Current-carrying friction micro-area surface force-heat-electric load distribution test system and method

Abstract

The invention relates to a current-carrying friction microcell surface force-heat-electric load distribution test system and method, and the system comprises two fixing devices which are respectively used for fixing one of two samples of a friction pair; at least one driving device which is used for driving at least one fixing device to move in at least one direction; an electrical load loading device which is used for loading an electrical load between the two samples; an exciting coil which is used for applying an alternating magnetic field to an area where at least one sample is located; an eddy current sensor array which is composed of a plurality of eddy current sensors and used for detecting response generated by the alternating magnetic field in the friction contact process; and a signal processing part which is used for decoupling the signals detected by the eddy current sensor to form pressure information and temperature information of each micro-area on the contact surface. According to the invention, real-time observation of the contact state of the conductor friction pair surface micro-area can be realized.

Description

technical field [0001] The invention relates to a testing system and method for force-heat-electric load distribution on the surface of a current-carrying friction micro-zone. Background technique [0002] In many industrial fields, materials are coupled with each other (kinematic) contact, electrical conduction, thermal conduction, etc., making it difficult to evaluate various properties of materials. [0003] For example, in the pure mechanical contact system, the fatigue process of the components can be estimated relatively accurately, but in the case of high speed, heavy load, complex load spectrum, high and low temperature environment, the estimation of the fatigue process is different from that of the simple mechanical contact. Big deviation. If it is still estimated according to the pure mechanical contact model, the design of many key components will not meet expectations. [0004] For another example, for the force-electric contact system, the force-electric coupl...

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Problems solved by technology

[0007] However, due to the invisibility of the interface contact area and the transient nature of the contact state, there is still a lack of technical means to evaluate the mechanical-thermal-electrical contact performance under the condition of material motion, especially for the mechanical-thermal-electrical micro-area contact. The analysis method of behavior is still blank in the world

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