Original Article
  • Transient Response of Functionally Graded Piezoelectric Ceramic with Crack
  • Jeong-Woo Shin, Tae-Uk Kim, Sung-Chan Kim
  • 균열이 있는 기능경사 압전 세라믹의 충격 특성에 관한 연구
  • 신정우(한국항공우주연구원), 김태욱(한국항공우주연구원), 김성찬(한국항공우주연구원)
Abstract
Using the theory of linear piezoelectricity, the dynamic response of a central crack in a functionally graded piezoelectric ceramic under anti-plane shear impact is analyzed. We assume that the properties of the functionally graded piezoelectric material vary continuously along the thickness. By using the Laplace and Fourier transform, the problem is reduced to two pairs of dual integral equations and then into Fredholm integral equations of the second kind. Numerical values on the dynamic stress intensity factors are presented to show the dependence of the gradient of material properties and electric loading.

Using the theory of linear piezoelectricity, the dynamic response of a central crack in a functionally graded piezoelectric ceramic under anti-plane shear impact is analyzed. We assume that the properties of the functionally graded piezoelectric material vary continuously along the thickness. By using the Laplace and Fourier transform, the problem is reduced to two pairs of dual integral equations and then into Fredholm integral equations of the second kind. Numerical values on the dynamic stress intensity factors are presented to show the dependence of the gradient of material properties and electric loading.

Keywords: piezoelectric ceramic, crack, functionally graded material, dynamic stress intensity factor

Keywords: 압전세라믹, 균열, 기능경사재료, 동응력세기계수

This Article

  • 2003; 16(5): 21-27

    Published on Oct 31, 2003