Test sample and tensile fixture for thermal simulation testing machine

Abstract

The invention discloses a test sample and a tensile fixture for a thermal simulation testing machine, and relates to the technical field of material dynamic mechanics experiments. The test sample for the thermal simulation testing machine comprises a parallel section and clamping transition sections fixed to the two ends, the outer wall of the parallel section is used for fixing a temperature measuring element, and the temperature is measured through the temperature measuring element; the tensile fixture for the thermal simulation testing machine comprises two clamping pieces, the two clamping pieces are used for being electrically connected with a positive electrode and a negative electrode of the thermal simulation testing machine correspondingly, the two clamping transition sections are clamped under the action of a testing end of the thermal simulation testing machine, and the parallel section is stretched; each clamping piece comprises a clamping cavity and a temperature equalizing cavity, the inner walls of the clamping cavities can be attached to the outer wall of the clamping transition sections, the parallel section is located in the temperature equalizing cavities, the end, close to the parallel section, of each clamping transition section extends into the corresponding temperature equalizing cavity, and the two clamping pieces do not make contact with each other. According to the test sample and the tensile fixture for the thermal simulation testing machine, the heating uniformity of the test sample can be improved, and the effectiveness of a test result is ensured.

Description

technical field [0001] The invention relates to the technical field of material dynamic mechanics experiments, in particular to a test sample and a tensile fixture for a thermal simulation testing machine. Background technique [0002] With the advancement of science and technology, various industries have higher and higher requirements for the performance of materials. Gleeble thermal simulation testing machine provides technical support for the study of static and dynamic mechanical properties of materials in high temperature environments. The heating method of Gleeble thermal simulation testing machine is resistance heating, the current flows through the sample through the sample holder, and the heat generated by the sample itself forms a high temperature environment. [0003] The traditional rod-shaped tensile sample is screwed to the clamp, and the connection method leads to insufficient contact between the sample and the clamp, and unstable current conduction, which is...

AI Technical Summary

Problems solved by technology

[0003] The traditional rod-shaped tensile sample is screwed to the clamp, and the connection method leads to insufficient contact between the sample and the clamp, and unstable current conduction, which is prone to problems such as uneven heating of the sample and excessive local temperature of the clamp; for For materials with poor toughness or high strength, thread processing is more difficult, and the introduction of threads is easy to induce crack initiation, causing the sample to break and fail from the thread during the test process, invalidating the test results

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