliability is guaranteed, and the effect of improving reliability

Inactive Publication Date: 2015-02-11
CHINA SPECIAL EQUIP INSPECTION & RES INST
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AI Technical Summary

Problems solved by technology

[0007] The invention provides a sample hydraulic bulging test method and device to solve the problems that the existing sample adopts a small punch test method, cannot accurately reflect the real force of the sample, and the reliability of the test cannot be effectively guaranteed

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  • Test specimen hydraulic bulging test method and device

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Embodiment Construction

[0035] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0036] Such as figure 1 with figure 2 As shown, the present invention proposes a sample hydraulic swelling test device for clamping and testing sample 3, the sample 3 is, for example, in the shape of a disc, and the sample hydraulic swelling test device includes:

[0037] Base 1;

[0038] The hydraulic chamber 6 is arranged in the base 1;

[0039] A sample installation groove (not marked in the figure) is set on the base 1 and connected to the top of the hydraulic chamber 6 to accommodate the sample 3;

[0040] The gland 4 is set on the top of the sample installation groove and pressed against the sample 3 for pressing the edge of the sample 3; the gland is ring-shaped with a through hole in the middle for placing Displacement conducting part 8;

[0041] The clamping nut 2 ...

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Abstract

The invention provides a test specimen hydraulic bulging test method and device. The test specimen hydraulic bulging test device comprises a hydraulic cavity, a test specimen installing groove, a press cover, a clamping screw nut, a displacement conduction component and an industrial camera, wherein the hydraulic cavity is arranged in a base, the press cover is arranged on the top of the test specimen installing groove and is abutted against a test specimen, the clamping screw nut is connected with the top of the base through screw threads and tightly presses the press cover, the displacement conduction component is arranged on the test specimen and sequentially penetrates out from the press cover and the clamping screw nut, and the industrial camera obtains the displacement value of the displacement conduction component. The test specimen hydraulic bulging test method comprises the following steps that hydraulic oil is introduced into the hydraulic cavity, and the test specimen bulges and deforms under the effect of the pressure of the hydraulic oil until the test specimen cracks; the industrial camera is used for obtaining the displacement value of the displacement conducting component, and in addition, the received pressure value of the test specimen is synchronously recorded. The test result can be used for more accurately reflecting the real stress of the test specimen.

Description

Technical field [0001] The invention relates to the technical field of micro-sample testing, in particular to a sample hydraulic swelling test method and device, which are used for structural testing of nuclear facilities, power stations, petrochemical equipment and other equipment. Background technique [0002] As nuclear facilities, power plants and petrochemical equipment are highly dangerous facilities, some of the structural designs of these facilities are designed based on conservative principles. At the end of the 1970s, the operating time of nuclear power plants in some countries was about to reach the designed life span, and people were faced with the choice of stopping or continuing to operate. Therefore, the mechanical properties of the in-service equipment structure must be tested. Since these materials have been operating under conditions such as high temperature or radiation for a long time, after a period of service, it is necessary to determine whether the proper...

Claims

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Application Information

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IPC IPC(8): G01N3/12
Inventor 寿比南徐彤王汉奎张雪涛孙超
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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