Experimental and computational study of damage behavior of tungsten under high energy electron beam irradiation

•Fracture mechanical behavior of tungsten under thermal shock loads was modeled.•Thermal shock test was performed using electron beam for experimental verification.•XFEM and J-integral method delivered consistent results on cracking mechanism.•The predicted damage behavior agrees well with the exper...

Full description

Saved in:
Bibliographic Details
Published in:Engineering fracture mechanics 2015-02, Vol.135, p.64-80
Main Authors: Li, Muyuan, Sommerer, Mathias, Werner, Ewald, Lampenscherf, Stefan, Steinkopff, Thorsten, Wolfrum, Philipp, You, Jeong-Ha
Format: Article
Language:English
Subjects:
Computer simulation
Damage
Electron beam irradiation tests
Electron beams
Extended finite element method
Fracture mechanics
Heat flux
Irradiation
J-integral
Mathematical analysis
Thermal shock
Tungsten
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Fracture mechanical behavior of tungsten under thermal shock loads was modeled.•Thermal shock test was performed using electron beam for experimental verification.•XFEM and J-integral method delivered consistent results on cracking mechanism.•The predicted damage behavior agrees well with the experimental observation. 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 0.5s. 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.
ISSN:0013-7944
1873-7315
DOI:10.1016/j.engfracmech.2015.01.017