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

Авторы
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
Журнал
Nuclear Materials and Energy
Издательство
Elsevier Ltd
Язык
Английский
Статус
Опубликовано
Ссылка
Внешняя ссылка
DOI
10.1016/J.NME.2019.100677
Номер
100677
Том
20
Год
2019
Организации
  • 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
Ключевые слова
Cracking; Elasticity; Electron beam; Profilometry; Pulsed heat load; Theoretical simulation; Tungsten
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