多场耦合MSP测试系统的建立及应用

通过建立一套能够实现在力场、电场、温场等多场耦合条件下测试的小样品力学性能测试系统,使得小样品在近真实的多场耦合条件下得到评价:在小样品力学性能测试系统的基础上,通过设计模具和引入电场,实现了力电耦合下的小样品的动态力学性能的测试;通过设计模具和高温炉引入温场,可以对热障涂层、陶瓷等材料进行高温条件下的力学性能测试。通过引入声发射仪和模具设计,在测试材料力学性能的同时,可以实时监控材料内部结构发生的变化。多场耦合MSP测试系统的建立,为新型无机材料在多场耦合下的力学性能研究提供了系统的测试平台,为材料使用的可靠性和稳定性研究奠定了基础。

Establishment and Application of the MSP Test under Multi-Field Coupling

The mechanical properties testing equipment for small specimens, to achieve the mechanical properties testing under the mechanical, electrical and mechanical-electrical coupling field was set up. On the basis of dynamic materials testing machine, by design and configuration AC-DC power supply, acoustic emission equipment, etc, we developed mechanical properties testing equipment for small specimens, to achieve the mechanical properties testing under the mechanical, electrical and mechanical-electrical coupling field, and real-time monitoring for material damage and failure process. Through the design of the mold and the acquisition of the AC-DC power supply, the system can test the mechanical properties of piezoelectric ceramics under electromechanical coupling field. Through the design of the mold and the acquisition of high-temperature furnace temperature field, the system can test the mechanical properties of thermal barrier coatings and refractory ceramics. Through the design of the mold and the acquisition of acoustic emission, the system can monitor the changes in internal structures of material during the test of the mechanical properties. The establishment of the system provides a full appraisal system of testing the mechanical properties of piezoelectric ceramics and Structural Ceramics under Multi-field coupling field. The establishment of the system is useful for the reliability and stability of the material.