NDLI: Closed-loop automatic feedback control in electron beam melting

Content Provider	Springer Nature Link
Author	Mireles, Jorge Terrazas, Cesar Gaytan, Sara M. Roberson, David A. Wicker, Ryan B.
Copyright Year	2015
Abstract	An infrared (IR) camera has been installed in an additive manufacturing Arcam A2 electron beam melting (EBM) system for improved layer-by-layer monitoring and feedback control of the EBM build process. Previous research demonstrated that temperature variations present during an EBM build (e.g., part/powder bed temperature elevates as build height increases) produce microstructural differences leading to variations in mechanical properties. Currently, the EBM system allows for process parameter modification (beam current, beam speed, beam focus, heating time) during fabrication. Modification of processing parameters can help achieve full spatial and temporal control of temperature that could lead to controlled microstructural architectures in EBM-fabricated parts. Furthermore, an automatic feedback control loop can help produce desired mechanical properties with limited user intervention. In this research, an automatic feedback control system was developed to acquire data used to create a temperature matrix of the part/powder bed surface, record information from each layer, and use the recorded information as an input to a software interface. Upon analysis of input data, the software interface communicated with Arcam’s EBM interface to change necessary parameters automatically on-demand. Results show successful manipulation of grain size in Ti-6Al-4V microstructure that ultimately can lead to three-dimensional control of microstructural architectures.
Starting Page	1193
Ending Page	1199
Page Count	7
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	78
Issue Number	5-8
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2015-01-07
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Closed-loop automatic feedback control Microstructure control Electron beam melting Ti-6Al-4V Infrared Additive manufacturing Industrial and Production Engineering Production/Logistics/Supply Chain Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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