High-temperature in situ tension-fatigue test system and test method thereof

A fatigue test and in-situ stretching technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of inability to monitor microscopic deformation and damage, and achieve the effect of good scientific research application value, reliable principle and simple structure.

Active Publication Date: 2015-09-16
JILIN UNIV
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Problems solved by technology

[0004] At present, the existing high-temperature tensile equipment cannot perform tensile-fatigue composite load tests in high-temperature environments, and cannot fully monitor the microscopic deformation and damage of materials under load. Therefore, the development

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  • High-temperature in situ tension-fatigue test system and test method thereof
  • High-temperature in situ tension-fatigue test system and test method thereof
  • High-temperature in situ tension-fatigue test system and test method thereof

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Embodiment Construction

[0038] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0039] see Figure 1 to Figure 8 As shown, the high-temperature in-situ tensile-fatigue testing system of the present invention includes a tensile loading and detection unit, a fatigue loading and detection unit, an in-situ observation unit, a high-temperature loading and detection unit, etc., and the device is arranged horizontally, wherein the tensile loading The detection unit, fatigue loading and detection unit are respectively installed on both sides of the high temperature furnace, and the directions of tensile loading and fatigue loading are on the same axis. This test method realizes the uniaxial tensile-fatigue mechanical performance test of the material under the thermal field with adjustable temperature from 500°C to 1700°C, and realizes the whole process of microscopic deformation damage of the materia...

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Abstract

The invention relates to a high-temperature in situ tension-fatigue test system and a test method thereof, and belongs to the technical field of scientific instruments and material test. The test system comprises a tensile loading and detecting unit, a fatigue loading and detecting unit, an in situ observation unit, and a high temperature loading and detecting unit. The tensile loading and detecting unit is powered by a motor, and realizes quasi-static loading through worms, gears and a ball screw; a piezoelectric ceramic drives a flexible hinge to realize medium and low frequency reciprocating motion in the tensile axial direction of a test piece in order to realize fatigue loading; and an optical microscope dynamically monitors the test process in order to realize in situ observation. The test system has the advantages of reliable principle, important scientific meaning, good application values, and accurate test and analysis of the relationship among mechanical performances of a test piece material, the microstructure of the material and the deformation damage mechanism in high temperature environment.

Description

technical field [0001] The invention relates to the technical field of scientific instruments and material testing, in particular to a high-temperature in-situ tension-fatigue testing system and a testing method thereof. It is used to accurately detect the mechanical properties of the specimen in high temperature environment and the correlation law between its microstructure and deformation damage mechanism. Background technique [0002] The application of in-situ testing technology has played a role in promoting the development of materials science. In the process of material testing, the microscopic deformation and damage of materials under load are monitored dynamically through optical microscopes and other instruments, which can reveal various materials and their properties more deeply. The micro-mechanical behavior of its products, the damage mechanism and the correlation law between the material properties and the applied load. [0003] It is well known that the m...

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Application Information

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IPC IPC(8): G01N3/18
Inventor 赵宏伟刘阳张世忠刘彦超李柠时月金明骏马志超范尊强徐丽霞
Owner JILIN UNIV
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