Biologically-Inspired Multifunctional Composite Panel with Integrated Thermal Control

Williams, Andrew D.; Underwood, R. Lee; Arritt, Brandon; Busch, Gregory T.; Taft, Brenton

doi:10.2514/6.2010-2934

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…The first mode shape shows a twisting of each panel, indicating they are least stiff Table 1 Material properties used in FEM analysis. 7 in torsion. The first natural frequencies at which this mode shape will occur were similar: 704 Hz for the conventional panel and 777 Hz for the multi-functional panel.…”

Section: Resultsmentioning

confidence: 97%

Structural Performance of a Grid-Stiffened Panel with Integrated Thermal Control

Busch¹,

Doane²,

Williams³

et al. 2012

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials ConferenceSelf Cite

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This paper presents the structural modeling of a multi-functional thermal/structural panel. The panel, inspired by the circulatory system of biological organisms, integrates cooling channels into a rib-stiffened structure while maintaining the stiffness-to-mass ratio of the original panel.A finite-element model of the multi-functional panel was constructed and compared with an analogous model of a more-conventional iso-grid panel geometry without integrated fluid channels. The first three natural frequency modes of each panel was computed. For the panels considered, the first mode of the panel utilizing a conventional is-grid structure was 704 Hz while the first mode of the multi-functional panel was 777 Hz. The mass of the two panels were within 2% of each other. These results suggest that the method in which fluid channels were integrated did not adversely affect the stiffness-to-mass ratio of the panel.

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Section: Resultsmentioning
confidence: 97%

Structural Performance of a Grid-Stiffened Panel with Integrated Thermal Control
Busch¹,
Doane²,
Williams³
et al. 2012
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials ConferenceSelf Cite
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“…Regarding the inclusion of microchannels into structural composites, most efforts have been solely experimental and have considered adaptive, multifunctional [9,10], and biologically inspired [11] concepts. The topic received even greater interest after researchers began to investigate selfhealing composites enabled by distributed networks of microvascular channels [12][13][14].…”

Section: Introductionmentioning
confidence: 99%

A liquid metal-based structurally embedded vascular antenna: I. Concept and multiphysical modeling
Hartl
¹
,
Frank
²
,
Huff
³

et al. 2016
Smart Mater. Struct.
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This work proposes a new concept for a reconfigurable structurally embedded vascular antenna (SEVA). The work builds on ongoing research of structurally embedded microvascular systems in laminated structures for thermal transport and self-healing and on studies of non-toxic liquid metals for reconfigurable electronics. In the example design, liquid metal-filled channels in a laminated composite act as radiating elements for a high-power planar zig-zag wire log periodic dipole antenna. Flow of liquid metal through the channels is used to limit the temperature of the composite in which the antenna is embedded. A multiphysics engineering model of the transmitting antenna is formulated that couples the electromagnetic, fluid, thermal, and mechanical responses. In part 1 of this two-part work, it is shown that the liquid metal antenna is highly reconfigurable in terms of its electromagnetic response and that dissipated thermal energy generated during high power operation can be offset by the action of circulating or cyclically replacing the liquid metal such that heat is continuously removed from the system. In fact, the SEVA can potentially outperform traditional copper-based antennas in high-power operational configurations. The coupled engineering model is implemented in an automated framework and a design of experiment study is performed to quantify first-order design trade-offs in this multifunctional structure. More rigorous design optimization is addressed in part 2.

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“…Lyall (2008) examined a stiffened composite panel for satellite electronics systems, containing fluidic microchannels for cooling [9]. This study was developed by Williams (2010) to include structural and thermal analysis [10]. Kozola (2010) explored the use of composite material for a fin with an internal vascular network using water or oil as the coolant.…”

Section: Introductionmentioning
confidence: 99%

Optimisation of an air film cooled CFRP panel with an embedded vascular network
McElroy
¹
,
Lawrie
²
,
Bond
³

2015
International Journal of Heat and Mass Transfer
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The increasing use in the aerospace industry of strong, lightweight composite materials in primary structural components promises to substantially reduce aircraft non-pay-load weight, improving fuel consumption and operating profitability. This study explores the extension of composite material to regions of gas turbine engines previously considered too hot for composites with moderate melting points. Throughout the majority of a gas turbine cycle, gas stream temperatures exceed the polymer composite glass transition by a considerable margin. Boundary layer cooling strategies, however, may be adopted in the compression stages to extend the downstream distance that can be constructed using lightweight composites. This paper presents formulation and validation of a numerical model and its use in an optimisation study to develop a systematic process for thermal design of polymer composite structures in 'warm' gas streams. Internal vascular and external boundary layer film cooling strategies are considered.

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Biologically-Inspired Multifunctional Composite Panel with Integrated Thermal Control

Cited by 7 publications

References 2 publications

Structural Performance of a Grid-Stiffened Panel with Integrated Thermal Control

Structural Performance of a Grid-Stiffened Panel with Integrated Thermal Control

A liquid metal-based structurally embedded vascular antenna: I. Concept and multiphysical modeling

Optimisation of an air film cooled CFRP panel with an embedded vascular network

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