Anisotropic elastic constants of lotus-type porous copper: Measurements and micromechanics modeling

Tetsu Ichitsubo, Masakazu Tane, Hirotsugu Ogi, Masahiko Hirao, Teruyuki Ikeda, Hideo Nakajima

研究成果: Article査読

68 被引用数 (Scopus)

抄録

We studied the elastic constants of a lotus-type porous copper, regarding it as a composite material showing hexagonal elastic symmetry with the c-axis along the longitudinal direction of the pores. We used the combination of resonance ultrasound spectroscopy and electromagnetic acoustic resonance methods to determine the elastic constants of the composite. The resulting Young's modulus E decreases linearly and c33 does slowly with porosity, while E and c11 drop rapidly and then slowly. Micromechanics calculations considering the elastic anisotropy of the copper matrix can reproduce the measured anisotropic elastic constants. This indicates that the elastic properties of various types of porous metals can be predicted and designed with the present approach using micromechanics modeling.

本文言語English
ページ(範囲)4105-4115
ページ数11
ジャーナルActa Materialia
50
16
DOI
出版ステータスPublished - 2002 9月 20
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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