3641 熱衝撃による球状介在物中に生ずる動的相変態ひずみによる応力焦点化現象(S24-1 熱衝撃・熱弾性,S24 数理・数値解析による先端材料評価)

概要

論文の詳細を見る
The elastodynamic response of the transformation-toughened ceramics under an instantaneous phase transformation by the thermal impact is investigated. Some composite materials, such as Zirconia toughened ceramics, are remarkable material, which has a high strength, a high elastic modulus, and an improved toughness, etc. Most of the good qualities are common in many ceramic composite materials. These good qualities are made possible through the phase transformation of composite particles. The transformation toughening utilizes the stress-induced phase transformation of particles, which is accompanied by a volumetric expansion. In this paper a phenomenological model is proposed to describe the situation, which involves a dynamic phase transformation in a spherical particle embedded in the infinite elastic matrix.
2006-09-15