Novel instrument for characterizing comprehensive physical properties under multi-mechanical loads and multi-physical field coupling conditions

The Review of Scientific Instruments
Changyi LiuLuquan Ren

Abstract

Functional materials represented by ferromagnetics and ferroelectrics are widely used in advanced sensor and precision actuation due to their special characterization under coupling interactions of complex loads and external physical fields. However, the conventional devices for material characterization can only provide a limited type of loads and physical fields and cannot simulate the actual service conditions of materials. A multi-field coupling instrument for characterization has been designed and implemented to overcome this barrier and measure the comprehensive physical properties under complex service conditions. The testing forms include tension, compression, bending, torsion, and fatigue in mechanical loads, as well as different external physical fields, including electric, magnetic, and thermal fields. In order to offer a variety of information to reveal mechanical damage or deformation forms, a series of measurement methods at the microscale are integrated with the instrument including an indentation unit and in situ microimaging module. Finally, several coupling experiments which cover all the loading and measurement functions of the instrument have been implemented. The results illustrate the functions and charact...Continue Reading

References

May 8, 2009·Nature Nanotechnology·Roman NowakMarkus Pessa
May 29, 2012·Nature Materials·Jian LiuOliver Gutfleisch
Dec 3, 2015·The Review of Scientific Instruments·Nickolaus M BrunoYuriy I Chumlyakov

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