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On-line observable high-temperature three-point bend test system

A three-point bending and experimental system technology, applied in the field of high-temperature three-point bending experimental system, can solve the problems of inability to observe and record

Inactive Publication Date: 2014-04-16
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, when the bending test is performed on the material in such a closed condition, it is impossible to observe and record changes such as cracks on the material surface during the online process

Method used

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  • On-line observable high-temperature three-point bend test system

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Embodiment Construction

[0012] The specific structure, working process and implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0013] figure 1 It is a schematic diagram of the structure principle of a high-temperature three-point bending experimental system for online observation. The experimental system includes a three-point bending load application device, a high-temperature heating furnace, a deflection measuring device, a temperature measuring device and an online observation device; The application device comprises a tensile testing machine 1 and a ceramic fixture; the ceramic fixture is installed in a high-temperature heating furnace 3, and consists of an upper pressing rod 2, a lower supporting rod 13, an upper pressing head 4, a first lower supporting head 7a and a second lower supporting head 7b, the ceramic fixture is made of 99 ceramic materials. The deflection measuring device includes a displacement sensor 10 and...

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Abstract

An on-line observable high-temperature three-point bend test system belongs to the technical field of engineering materials, structural deformation and mechanical experiments. The test system comprises a three-point bend load applying device, a high-temperature heating furnace, a deflection measurement device, a temperature measurement device and an on-line observation device. The invention relates to the high-temperature three-point bend test device integrating the on-line real-time observation function, and the surface of a test piece for the three-point bend test device in the high-temperature heating furnace is observed on line by a high-precision industrial camera with filters; the changes of microcosmic morphology, changes of crystal phase and crack propagation on the surface of the test piece in the three-point bend test process are recorded, so as to provide on-line observable test support for studying the deformation and crack of materials at high temperature.

Description

technical field [0001] The invention relates to a high-temperature three-point bending experiment system for online observation, and belongs to the technical fields of engineering materials, structural deformation and mechanical experiments. Background technique [0002] Among the many research methods of material properties, bending test is an important method to characterize the mechanical properties of brittle materials and some low plastic materials. The bending test is mainly used in two aspects, one is to obtain the bending modulus and bending strength of the material by loading and recording the corresponding load deflection curve, and to investigate the bending performance of the material; the other is to prefabricate a cut on the material and During the process, observe and record the characteristic quantity of the crack, and then use the relevant theory of fracture mechanics to analyze the crack growth process, calculate the fracture parameters related to the fract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N3/06
Inventor 冯雪方旭飞
Owner TSINGHUA UNIV
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