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Keywords: permittivity
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Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Appl. Mech. July 2012, 79(4): 044507.
Published Online: May 11, 2012
...K. Y. Volokh Permittivity of electroactive elastomers alters during deformation. The influence of the permittivity alterations on the electrostriction of elastomers is studied in the present work. Particularly, acrylic elastomer VHB 4910 is considered. A polarization–electric field constitutive...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2009, 76(1): 011004.
Published Online: October 31, 2008
... found by means of the extrapolation method. In addition, a crack parallel to the poling direction in a four-point bend specimen subjected to both an applied load and an electric field was analyzed and different electric permittivity values in the crack gap were assumed. It is seen that the electric...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011010.
Published Online: January 11, 2008
...Q. Li; Y. H. Chen A semi-permeable interface crack in infinite elastic dielectric/piezoelectric bimaterials under combined electric and mechanical loading is studied by using the Stroh complex variable theory. Attention is focused on the influence induced from the permittivity of the medium inside...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. September 2007, 74(5): 833–844.
Published Online: September 27, 2006
...Q. Li; Y. H. Chen A semi-permeable interface crack in dissimilar piezoelectric materials is studied in detail. Attention is focused on the influence induced from the permittivity of the medium inside the crack gap on the near-tip singularity and the crack tip energy release rate (ERR). The Stroh...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. September 2007, 74(5): 852–860.
Published Online: July 13, 2006
...Chun-Ron Chiang; George J. Weng By means of the Hankel transform and dual-integral equations, the nonlinear response of a penny-shaped dielectric crack with a permittivity κ 0 in a transversely isotropic piezoelectric ceramic is solved under the applied tensile stress σ z A and electric...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 2006, 73(2): 220–227.
Published Online: June 1, 2005
... field inside the crack are determined, and the results are in exact agreement with those in the literature if the two constituents of the bimaterial media are identical. The effects from mechanical and electro-magnetic property mismatches, such as differences in the stiffness, electric permittivity...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. January 2005, 72(1): 35–43.
Published Online: February 1, 2005
... direction. (a) a closed-circuit condition, with the electric potential forced to remain zero (grounded), and Material properties ( ε 0 = 8.85   10 − 12   farad / m , electric permittivity of air) Property 1 (PVDF) 2 (PZT-4) 3 (PZT-4) 4 (Gr/epoxy) 5...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. November 2004, 71(6): 866–878.
Published Online: January 27, 2005
... front and field intensity factors are determined. Numerical results for a cracked PZT-5H ceramic are evaluated to examine the influence of the dielectric permittivity of the crack interior on the field intensity factors, indicating that the electric boundary conditions at the crack surfaces play...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. July 2002, 69(4): 481–488.
Published Online: June 20, 2002
... . 30 May 2001 21 November 2001 20 06 2002 functionally graded materials piezoelectricity crack-edge stress field analysis Fourier transforms permittivity Fredholm integral equations fracture mechanics Since the Curie brothers announced their pioneering discovery...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. July 2002, 69(4): 521–526.
Published Online: June 20, 2002
...T.-H. Hao In this paper, the displacement boundary value problem of a piezoelectric material plane with an elliptic hole is studied. As the permittivity of the medium in the hole is far less than that of the piezoelectric material, the electric induction of the medium is negligible. An exact...