Title

Effects of Interface and Tensile Properties in the Dynamic Fracture of Layered Structures

Abstract

Finite element modeling of crack extension under impact was performed to study the suitability of layered composite structures in plasma-facing and primary wall structures for ITER and other fusion devices. The layers may consist of dissimilar metal alloys, each of which performs a necessary design function for sputtering resistance, heat removal, and structural integrity. Several layered structures with varying material properties were modelled using finite element analysis. Compared to monolithic solid bars with the same mechanical properties, layered structures with frictional interfaces dissipate more energy before a pre-crack normal to the interface can propagate. For these layered structures, there is an optimum for the coefficient of friction that provides maximum resistance to crack extension.

Department(s)

Mining and Nuclear Engineering

Sponsor(s)

United States. Department of Education

Keywords and Phrases

F06; M03

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1999 Elsevier, All rights reserved.

Share

 
COinS