Heat Transfer in Additive Manufacturing of Glass

Abstract

The temperature in the molten region is a critical parameter for Additive Manufacturing (AM) of transparent glass using a laser heated filament-fed processing. This paper presents a study of the heat transfer in single track printing of borosilicate glass using the filament-fed process. The incandescent radiation emitted from the melt pool is monitored using a spectrometer. The spectral data indicates the breakdown of materials occurring inside of the glass, and reflects the occurrence of bubble formation due to reboil at high temperatures. A simple numerical model of the filament-fed process based on an energy balance within the melt pool is used to estimate the temperature. By combining the numerical and experimental results, the estimated temperature calculated from this model is suitable for control feedback.

Meeting Name

ASME 2017 Heat Transfer Summer Conference, HT2017 (2017: Jul. 9-12, Bellevue, WA)

Department(s)

Mechanical and Aerospace Engineering

Research Center/Lab(s)

Intelligent Systems Center

Comments

The authors gratefully acknowledge support from the National Science Foundation (CMMI-1301414 and EEC-1004839)

Keywords and Phrases

3D printers; Borosilicate glass; Industrial research; Manufacture; Thermodynamic properties; Transport properties; Control feedback; High temperature; Melt pool; Molten region; Process-based; Single-tracks; Spectral data; Transparent glass; Heat transfer

International Standard Book Number (ISBN)

978-0-7918-5789-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 American Society of Mechanical Engineers (ASME), All rights reserved.

Publication Date

01 Jul 2017

Link to Full Text

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