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

A.S. Arakcheev; S.A. Arakcheev; I.V. Kandaurov; A.A. Kasatov; V.V. Kurkuchekov; G.G. Lazareva; A.G. Maksimova; V.I. Mashukov; V.A. Popov; Yu.A. Trunev; A.A. Vasilyev; L.N. Vyacheslavov

Nuclear Materials and Energy (Aug 2019)

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

A.S. Arakcheev,
S.A. Arakcheev,
I.V. Kandaurov,
A.A. Kasatov,
V.V. Kurkuchekov,
G.G. Lazareva,
A.G. Maksimova,
V.I. Mashukov,
V.A. Popov,
Yu.A. Trunev,
A.A. Vasilyev,
L.N. Vyacheslavov

Affiliations

A.S. Arakcheev: Corresponding author at: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation.; Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation; Novosibirsk State Technical University, Novosibirsk, Russian Federation
S.A. Arakcheev: Siberian Transport University, Novosibirsk, Russian Federation
I.V. Kandaurov: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation
A.A. Kasatov: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
V.V. Kurkuchekov: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
G.G. Lazareva: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russian Federation; The Peoples’ Friendship University of Russia, Moscow, Russian Federation
A.G. Maksimova: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation; Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russian Federation
V.I. Mashukov: Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russian Federation
V.A. Popov: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
Yu.A. Trunev: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
A.A. Vasilyev: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
L.N. Vyacheslavov: Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation

Journal volume & issue: Vol. 20

Abstract

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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. Keywords: Pulsed heat load, Tungsten, Cracking, Theoretical simulation, Elasticity, Electron beam, Profilometry

Published in Nuclear Materials and Energy

ISSN: 2352-1791 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-materials-and-energy/

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