Novel instrument for characterizing comprehensive physical properties under multi-mechanical loads and multi-physical field coupling conditions.
Novel instrument for characterizing comprehensive physical properties under multi-mechanical loads and multi-physical field coupling conditions.
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DOI：
10.1063/1.5009152
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发表时间：
2018-02
期刊：
影响因子：
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通讯作者：
Changyi Liu;Hongwei Zhao;Zhichao Ma;Y. Qiao;Kun Hong;Zhuang Ren;Jianhai Zhang;Y. Pei;L. Ren
中科院分区：
文献类型：
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作者：
Changyi Liu;Hongwei Zhao;Zhichao Ma;Y. Qiao;Kun Hong;Zhuang Ren;Jianhai Zhang;Y. Pei;L. Ren
以铁磁和铁电为代表的功能材料由于其在复杂载荷和外部物理场耦合作用下的特殊特性，在先进传感器和精密驱动领域得到了广泛应用。然而，传统的材料表征装置只能提供有限类型的载荷和物理场，无法模拟材料的实际使用条件。为了克服这一障碍，实现复杂工况下的综合物性测量，设计并实现了一种多场耦合表征仪器。测试形式包括机械载荷中的拉伸、压缩、弯曲、扭转和疲劳，以及不同的外部物理场，包括电场、磁场和热场。为了提供各种信息来揭示机械损伤或变形形式，在微尺度上的一系列测量方法集成到包括压痕单元和原位显微成像模块的仪器中。最后，进行了几个耦合实验，涵盖了仪器的所有加载和测量功能。结果表明，该仪器的功能和特点，并揭示了耦合条件下压电换能器陶瓷、TbDyFe合金和碳纤维增强聚合物的力学和电磁性能的变化。
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 characteristics of the instrument and then reveal the variety in mechanical and electromagnetic properties of the piezoelectric transducer ceramic, TbDyFe alloy, and carbon fiber reinforced polymer under coupling conditions.