On the mechanism of surface-parallel cracks formation under pulsed heat loads

This paper presents a model for calculating deformations and mechanical stresses around a crack normal to surface that appeared under pulsed heat load. The model was applied to calculation of stresses that may lead to formation of cracks along the surface, which are observed when tungsten is exposed to ITER-relevant heat load. It was found that such stresses might be not negligibly small in comparison with the ultimate tensile strength, and thus the appearance of cracks normal to the surface may leads to development of cracks parallel to the surface. The calculated deformation of the region around a crack is in good agreement with the experimental data. The deformations calculated can be a basis for experimental detection of formation of cracks normal and parallel to the surface. © 2019

Authors
Arakcheev A.S.1, 2, 3 , Arakcheev S.A.4 , Kandaurov I.V.1 , Kasatov A.A.1, 2 , Kurkuchekov V.V.1, 2 , Lazareva G.G. 1, 5, 6 , Maksimova A.G.1, 2, 5 , Mashukov V.I.5 , Popov V.A. 1, 2 , Trunev Y.A.1, 2 , Vasilyev A.A.1, 2 , Vyacheslavov L.N.1, 2
Journal
Nuclear Materials and Energy
Publisher
Elsevier Ltd
Language
English
Status
Published
Link
External link
DOI
10.1016/j.nme.2019.100677
Number
100677
Volume
20
Year
2019
Organizations
  • 1 Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation
  • 2 Novosibirsk State University, Novosibirsk, Russian Federation
  • 3 Novosibirsk State Technical University, Novosibirsk, Russian Federation
  • 4 Siberian Transport University, Novosibirsk, Russian Federation
  • 5 Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russian Federation
  • 6 The Peoples’ Friendship University of Russia, Moscow, Russian Federation
Keywords
Cracking; Elasticity; Electron beam; Profilometry; Pulsed heat load; Theoretical simulation; Tungsten
Date of creation
19.07.2019
Date of change
03.03.2021
Short link
https://repository.rudn.ru/en/records/article/record/38551/
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