Three-dimensional validation of crack curvature in muscovite mica.

Hill, J. C. ; Foulk, J. W. ; Klein, P. A. ; Chen, E. P.

Technical Information Center Oak Ridge Tennessee

关键词: Mica;    Muscovite;    Fractures;    Three-dimensional calculations;    Fracture mechanics;   

RP-ID  :  DE2001772350

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Experimental and computational efforts focused on characterizing crack tip curvature in muscovite mica. Wedge-driven cracks were propagated under monochromatic light. Micrographs verified the subtle curvature of the crack front near the free surface. A cohesive approach was employed to model mixed-mode fracture in a three-dimensional framework. Finite element calculations captured the crack curvature observed in experiment.