Static and dynamic force-magnetic coupling material performance test instrument

Abstract

The invention relates to a static and dynamic force-magnetic coupling material performance test instrument, and belongs to the field of precision scientific instruments. The instrument comprises a force loading module, a magnetic field loading module, a Hall probe, a measuring coil, a strain gauge and the like. The force loading module applies the static and dynamic loads on a sample by utilizinga servo motor and a piezoelectric stack, the magnetic field loading module provides a static and dynamic magnetic field parallel or perpendicular to a load direction through a variable air gap electromagnet and a Helmholtz coil, and the important performance parameters and curves, including an elastic coefficient, a piezomagnetic coefficient, a hysteresis loop, a magnetostriction curve, a stress-strain curve and the like, of the material under different loads and bias magnetic fields can be obtained through a force-magnetic coupling test. The instrument has the advantages that the important physical properties of the material in a force-magnetic coupling environment can be tested, and the instrument is of great significance to the research of the constitutive relation of the magnetostrictive material.

Description

technical field [0001] The invention relates to the field of magnetostrictive material performance testing and precision scientific instruments, in particular to a static and dynamic force-magnetic coupling material performance testing instrument. It can apply two static loads of tension and compression and dynamic high-frequency compression load, and provide adjustable DC bias magnetic field and high-frequency alternating magnetic field at the same time to realize the magnetostrictive material under the load-magnetic field multi-physics field coupling environment Performance Testing. Background technique [0002] Magnetostrictive materials have complex nonlinear constitutive relations, so obtaining the nonlinear constitutive model of magnetostrictive materials under the force-magnetic coupling field is an important work in the study of magnetostrictive materials. A large number of tests have shown that the basic mechanical and magnetic properties of magnetostrictive materi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a static and dynamic force-magnetic coupling material performance testing instrument, which solves the problem that the prior art can only provide a static magnetic field environment, and cannot build a static and dynamic external load and a magnetic field coupling test environment, and cannot obtain its comprehensive Questions about mechanical and magnetic properties and characteristic curves

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