121–140 of 476 hits
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    Vibration control of a flexible beam through a smart structure concept

    Goud, A.P. / Umapathy, M. | Tema Archive | 1998
    Active control has become important in structural systems as an efficient tool for vibration suppression. A cantilever beam has been chosen ...

    Prediction of buried mine-like target radar signatures using wideband electromagnetic modeling

    Warrick, A.L. / Azevedo, S.G. / Mast, J.E. | Tema Archive | 1998
    Current ground penetrating radars (GPR) have been tested for land mine detection, but they have generally been costly and have poor ...

    Fast route-planning approach to aircraft

    Yi Min / Ding, Mingyue / Zhou, Chenping | Tema Archive | 1998

    Progress in the development of an electronic nose using arrays of chemically sensitive carbon black-polymer resistors

    Doleman, B.J. / Severin, E.J. / Sanner, R.D. et al. | Tema Archive | 1998
    Response data were collected for a carbon black-polymer composite electronic nose array during exposure to homologous series of alkanes and ...

    Multiresolution motion estimation and target detection

    Karlsen, R.E. / Gorsich, D.J. / Gerhart, G.R. | Tema Archive | 1998
    can cover the field of regard much more quickly than foveal vision. In this paper, we present two hierarchical multiresolution methods for ...

    Concrete object recognition by multispectral systems

    Zlotnikov, K.A. | Tema Archive | 1998
    for the selection of concrete surfaces, such as runways, against natural backgrounds. The reliability of the object recognition process ...

    Laboratory testing of dithered infrared imaging systems

    Dawson, J.A. / Chambliss, M.A. / Kimbel, C.M. et al. | Tema Archive | 1998
    undersampled as long as the optical blur spot is smaller than the IRFPA elements. To increase the sampling rate, the scene can be optically dithered to ...

    Vehicular applications of smart material systems

    Leo, D.J. / Weddle, C. / Naganathan, N. et al. | Tema Archive | 1998
    The results of an initial investigation in the use of smart material system for automobiles are presented. For this work, a smart material ...

    Radiated noise control via structural vibration control

    Varadan, V.V. / Gopinathan, S.V. / Lim, Young-Hun et al. | Tema Archive | 1998
    actuators and sensors is addressed. A hybrid approach using a finite element formulation for the radiating walls of the enclosure is developed. We ...

    Nonlinear effects of electrorheological fluids and their application in smart avionic systems

    Berg, C.D. / Wellstead, P.E. | Tema Archive | 1998
    envisaged, for example the control of the passive damping characteristics of a landing gear oleo. This could be beneficial to the airframers by ...

    Identification of mechanical properties of composite lamina using a distributed piezoelectric transducer

    Hong, Danbi / Ryou, Jung-Kyu / Park, Sungho et al. | Tema Archive | 1998
    G12, are design parameters for the identification process. The proposed method is applied to predict the dynamic behavior of laminated ...

    Optics and photonics used in road transportation

    Gingras, D. | Tema Archive | 1998
    Photonics is ideal for precise, remote and contactless measurements in harsh conditions. Thanks to major breakthroughs in the technologies ...

    Degradation of Hubble Space Telescope metallized Teflon FEP thermal control materials

    Hansen, P.A. / Townsend, J.A. / Yoshikawa, Y. et al. | Tema Archive | 1998
    The mechanical and optical properties of the metallized Teflon Fluorinated Ethylene Propylene (FEP) thermal control materials on the Hubble ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Development of tailorable electrically conductive thermal control material system

    Deshpande, M.S. / Harada, Y. / Vaughn, J. | Tema Archive | 1998
    material design concepts that can provide required electrical conductivity along with acceptable optical and thermal properties performance when ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Analysis of retrieved Hubble Space Telescope thermal control materials

    Townsend, J.A. / Hansen, P.A. / Dever, J.A. et al. | Tema Archive | 1998
    The mechanical and optical properties of the thermal control materials on the Hubble Space Telescope (HST) have degraded over the nearly ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Solar absorption of the FEP samples returned from the HST Servicing Missions

    He, C. / Townsend, J.A. | Tema Archive | 1998
    Missions (SMs), was measured to assess the effect of the space environment on the optical properties of the material. The solar absorptance of the ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Recent advances in the quality of CVD diamond optical components

    Wort, C.J.H. / Pickles, C.S.J. / Beale, A.C. et al. | Tema Archive | 1999
    Reports on the properties and applications of polished polycrystalline diamond optical components produced by chemical vapor deposition and ...

    Direct optical sensing of underwater sound fields: naval applications

    Podlesak, M. | Tema Archive | 1999
    Control of underwater noise radiated by naval vessels relies on two factors. First, ship design for quiet operation, and second, provision ...

    Recent developments in the use of plastic optical fiber for an embedded wear sensor (for marine propulsion shafting)

    Cohen, E.I. / Mastro, S.A. / Nemarich, C.P. et al. | Tema Archive | 1999
    This paper describes recent developments of a practical, low cost embedded plastic optical fiber (POF) wear sensor system for the condition ...

    Using 0.8 mu m DMILL technology to realize an encoder/decoder for optical transmission at 550 Mbps

    Claus, H. / Cabuy, F. / Roef, P. | Tema Archive | 1999
    data is digitized at the antennae. An optical harness distributes clocking data to the antennae to synchronize the digitizing of the data, and ...