Multi-sample continuous testing device for breaking tenacity of materials in liquid helium temperature region
A fracture toughness and testing device technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of large consumption of liquid helium, high testing cost, low efficiency, etc., to achieve low consumption of liquid helium, use The effect of high efficiency and high degree of intelligence
Inactive Publication Date: 2014-06-11
SOUTHWESTERN INST OF PHYSICS
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Problems solved by technology
[0005] The technical problem to be solved in the present invention is: the existing liquid helium temperature zone material fracture toughness test device can only test a single sample at one time, the efficiency is low, the consumption of liquid helium is large, and the test cost is high
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[0023] The multi-sample continuous testing device for fracture toughness of materials in the liquid helium temperature zone of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.
[0024] Such as figure 1 As shown, the multi-sample continuous testing device for fracture toughness of materials in the liquid helium temperature zone of the present invention includes: an electro-hydraulic servo fatigue testing machine 1, a rigid support 2, a multi-sample automatic sample changing mechanism 3, a computer control system 4, and a low-temperature Dewar 6. The liquid is injected into the output pipe 7 and the liquid helium level gauge 8 .
[0025] The electro-hydraulic servo fatigue testing machine 1 includes: a cross beam, a rigid base and an actuator 9 . The cross beam and the rigid base are connected by two rigid columns to form the rigid frame of the electro-hydraulic servo fatigue testing machine 1; the actuator 9 ru...
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The invention belongs to the technical field of mechanical properties of materials and particularly relates to a multi-sample continuous testing device for breaking tenacity of materials in a liquid helium temperature region. The device comprises an electro-hydraulic servo fatigue testing machine, a rigid support, a multi-sample automatic sample replacing mechanism, a computer control system, a low-temperature dewar, a liquid injection output pipeline, and a liquid helium liquid level meter. With the adoption of the device, the technical problems of an existing testing device for the breaking tenacity of the materials in the liquid helium temperature region that one-time sampling feeding only can test a single sample and the consumed amount of liquid helium is great are solved. The device is matched with the computer control system by the multi-sample automatic sample replacing mechanism so as to realize multi-sample automatic sample replacing; the plurality of samples can be continuously tested by one-time sample feeding and the breaking tenacity data test can be continuously carried out so that the utilization efficiency is high, the use amount of the liquid helium is high, the use amount of the liquid helium is saved and the testing cost can be greatly reduced; the system is stable and accurate to operate, is high in intelligent degree and is reliable in structure.
Description
technical field [0001] The invention belongs to the technical field of material mechanical performance testing, and in particular relates to a multi-sample continuous testing device for fracture toughness of materials in a liquid helium temperature zone. Background technique [0002] With the development of my country's controlled nuclear fusion, aerospace, superconducting technology and other fields, there are more and more engineering projects involving materials serving in extremely low temperature environments, among which superconducting technology is the core technology in the field of nuclear fusion engineering in the future One, the demand for cryogenic materials is increasing. At the same time, for metal materials that have been used in large quantities, it is necessary to test their low-temperature performance and improve the material performance database to expand their application range. [0003] Fracture toughness is a toughness parameter for materials to resist...
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IPC IPC(8): G01N3/18
Inventor 韩石磊李鹏远侯炳林廖敏杨淑娟康道安孙振超罗蓉蓉陈辉
Owner SOUTHWESTERN INST OF PHYSICS