Analysis-driven design of vascular antennas embedded in multifunctional composites

D. J. Hartl, G. J. Frank, G. H. Huff, J. W. Baur

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Research on structurally embedded microvascular systems in laminated structures continues to provide new insights into the areas of thermal transport and self-healing. At the same time, the number of studies considering uses of non-toxic liquid metal (LM) alloys for reconfigurable electronics is also increasing. This work benefits from these efforts and proposes a concept for a reconfigurable Structurally Embedded Vascular Antenna (SEVA). A set of fully coupled multi-physical engineering models of the driven antenna consider the electromagnetic, fluid, thermal, and mechanical responses. A full-wave electromagnetic model (frequency domain) is used to assess antenna Radio Frequency (RF) performance and compute dissipative heat generation (dielectric and resistive). The full field heat source data is then passed to a conjugate heat transfer model, which accounts for the thermal coupling between the solid composite and flowing fluid based on the LM pumping pressure. Finally, a representative volume element representing a local region of the highest temperature is used to compute mechanical knockdown ratios relative to a similar panel with no microvascular network. The entire modeling framework is implemented using a combination of COMSOL, Matlab, Abaqus FEA, and Python tools and libraries. It is shown that the increased resistive heating that results from the use of LM can be offset by the action of circulating the liquid metal such that heat is continuously removed from the system. A simulation process management framework is used to automate design of experiment (DOE) and multi-objective optimization studies. Because of the high computational cost associated with performing the multi-physical computational analysis, a surrogate model-based optimization approach is employed to explore the design space associated with this concept and to arrive at SEVA configurations that simultaneously maximize antenna effectiveness and structural strength.

Original languageEnglish (US)
Title of host publicationProceedings of the American Society for Composites - 31st Technical Conference, ASC 2016
EditorsBarry D. Davidson, Michael W. Czabaj, James G. Ratcliffe
PublisherDEStech Publications Inc.
ISBN (Electronic)9781605953168
StatePublished - 2016
Event31st Annual Technical Conference of the American Society for Composites, ASC 2016 - Williamsburg, United States
Duration: Sep 19 2016Sep 21 2016

Publication series

NameProceedings of the American Society for Composites - 31st Technical Conference, ASC 2016

Other

Other31st Annual Technical Conference of the American Society for Composites, ASC 2016
CountryUnited States
CityWilliamsburg
Period9/19/169/21/16

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Fingerprint Dive into the research topics of 'Analysis-driven design of vascular antennas embedded in multifunctional composites'. Together they form a unique fingerprint.

Cite this