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http://dx.doi.org/10.14775/ksmpe.2022.21.06.050

A Study on the Influence of the Inclined Angle and Depth of the Substrate on Thermal and Residual Stress Characteristics in the Vicinity of the Repaired Region by a Directed Energy Deposition Process  

Kim, Dan-A (School of Mechanical Engineering, Chosun UNIV.)
Lee, Kwang-Kyu (School of Mechanical Engineering, Chosun UNIV.)
Ahn, Dong-Gyu (School of Mechanical Engineering, Chosun UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.21, no.6, 2022 , pp. 50-59 More about this Journal
Abstract
The design of the substrate significantly affects the thermal history and the residual stress formation in the vicinity of a repaired region by a directed energy deposition (DED) process. The occurrence of defects in the repaired region depends on the thermal history and residual stress formation. The objective of this study was to investigate the influence of the inclined angle and depth of the substrate on the thermal and residual stress characteristics in the vicinity of a repaired region by a DED process through two-dimensional finite element analyses (FEAs). The temperature and residual stress distributions in the vicinity of the repaired region were predicted according to the combination of the inclined angle and depth of the substrate. The effects of the inclined angle and depth on the depth of the heat affected zone and the maximum value of the residual stress were examined. A proper combination of the inclined angle and depth of the substrate was estimated to decrease the residual stress in the vicinity of the repaired region.
Keywords
Directed Energy Deposition Process; Inclined Angle; Depth; Thermal Characteristics; Residual Stress Characteristics;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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