Detail Multiaxial Constitutive Behavior of Ferroelectric Materials   Oleh:  Lynch, Christopher S. ; Wei Chen Jenis: Article from Bulletin/Magazine Dalam koleksi: Journal of Engineering Materials and Technology vol. 123 no. 2 (2001), page 169-175. Topik: MATERIALS; multiaxial; constitutive behaviour; ferroelectric materials Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ87.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Multiaxial ferroelectric / ferroelastic constitutive laws governing the behaviour of ceramic lead zirconate titanate (PZT) are needed for numerical calculations of stress and electric field in the vicinity of field concentrators such as cracks, inhomogeneities, and partial electrodes. Multiaxial constitutive behaviour was measured using tubular specimens, both poled and unpoled. The specimens were subjected to simultaneous axial load, internal pressure, and external pressure. Deformation was measured using strain gages. The results were used to map out a "yield" (ferroelastic polarization reorientation threshold or switching) surface. The composition used, 8 / 65 / 35 PLZT, was found to obey a Tresca criterion when in the unpoled state. The switching surface was found to be a function of the polarization state. Kinematic and isotropic hardening appear to be good candidates for describing subsequent switching surfaces. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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