Closed-loop control of alternating dual-electron beams for molten pool regulation during in-situ additive manufacturing

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成果类型：

期刊论文

作者：

Li, Zixiang;Chang, Baohua;Wang, Kaiming;Zhang, Haoyu;Liang, Zhiyue;...

通讯作者：

Du, D

作者机构：

[Zhang, Haoyu; Liang, Zhiyue; Wang, Li; Chang, Baohua; Du, Dong; Li, Zixiang; Du, D] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China.

[Wang, Kaiming] Changsha Univ Sci & Technol, Coll Automot & Mech Engn, Changsha 410114, Peoples R China.

[Liu, Changmeng] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China.

[Du, Dong] Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R China.

通讯机构：

[Du, D ] T

Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China.

语种：

英文

关键词：

In-situ additive manufacturing;Alternating dual-electron beam freeform fabrication;Vision sensing;Closed-loop control;Molten pool regulation

期刊：

Journal of Materials Processing Technology

ISSN：

0924-0136

年：

2023

卷：

319

DOI：

10.1016/j.jmatprotec.2023.118087

基金类别：

Beijing Municipal Natural Science Foundation [3222008]; National Natural Science Foundation of China [51875309]

机构署名：

本校为其他机构

院系归属：

汽车与机械工程学院

摘要：

In-situ additive manufacturing (AM) is well known for integrating of material synthesis and near-shaping fabrication. However, the insufficient metallurgy has become a widespread challenge owing to the molten pool's short lifetime. Our previous research proved that employing alternating dual-electron beams can effectively manipulate the molten pool length, thereby prolonging its duration time. However, it is difficult for the preset alternating dual-heat source parameters under current open-loop operations to guarantee the desired molten pool length for the time-variation of the AM process. Th...

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Closed-loop control of alternating dual-electron beams for molten pool regulation during in-situ additive manufacturing

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