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Evaluation of microwave characterization methods for additively manufactured materials

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journal contribution
posted on 01.10.2019, 08:58 by Chih-Kuo Lee, Jack McGhee, Christos Tsipogiannis, Shiyu Zhang, Darren Cadman, Athanasios GoulasAthanasios Goulas, Tom Whittaker, Reza Gheisari, Daniel EngstromDaniel Engstrom, J. C. Vardaxoglou, William WhittowWilliam Whittow
Additive manufacturing (AM) has become more important and common in recent years. Advantages of AM include the ability to rapidly design and fabricate samples much faster than traditional manufacturing processes and to create complex internal geometries. Materials are crucial components of microwave systems and proper and accurate measurement of their dielectric properties is important to aid a high level of accuracy in design. There are numerous measurement techniques and finding the most appropriate method is important and requires consideration of all different factors and limitations. One limitation of sample preparation is that the sample size needs to fit in the measurement method. By utilizing the advantage of additive manufacturing, the material can be characterized using different measurement methods. In this paper, the additive manufacturing process and dielectric measurement methods have been critically reviewed. The test specimens for measuring dielectric properties were fabricated using fused filament fabrication (FFF)-based additive manufacturing and were measured using four different commercial dielectric properties measurement instruments including split post dielectric resonator (SPDR), rectangular waveguide, TE01δ cavity resonator, and open resonator. The measured results from the four techniques have been compared and have shown reasonable agreement with measurements within a 10 percent range.

Funding

EP/N010493/1 (SYMETA)

EP/S030301/1 (ANISAT)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Designs

Volume

3

Issue

4

Publisher

MDPI AG

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

20/09/2019

Publication date

2019-09-25

Copyright date

2019

eISSN

2411-9660

Language

en

Depositor

Dr Will Whittow

Article number

47