Theoretical and Experimental Investigation of the Inelasti- city and Failure of Ceramics

研究非弹性变形和破坏 陶瓷在理论和实验相结合的调查。 这项研究将解决更好地了解发展， 微裂纹结构和相应的刚度降低 材料. 本构方程将发展的演变 由于微裂纹的萌生、生长和聚结而造成的损坏。 次 微秒持续时间的平面波实验将进行验证 理论模型。 冲击陶瓷样本将 在撞击后回收并进行了检查， 微裂纹 提高对微裂纹发展的认识 陶瓷和随后对刚度的影响将适用于 陶瓷中的各种强度/刚度问题。

Research will be conducted into the inelastic deformation and failure of ceramics in a combined theoretical and experimental investigation. The research will address improved understanding of the development of microcrack structures and corresponding reduction in stiffness of materials. Constitutive equations will be developed for the evolution of damage due to microcrack initiation, growth, and coalescence. Sub- microsecond duration plane-wave experiments will be conducted to verify the theoretical models. The impacted ceramics specimens will be recovered and examined after impact to characterize the development of microcracks. An improved understanding of microcrack development in ceramics and the subsequent effect on stiffness will be applicable to a wide variety of strength/stiffness problems in ceramics.