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Shape-memory alloy material fatigue performance test system in electricity-thermal coupling field

A fatigue performance testing, memory alloy technology, applied in the direction of analyzing materials, measuring devices, strength characteristics, etc., can solve problems such as increasing production costs, unfavorable system stability, etc., to achieve the effect of compensating for unity

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

This will not only greatly increase the production cost, but also be detrimental to the long-term stability of the system

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  • Shape-memory alloy material fatigue performance test system in electricity-thermal coupling field

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Embodiment Construction

[0027] In the following, the present invention will be described in detail with reference to the accompanying drawings, so that the functional fatigue performance test system of the shape memory alloy material of the present invention under the electric-thermal coupling field can be more clearly understood.

[0028] Such as figure 1 As shown, the shape memory alloy material fatigue performance test system in the electric-thermal coupling field is used for the functional fatigue performance test of the shape memory alloy material in the electric-thermal coupling field, including power supply system, photography system, temperature acquisition system, and control system and detection platform; the power supply system is composed of a power supply 4 and a loop connecting wires; the photographic system includes a photographic box 6 with a viewfinder 7, an illumination source 8, an industrial camera 10 and a camera tripod 11; the temperature acquisition system includes a temperature...

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Abstract

The invention discloses a shape-memory alloy material fatigue performance test system in the electricity-thermal coupling field. The test system comprises a power supply system, a camera system, a temperature acquisition system and a control system; the camera system comprises a camera box with a viewfinder frame, a lighting source, an industrial camera and a camera tripod; the temperature acquisition system comprises a temperature thermocouple and a temperature acquisition card; the control system comprises a time relay and a computer; the shape-memory alloy material is subjected to current loading through the power supply; conduction time of a tested sample and a cooling fan are controlled independently through the time relay. By the arrangement, replacement of the related shape-memory alloy material under the action of current and joule thermal coupling and monitoring of the temperature can be realized, displacement and temperature data of the previous or a plurality of mark points of the monitored sample can be acquired, and the test system is suitable of fatigue performance test of the characterized shape-memory alloy material under the electricity-thermal coupling field.

Description

technical field [0001] The invention relates to the field of mechanical performance testing of functional materials and precision driving of intelligent materials, in particular to testing of functional fatigue performance, service reliability, and microstructure evolution process evaluation of a shape memory alloy material under the coupling action of current and Joule heat system. Background technique [0002] After proper "training", shape memory alloy materials can undergo reversible macroscopic deformation accompanying the phase transition process in the process of heating and cooling without external force intervention, and thus are widely used as smart materials in aerospace, mechanical Engineering, biomedicine and other fields. This reversible macroscopic deformation of the shape memory alloy material originates from the internal stress field of the material, which can be caused by dislocations generated inside the material during the "training" process, or by dislo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/06
CPCG01N3/066G01N3/068G01N2203/0073G01N2203/0617G01N2203/0647
Inventor 张新平李媛媛马骁曹姗姗曾才有李望云
Owner SOUTH CHINA UNIV OF TECH
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