Electromechanical cracking in ferroelectrics driven by large scale domain switching |
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| Authors: | CUI YuanQing & YANG Wei School of Aerospace Engineering Applied Mechanics Tongji University Shanghai China University Office Zhejiang University Hangzhou |
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| Affiliation: | CUI YuanQing1 & YANG Wei2* 1 School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China,2 University Office,Zhejiang University,Hangzhou 310058 |
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| Abstract: | ![]()
Experimental results indicate three regimes for cracking in a ferroelectric double cantilever beam (DCB) under combined electromechanical loading. In the loading, the maximum amplitude of the applied electric field reaches almost twice the coercive field of ferroelectrics. Thus, the model of small scale domain switching is not applicable any more, which is dictated only by the singular term of the crack tip field. In the DCB test, a large or global scale domain switching takes place instead, which is driven... |
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| Keywords: | ferroelectric ceramics large scale domain switching electromechanical loading crack initiation crack growth stability stress intensity factor transverse stress |
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