Department of Mechanical Engineering
Recent Submissions
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Performance assessment of commercial heat pipes with sintered and grooved wicks under natural convection
(TIBTD, 2019)Heat pipes are widely used in thermal management of high heat flux devices due to their ability of removing high heat loads with small temperature differences. While the thermal conductivity of standard metal coolers is ... -
High-performance adaptive pressure control in the presence of time delays: Adaptive pressure control for use in variable-thrust rocket development
(IEEE, 2018)The precise control of gas generator pressure is important to obtain variable thrust in ducted rockets. A delay resistant closed loop reference model adaptive control is proposed in this paper to address this problem. The ... -
Game-theoretic modeling of traffic in unsignalized intersection network for autonomous vehicle control verification and validation
(IEEE, 2020)For a foreseeable future, autonomous vehicles (AVs) will operate in traffic together with human-driven vehicles. Their planning and control systems need extensive testing, including early-stage testing in simulations where ... -
Handling actuator magnitude and rate saturation in uncertain over-actuated systems: a modified projection algorithm approach
(Taylor and Francis, 2020)This paper proposes a projection algorithm which can be employed to bound actuator signals, in terms of both magnitude and rate, for uncertain systems with redundant actuators. The investigated closed-loop control system ... -
Nanomechanical measurement of the Brownian force noise in a viscous liquid
(American Chemical Society, 2020)We study the frequency spectrum of the thermal force giving rise to Brownian motion of a nanomechanical beam resonator in a viscous liquid. In the first set of experiments, we measure the power spectral density (PSD) of ... -
Nonlinear identification and optimal feedforward friction compensation for a motion platform
(Elsevier, 2020)In this study, we present a method of nonlinear identification and optimal feedforward friction compensation for an industrial single degree of freedom motion platform. The platform has precise reference tracking requirements ... -
Capillary origami as a new method for obtaining folded structures with interior nanoparticle coating
(Elsevier, 2020)We introduce capillary origami as a new method to obtain 3D enclosures with coated nanoparticles on their inner surfaces. When a liquid droplet that contains nanoparticles is placed on the surface of a thin and flexible ... -
Investigation of effect of design and operating parameters on acoustophoretic particle separation via 3D device-level simulations
(Springer, 2020)In the present study, a 3D device-level numerical model is implemented via finite element method to assess the effects of design and operating parameters on the separation performance of a microscale acoustofluidic device. ... -
Controlling a launch vehicle at exoatmospheric flight conditions via adaptive control allocation
(Turkiye Klinikleri, 2020)The focus of this paper is the control of a reusable launch vehicle at exoatmospheric flight conditions, in the presence of actuator effectiveness uncertainty. Since during exoatmospheric flight, dynamic pressure is ... -
Observation of coupled mechanical resonance modes within suspended 3D nanowire arrays
(Royal Society of Chemistry, 2020)Complex yet compact nanoscale mechanisms have largely been absent due to the rather limited availability of components and integration techniques. Especially missing have been efficient interconnects with adjustable ... -
Optimization of piezoresistive motion detection for ambient NEMS applications
(Institute of Electrical and Electronics Engineers, 2020)Electrical readout of nanomechanical motion in ambient pressure and temperature imposes an important challenge for emerging applications of nanoelectromechanical systems (NEMS). Here, we optimize a metallic piezoresistive ... -
Full electrostatic control of nanomechanical buckling
(American Physical Society, 2020)Buckling of mechanical structures results in bistable states with spatial separation, a feature desirable for sensing, shape configuration, and mechanical computation. Although different approaches have been developed to ... -
Correction to: The computational framework for continuum-kinematics-inspired peridynamics
(Springer Science and Business Media Deutschland GmbH, 2020-09-03) -
The computational framework for continuum-kinematics-inspired peridynamics
(Springer Science and Business Media B.V., 2020)Peridynamics (PD) is a non-local continuum formulation. The original version of PD was restricted to bond-based interactions. Bond-based PD is geometrically exact and its kinematics are similar to classical continuum ... -
Bounds on size effects in composites via homogenization accounting for general interfaces
(Springer, 2020-01)This manuscript provides novel bounds and estimates, for the first time, on size-dependent properties of composites accounting for generalized interfaces in their microstructure, via analytical homogenization verified by ... -
Linear stability analysis of evaporating falling liquid films
(Elsevier, 2020)We consider the linear stability of evaporating thin films falling down an inclined plate. The one sided-model presented first by “Burelbach, J.P., Bankoff, S.G., Davis, S.H., 1988, Nonlinear stability of evaporating/condensing ... -
NURBS-based non-periodic finite element framework for Kohn-Sham density functional theory calculations
(Elsevier, 2020)A real-space non-periodic computational framework is developed for Kohn-Sham density functional theory (DFT). The electronic structure calculation framework is based on the finite element method (FEM) where the underlying ... -
A theoretical framework for comprehensive modeling of steadily fed evaporating droplets and the validity of common assumptions
(Elsevier, 2020)A theoretical framework is established to model the evaporation from continuously fed droplets, promising tools in the thermal management of high heat flux electronics. Using the framework, a comprehensive model is developed ... -
Bifurcation behavior of compressible elastic half-space under plane deformations
(Elsevier, 2020)A finitely deformed elastic half-space subject to compressive stresses will experience a geometric instability at a critical level and exhibit bifurcation. While the bifurcation of an incompressible elastic half-space is ... -
A thermo-mechanical model of drill margin-borehole surface interface contact conditions in dry drilling of thick CFRP laminates
(Elsevier, 2020)Dry drilling of thick carbon fiber reinforced polymer (CFRP) laminates requires careful selection of process parameters in order to obtain acceptable borehole surface quality. Complex contact conditions between the drill ...
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