Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7169757 | Engineering Fracture Mechanics | 2015 | 17 Pages |
Abstract
In this work, damage behavior of tungsten under high heat flux loads was investigated both numerically and experimentally assuming a single heat pulse with duration of 0.5Â s. Finite element simulations revealed that the thermal steady state was reached within several milliseconds after the onset of a heat flux pulse and tensile residual stress was produced during cooling providing the driving force for crack growth. The crack initiation and growth simulations and J-integral calculation at crack tips delivered consistent results on cracking mechanism. Electron beam irradiation tests on tungsten samples were performed, which confirmed the predicted damage behavior.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Muyuan Li, Mathias Sommerer, Ewald Werner, Stefan Lampenscherf, Thorsten Steinkopff, Philipp Wolfrum, Jeong-Ha You,