Melt Pool Size Extraction Method in Laser Directed Energy Deposition Based on Edge Gradient Search

被引：0

作者：

Miao L. ^{[1
,2
]}

Xing F. ^{[1
,2
]}

Shi J. ^{[2
]}

Chai Y. ^{[1
]}

Yan C. ^{[1
]}

Bian H. ^{[1
]}

Sun H. ^{[1
]}

机构：

[1] College of Mechanical Engineering, Shenyang University of Technology, Shenyang

[2] Nanjing Zhongke Raycham Laser Technology Co., Ltd., Nanjing

来源：

Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 02期

关键词：

edge extraction; edge gradient search; ellipse fitting; laser directed energy deposition;

D O I：

10.11896/cldb.22070278

中图分类号：

学科分类号：

摘要：

Aiming at the problem of being difficult in melt pool width extraction in laser directed energy deposition due to the interference of weak edges, a method for extracting the edge based on edge gradient search was presented based on the difference of gray gradient change of melt pool edge. In order to extract accurate melt pool edge size. First, the melt pool roughly edge was obtained by preprocessing the melt pool image based on mathematical morphology. Then the weak edge gradient threshold was determined through experiments. Finally, the edge gradient search model was adopted to further segmentation the melt pool roughly edge to obtain the precise segmentation edge, and the ellipse fitting method was used to fit the edge of fine segmentation to obtain the weld pool width. Experiment results indicate that the melt pool width can be detected accurately. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

共 25 条

[1] Song W, Cheng Y H, Tantai F L, Et al., Applied Laser, 41, 1, (2021)
[2] Chan Y F, Cheng C J, Zhang M., Materials Reports, 33, 17, (2019)
[3] Hou S X, Zhao J K, Li Q, Et al., Materials Reports, 36, (2022)
[4] Zheng L, Zhang Q, Cao H, Et al., Materials and Design, 183, (2019)
[5] Liu Y J, Deng N, Song B X, Et al., Mechanical Science and Technology for Aerospace Engineering, 34, 11, (2015)
[6] Jeon I, Yang L, Ryu K, Et al., Additive Manufacturing, 47, (2021)
[7] Colodron P, Farina J, Rodriguez-Andina J, Et al., IEEE International Symposium on Industrial Electronics, (2011)
[8] Colodron P, Farina J, Rodriguez-Andina J, Et al., IECON 2011-37th Annual Conference of the IEEE Industrial Electronics Society, (2011)
[9] Sun Z, Guo W, Li L., Optics and Laser Technology, 129, (2020)
[10] Goossens L R, Van Hooreweder B., Additive Manufacturing, 40, (2021)

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