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Unconfined compressive strength test sample positioning system

A technology of compressive strength and positioning system, applied in the direction of strength characteristics, using stable tension/pressure test material strength, measuring devices, etc., can solve the problem of poor repeatability of test results and affect the test results of unconfined compressive strength test Issues of accuracy, erroneous conclusions, etc.

Pending Publication Date: 2020-01-31
CENT SOUTH UNIV
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Problems solved by technology

[0004] In the above experiment, because the position of the sample 4 is manually positioned, the positioning is highly accidental, resulting in the inaccurate positioning between the pressure rod 2 and the sample 4, which leads to a large chance of the test results and increases the error of the test results. It affects the accuracy of the test results of the unconfined compressive strength test, making the repeatability of the test results poor, and even drawing wrong conclusions, which poses potential risks to engineering application guidance

Method used

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  • Unconfined compressive strength test sample positioning system
  • Unconfined compressive strength test sample positioning system
  • Unconfined compressive strength test sample positioning system

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Embodiment Construction

[0032] In the present invention, unless stated otherwise, the orientation or positional relationship indicated by the orientation words "upper and lower" is based on the actual use state of the unconfined compressive strength test specimen positioning system of the present invention The orientation or positional relationship below.

[0033] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or a Integral connection; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0034] The following ...

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Abstract

The invention relates to a compressive strength test device, and discloses an unconfined compressive strength test sample positioning system. The system comprises a base (1), a pressing rod (2), a sample position detection device and a controller (6); the pressing rod (2) and the base (1) are arranged opposite to each other, and the pressing rod (2) can move towards the base (1) so as to apply pressure to a test sample (4) between the base (1) and the pressing rod (2) and detect a pressure value; the sample position detection device is arranged at the periphery of the pressing rod (2) so as todetect the relative positions of the sample (4) and the pressing rod (2); and the controller (6) is electrically connected with the sample position detection device so as to process and output the position information of the sample (4). The positioning system is accurate in positioning, accurate in test result and high in repeatability.

Description

technical field [0001] The invention relates to a compressive strength test device, and in particular discloses a sample positioning system for an unconfined compressive strength test. Background technique [0002] The unconfined compressive strength test is to apply axial pressure to the sample without restricting the side of the sample to test the ultimate strength of the sample against axial pressure. The unconfined compressive strength of the sample is a theoretical test value. In actual tests, the test value of the unconfined compressive strength of the sample is usually affected by the relative position of the compression rod and the sample. When the relative position of the compression rod and the compression surface of the sample deviates during the test, The measured experimental values ​​are often quite different. [0003] Current testing machines for unconfined compressive strength testing typically do not have automatic specimen positioning systems. Its usual ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04G01N3/02G01B11/00
CPCG01N3/08G01N3/04G01N3/02G01B11/00G01N2203/0019G01N2203/0641
Inventor 李地元杜少华阮波朱泉企
Owner CENT SOUTH UNIV
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