Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing

Bibliographic Details
Main Author:	Evans, Rachel Elizabeth
Language:	English
Published:	Wright State University / OhioLINK 2020
Subjects:	Mechanical Engineering additive manufacturing laser powder bed fusion thermal modeling multi-beam additive manufacturing
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=wright1588784900451923

id	ndltd-OhioLink-oai-etd.ohiolink.edu-wright1588784900451923
record_format	oai_dc
spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-wright15887849004519232021-08-03T07:14:50Z Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing Evans, Rachel Elizabeth Mechanical Engineering additive manufacturing laser powder bed fusion thermal modeling multi-beam additive manufacturing In additive manufacturing (AM), it is necessary to know the influence of processing parameters in order to have better control over the microstructure and mechanical performance of the part. Laser powder bed fusion (LPBF) is a metal AM process in which thin layers of powdered material are selectively melted to create a three-dimensional structure. This manufacturing process is beneficial for many reasons; however, it is limited by the thermal solidification conditions achievable in the available processing parameter ranges for single-beam processing methods. Therefore, this work investigates the effect of multiple, coordinated heat sources, which are used to strategically modify the melting and solidifying in the AM process. The addition of multiple heat sources has the potential to provide better control of the thermal conditions, thus providing better control of the microstructure of the additively manufactured parts. To model this, existing thermal models of the LPBF process have been modified to predict the thermal effects of multiple coordinated laser beams. These computational models are used to calculate melt pool dimensions and thermal conditions throughout the LPBF process. Furthermore, the results of the simulations are used to determine the influence of the distance between the coordinated laser beams. The predictive method used in this research provides insight into the effects of using multiple coordinated beams in LPBF, which is a necessary step in increasing the capabilities of the AM process. 2020-05-22 English text Wright State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=wright1588784900451923 http://rave.ohiolink.edu/etdc/view?acc_num=wright1588784900451923 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Mechanical Engineering additive manufacturing laser powder bed fusion thermal modeling multi-beam additive manufacturing
spellingShingle	Mechanical Engineering additive manufacturing laser powder bed fusion thermal modeling multi-beam additive manufacturing Evans, Rachel Elizabeth Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
author	Evans, Rachel Elizabeth
author_facet	Evans, Rachel Elizabeth
author_sort	Evans, Rachel Elizabeth
title	Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
title_short	Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
title_full	Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
title_fullStr	Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
title_full_unstemmed	Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing
title_sort	thermal modeling of coordinated multi-beam additive manufacturing
publisher	Wright State University / OhioLINK
publishDate	2020
url	http://rave.ohiolink.edu/etdc/view?acc_num=wright1588784900451923
work_keys_str_mv	AT evansrachelelizabeth thermalmodelingofcoordinatedmultibeamadditivemanufacturing
_version_	1719457302836150272

Thermal Modeling of Coordinated Multi-Beam Additive Manufacturing

Similar Items