Fracture behavior of an interface crack in a magnetoelectric sandwich structure under electric field: Effects of the poling directions
Source abstract
Abstract
Magnetoelectric (ME) sandwich structure is a common form in device applications. Poling directions of component materials are essential for the improvement of ME device properties. In this paper, the effects of the electric and magnetic poling directions on the interface fracture of a ME sandwich structure are investigated by integral transform and singular integral equation techniques. The expressions of the normalized stress intensity factors (NSIFs) are derived, and some numerical examples are presented. It is found that the poling direction of active layer can greatly affect the interface cracking mode. And the crack propagation can be promoted or impeded by adjusting the applied field. The structure with a larger volume fraction of active material will be more likely to crack.
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Research context
OpenAlex topics: Numerical methods in engineering · Ultrasonics and Acoustic Wave Propagation · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Department of Engineering Mechanics, Hebei Key Laboratory for Mechanics of Intelligent Materials and Structures, Shijiazhuang Tiedao University, Shijiazhuang, PR China
State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, PR China
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