Measurement device for strain characteristics of material under extreme conditions

Abstract

The invention discloses a measurement device for the strain characteristics of a material under extreme conditions. The measurement device comprises a microcomputer terminal, a TDS-150 data acquisition instrument, a temperature and magnetic change device as well as a Dewar sleeve, a low-temperature cavity body, a sample guide pipe, a Dewar cover, a superconducting coil, a sample table joint and a sample table which are arranged in the temperature and magnetic change device, wherein the microcomputer terminal is provided with a data acquisition and analysis system; the sample guide pipe is mounted in the low-temperature cavity in the temperature and magnetic change device, the superconducting coil is mounted at the periphery of the lower part of the sample guide pipe, a shield cable joint for transmitting a strain gage electrical signal is arranged at the top end of the sample guide pipe, a sample joint is arranged at the lower part of the sample guide pipe, a sample table mounting groove is formed in the lower end of the sample joint, and a sample table is mounted in the sample table mounting groove; a magnetic control circuit is mounted on the inner wall of the low-temperature cavity; a sample mounting region, an induction module and a connecting channel are arranged on the first layer of the sample table, a heating element and a thermocouple are arranged on the second layer of the sample table, pin holes are formed in the third layer of the sample table, strain gages are arranged in the strain gage induction module, and the induction wires of the strain gages are connected to a public end. According to the measurement device, the strain characteristics of the material are measured in a plurality of physical fields.

Description

technical field [0001] The invention relates to a measuring device for strain characteristics of materials under extreme conditions; a device for testing the strain characteristics of materials under multi-physics fields (such as low temperature and strong magnetic field). Background technique [0002] As we all know, in the research of experimental condensed matter physics and materials science, testing and researching the static strain characteristics of many materials such as metal materials, multifunctional alloys and composite materials, such as magnetostriction, thermostriction and other physical mechanisms, is an important part of material physics. An important means of basic research. Using this method can further determine the value of materials in practical engineering applications. However, in the actual static strain test of materials, it is usually necessary to measure the material under special conditions such as a given temperature and a given magnetic field....

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Problems solved by technology

However, the series of products reported by the above-mentioned companies do not include the measurement function of strain characteristics under multi-physics fields

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