Homogenized energy model for characterizing polarization and strains in hysteretic ferroelectric materials: Material properties and uniaxial model development

RC Smith, Z Hu - Journal of Intelligent Material Systems and …, 2012 - journals.sagepub.com
Ferroelectric materials, such as lead zirconate titanate, lanthanum-doped lead zirconate
titanate, and BaTiO3, are being considered, or are already being employed, for a large …

A modeling and uncertainty quantification framework for a flexible structure with macrofiber composite actuators operating in hysteretic regimes

Z Hu, RC Smith, N Burch, M Hays… - Journal of Intelligent …, 2014 - journals.sagepub.com
Macrofiber composites are low cost, durable, and flexible piezoceramic devices that are
presently being considered for applications that include shape control of airfoils for improved …

Boundary layer state detection using piezoelectric sensors

VL Stuber, M Kotsonis… - Smart Materials and …, 2021 - iopscience.iop.org
Two piezoelectric series bimorph sensors were embedded below the skin of a NACA 0012
symmetrical airfoil to detect the local state of the boundary layer during wind tunnel testing …

Analysis of a multi-axial quantum-informed ferroelectric continuum model: Part 2—sensitivity analysis

L Leon, RC Smith, WS Oates… - Journal of Intelligent …, 2018 - journals.sagepub.com
We illustrate the use of global sensitivity analysis, and a parameter subset selection
algorithm based on local sensitivity analysis, to quantify the relative influence of parameters …

Characteristics of a wingtip vortex from an oscillating winglet

TK Guha, R Kumar - Experiments in Fluids, 2017 - Springer
Initial perturbations in the wingtip vortices can potentially lead to instabilities that significantly
reduce their lifetime in the wake of an aircraft. An active winglet capable of oscillating about …

Characterization of piezoelectric macrofiber composite actuated winglets

TK Guha, WS Oates, R Kumar - Smart Materials and Structures, 2015 - iopscience.iop.org
The present study primarily focuses on the design, development, and structural
characterization of an oscillating winglet actuated using a piezoelectric macrofiber …

Active subspace analysis and uncertainty quantification for a polydomain ferroelectric phase-field model

LS Leon, PR Miles, RC Smith… - Journal of Intelligent …, 2019 - journals.sagepub.com
We perform parameter subset selection and uncertainty analysis for phase-field models that
are applied to the ferroelectric material lead titanate. A motivating objective is to determine …

Active control of wingtip vortices using piezoelectric actuated winglets

TK Guha, R Kumar - 54th AIAA Aerospace Sciences Meeting, 2016 - arc.aiaa.org
Wingtip vortices are caused by the pressure difference between the upper and lower surface
of a wing equalizing at the tip. In the present study, piezoelectric Macro Fiber Composite …

Active subspace uncertainty quantification for a polydomain ferroelectric phase-field model

LS Leon, RC Smith, P Miles… - Behavior and Mechanics …, 2018 - spiedigitallibrary.org
Quantum-informed ferroelectric phase field models capable of predicting material behavior,
are necessary for facilitating the development and production of many adaptive structures …

Introducing Perturbations into Turbulent Wall-Bounded Flow With Arrays of Long TiO2 Nanowires

HA Sodano, A Koka, CR Guskey… - Journal of Fluids …, 2015 - asmedigitalcollection.asme.org
A currently unexplored mechanical application of nanowires is near-wall active flow
manipulation, with potential uses mixing and filtering chemicals, enhancing convective heat …