TY - JOUR
T1 - Experimental and computational study of damage behavior of tungsten under high energy electron beam irradiation
AU - Li, Muyuan
AU - Sommerer, Mathias
AU - Werner, Ewald
AU - Lampenscherf, Stefan
AU - Steinkopff, Thorsten
AU - Wolfrum, Philipp
AU - You, Jeong Ha
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - 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 0.5. 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.
AB - 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 0.5. 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.
KW - Electron beam irradiation tests
KW - Extended finite element method
KW - J-integral
KW - Thermal shock
UR - http://www.scopus.com/inward/record.url?scp=84922373625&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2015.01.017
DO - 10.1016/j.engfracmech.2015.01.017
M3 - Article
AN - SCOPUS:84922373625
SN - 0013-7944
VL - 135
SP - 64
EP - 80
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
ER -