Simulation of Particle Interaction with Surface Microdefects during Cold Gas-Dynamic Spraying

  • The cold gas-dynamic spray (CGDS) technique is utilized for repairing processes of a large number of metallic components in mechanical and process engineering, such as bridges or vehicles. Fine particles impacting on the component surface can be severely deformed and penetrate into the defects, filling and coating them, resulting in possible protection against corrosion or crack propagation. This work focuses on the investigation of the impact behavior of cold sprayed particles with the wall surface having microdefects in the form of cavities. The collision of fine single particles with the substrate, both made from AISI 1045 steel, was simulated with the finite element method (FEM) using the Johnson–Cook failure model. The impact phenomena of particles on different microdefect geometries were obtained and compared with the collision on a smooth surface. The particle diameter and defect were varied to investigate the influence of the size on the deformation behaviour. The different impact scenarios result in different temperature and stress distributions in the contact zone, penetration and deformation behavior during the collision.

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Author:Olha Aleksieieva, Liliia DereviankinaORCiD, Paul Breuninger, Mustafa BozogluORCiD, Pavlo Tretiakov, Andrii Toporov, Sergiy AntonyukORCiD
Place of publication:Basel
Editor(s):Devis Bellucci BellucciORCiD
Document Type:Article
Language of publication:English
Publication Date:2022/09/03
Year of Publication:2022
Publishing Institute:Technische Universität Kaiserslautern
Date of the Publication (Server):2022/10/18
Tag:cold gas-dynamic spray; finite element method; microdefect; particle collision; surface protection
Issue:2022, 12(9), 1297
Number of page:18
Faculties / Organisational entities:Kaiserslautern - Fachbereich Maschinenbau und Verfahrenstechnik
DDC-Cassification:6 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften und Maschinenbau
Licence (German):Zweitveröffentlichung