Measuring device and method for large magnetostrictive material
A technology of magnetostrictive materials and measuring devices, applied in magnetostrictive performance measurement, magnetic performance measurement, etc., to solve the problem of pressurization and improve the measurement range
Pending Publication Date: 2018-11-20
NAT INST OF METROLOGY CHINA
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The resistance strain gauge is attached to the surface of the sample to be tested, and only the local performance of the attached part of the sample can be measured
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0033] figure 2 It is a structural schematic diagram of a measuring device for magnetostrictive materials according to the first embodiment of the present invention.
[0034] Such as figure 2 As shown, it includes a yoke 1, an upper pole 2, a lower pole 3, an upper pole 4, a lower pole 5, a first pressure rod 6 and a second pressure rod 7; the upper pole 2 and the lower pole 3 are respectively It is installed to fit ...
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The invention relates to a measuring device and method for a large magnetostrictive material. The measuring device comprises a yoke, an upper pole, a lower pole, an upper polar head, a lower polar head, a first pressure rod and a second pressure rod, wherein the upper pole and the lower pole are disposed on opposite sides in the yoke, the upper polar head and the lower polar head are disposed on opposite surfaces of the upper pole and the lower pole, the first pressure rod and the second pressure rod are arranged in parallel, one end of the first pressure rod and one end of the second pressurerod are connected through a connecting rod, the other ends pass through the yoke and the upper pole in sequence, the connecting rod is connected with a cylinder, and the first pressure rod and the second pressure rod are driven by the cylinder to move up and down. The measuring device is advantaged in that the measuring device is reproducible, can meet stress requirements in the measurement process, further does not affect uniformity of the magnetic field and achieves measurement under different stresses.
Description
technical field [0001] The invention relates to the field of magnetic material measurement, in particular to a measurement device and method for large magnetostrictive materials. Background technique [0002] Large magnetostrictive materials have high magnetic-mechanical coupling characteristics, can efficiently realize the conversion of magnetic energy into mechanical energy, and have the advantages of high conversion rate, high energy density, fast response speed, and good reliability. Large magnetostrictive materials have been widely used in the fields of acoustics, displacement control, high-energy micro-dynamic devices, mechanical sensing, and magnetism. Terbium dysprosium iron (Tb x Dy 1-x Fe 2 ) as a representative of a series of giant magnetostrictive materials have been commercialized and widely used in sonar transducers, sensors, robots and other fields. [0003] The application of large magnetostrictive materials in high-tech and cutting-edge technology fields...
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IPC IPC(8): G01R33/18
CPCG01R33/18
Inventor 侯瑞芬林安利贺建张志高龚文杰许志一
Owner NAT INST OF METROLOGY CHINA