کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1449154 | 988692 | 2009 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Frequency effects on fatigue crack growth and crack tip domain-switching behavior in a lead zirconate titanate ceramic
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Frequency effects on fatigue crack growth and crack tip domain-switching behavior in a lead zirconate titanate ceramic Frequency effects on fatigue crack growth and crack tip domain-switching behavior in a lead zirconate titanate ceramic](/preview/png/1449154.png)
چکیده انگلیسی
The microstructural origins of the effect of frequency on the electrical fatigue behavior of pre-cracked soft ferroelectric Pb(Zr0.48Ti0.52)O3 is investigated by means of a high spatial resolution hard X-ray synchrotron source. It is found that there is a strong link between the frequency of the applied bipolar field, domain-switching behavior in terms of ferroelastic reorientation of the domains around the crack tip and the resultant crack growth. The crack growth is accentuated under increased ferroelastic switching and, in particular, found to be more pronounced under low-frequency loading. The concept of domain wall viscoelasticity is applied to explain why lower frequencies accelerate crack growth under a bipolar electric field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 57, Issue 13, August 2009, Pages 3932–3940
Journal: Acta Materialia - Volume 57, Issue 13, August 2009, Pages 3932–3940
نویسندگان
Soodkhet Pojprapai, Jennifer Russell, Hou Man, Jacob L. Jones, John E. Daniels, Mark Hoffman,