Recent Submissions

  • Investigations on the development of a mixed displacement-pressure formulation for an anelastic displacement-field finite element 

    Rusovici, Razvan (2006-03-17)
    Space and weapon delivery systems contain guidance components and payload that need to be protected from the extremely harsh acoustic excitation present during launch operations. The above example represents just one ...
  • Formal tests for LLM approaches using refined cockpit display technology 

    Davis, Randall C.; Wilt, Dennis W.; Henion, James T.; Alter, Keith W.; Snow, Paul; Deaton, John E. (2005-05-31)
    Results are presented from formal flight and simulation experiments to test a new primary flight display (PFD)/refined multifunction display (MFD) system, with a computer generated dynamic pathway, as a viable means for a ...
  • Design of a piezoceramic-driven synthetic-jet actuator for aerodynamic performance improvement 

    Rusovici, Razvan; Offord, Casey; Honour, Ryan; Goto, Fumitaka; Louderback, Pierce; Phelps, Charles (2008-03-19)
    The interest in synthetic-jet actuators is elicited by their employment in fluid-control applications, including boundary-layer control, combustion control etc. These actuators are zero net-mass-flux devices, and generally ...
  • Quantitative characterization of resistive defects in thick composites using step heating thermography 

    Badghaish, Adel A.; Fleming, David C. (2008-03-17)
    Inspection of thick composite structures, such as Reinforced Thermosetting Resin (RTR) pipes used in the petroleum industry, using infrared thermography is difficult. This paper investigates the use of step heating ...
  • Optical encryption as a function of polarization in optical fiber communications 

    Murshid, Syed H.; Muralikrishnan, Hari Priya; Tamilarasan, Jayachandran; Chakravarty, Abhijit; Caulfield, H. John (2011-04-25)
    An optical encryption technique based on polarization property of light is proposed. Many techniques using polarization beam splitters to encrypt the signal have been proposed earlier. They are based on splitting and ...
  • Smart actuation of inlet guide vanes for small turbine engine 

    Rusovici, Razvan; Kwok-Choon, Stephen T.; Sepri, Paavo; Feys, Joshuo (2011-03-07)
    Unmanned Aerial Vehicles (UAVs) have gained popularity over the past few years to become an indispensable part of aerial missions that include reconnaissance, surveillance, and communication [1]. As a result, advancements ...
  • Robust decentralized formation flight control 

    Zhao, Weihua; Go, Tiauw Hiong (2011)
    Motivated by the idea of multiplexed model predictive control (MMPC), this paper introduces a new framework for unmanned aerial vehicles (UAVs) formation flight and coordination. Formulated using MMPC approach, the whole ...
  • Damping of Seismic Vibrations of a 3D Asymmetrical Building Model with Multiple TMD’s 

    Pinelli, Jean-Paul; Chen, Kai; Gutierrez, Hector; Rusovici, Razvan (2014-07)
    In this paper, the authors investigate the control of the seismic response of a three dimensional asymmetrical tier-building model, with a combination of three tuned mass dampers (TMD) located on the upper floor of the ...
  • Integrodifferential diffusion equation for continuous-time random walk 

    Wang, Kegang; Fa, Kwok Sau (2010-01-21)
    In this paper, we present an integrodifferential diffusion equation for continuous-time random walk that is valid for a generic waiting time probability density function. Using this equation, we also study diffusion behaviors ...
  • Continuous time random walk with generic waiting time and external force 

    Wang, Kegang (2010-05-20)
    We derive an integrodifferential diffusion equation for decoupled continuous time random walk that is valid for a generic waiting time probability density function and external force. Using this equation we also study ...
  • Shock interaction with one-dimensional array of particles in air 

    Sridharan, P.; Jackson, Thomas L.; Zhang, J.; Balachandar, S. (2015)
    In this paper, we present axisymmetric numerical simulations of shock propagation in air over an aluminum particle for Mach numbers up to 10. The numerical method is a finite-volume based solver on a Cartesian grid that ...
  • Singular behavior of the Debye-Waller factor of graphene 

    Tewary, Vinod K.; Yang, Bo (2009-03-16)
    It is shown that the mean-square displacement or the exponent of the Debye-Waller factor of graphene has a singularity except at zero temperature. The zero-temperature values of the mean-square displacement are calculated ...
  • Parametric interatomic potential for graphene 

    Tewary, Vinod K.; Yang, Bo (2009-02-27)
    A parametric interatomic potential is constructed for graphene. The potential energy consists of two parts: a bond energy function and a radial interaction energy function. The bond energy function is based on the ...
  • Road surface mirage: A bunch of hot air? 

    Zhou, Huaichun; Huang, Zhifeng; Cheng, Qiang; Lü, Wei; Qiu, Kui; Chen, Chen; Hsu, Peifeng (2011-04-20)
    The inferior mirage from road surfaces is a common phenomenon, which can be easily seen in everyday life. It has been recognized in the literature as a light refraction phenomenon due to the refractive index gradient caused ...
  • Hydrogenation of magnesium nanoblades: The effect of concentration dependent hydrogen diffusion 

    Yang, Bo; He, Yuping; Zhao, Yiping (2011-02-22)
    By assuming the H diffusion coefficient and H adsorption rate to be exponentially and linearly dependent on concentration, a physical model is developed to predict the hydrogenation process of Mg nanoblades. The predicted ...
  • Capillary-mediated dendritic branching 

    Glicksman, Martin E. (2012)
    We consider the Gibbs-Thomson temperature distribution as an active interface energy field with gradients and fluxes. Capillarity in conventional dendritic growth theories acts only as a passive boundary condition on the ...