61–80 von 157 Ergebnissen
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    NDE applications in an anchor bolt and sign bridge inspection program

    Fish, P.E. | Tema Archiv | 1998
    Verlag: SPIE International Society for Optical Engineering , Bellingham

    Smart fastener for KC-135 structural integrity monitoring

    Schoess, J.N. / Seifert, G. | Tema Archiv | 1997
    Hidden and inaccessible corrosion in aircraft structures is the number-one logistics problem for the U.S. Air Force, with an estimated ...

    Frontiers in Infrared Windows and Dome Materials

    Harris, D.C. | Tema Archiv | 1995
    discussed. Engineering alternatives must be considered for extending the range of operating conditions for infrared windows and dome materials. ...

    Thermal investigation of real aircraft components

    Dal Toe, S. / Bison, P.G. / Marinetti, S. et al. | Tema Archiv | 2001
    Composite materials are prone to various damages, particularly if used for aeronautic fuselage components. These parts are increasingly ...

    Investigating the use of ultrasonic guided waves for aging wire insulation assessment

    Anastasi, R.F. / Madaras, E.I. | Tema Archiv | 2002
    becomes brittle and cracks. This exposes the underlying conductive wire to the potential for short circuits and fire. The difficulty is that ...

    Thruster-plume-induced contamination measurements from the PIC and SPIFEX flight experiments

    Soares, C.E. / Barsamian, H. / Rauer, S. | Tema Archiv | 2002
    developed for the International Space Station (ISS). ...

    Model reduction and substructuring for computing responses of structures containing frequency-dependent viscoelastic materials

    Germes, S. / Van Herpe, F. | Tema Archiv | 2002
    systems, there is still a need for finite element models capable of predicting the frequency response of structures containing VEM. We address in ...

    Multifunctional system for active noise control and damage detection on a typical aeronautical structure

    Lecce, L. / Viscardi, M. / Zumpano, G. | Tema Archiv | 2001
    piezo's was decided to be used also for health monitoring application. As a preliminary activity, an extensive monitoring was performed on the ...

    Polarization measurements of automobile paints

    Goldstein, D.H. | Tema Archiv | 2008
    micrometer. Depolarization indices for all polarimetric measurements were calculated. ...

    Feasibility study of embedded fiber-optic strain sensing for composite propeller blades

    Zetterlind, V.E. / Watkins, S.E. / Spoltman, M.W. | Tema Archiv | 2001
    feasibility of embedded fiber-optic smart instrumentation was examined for use in the commercial manufacture and testing processes used by Hartzell ...

    Multi-element adjustable transducer arrays for the ultrasonic scanning of aging aircraft

    Komsky, I.N. | Tema Archiv | 2002
    airplane structures. Conventional techniques for crack or corrosion characterization are based on either echo-amplitude measurements or time-of ...

    Integration of piezoceramic actuators in fiber-reinforced structures for aerospace applications

    Durr, J. / Herold-Schmidt, U. / Zaglauer, H.W. et al. | Tema Archiv | 1998
    Up to now experimental and theoretical research on active structures for aerospace applications has put the focus mainly on surface bonded ...

    Thin film coatings with variable emittance

    Larsson, A.L. / Niklasson, G. / Stenmark, L. | Tema Archiv | 1999

    Viscoelastic strain-energy hinge for solar array deployment

    Kwak, M.K. / Ra, Wan-Kyu / Yoon, Kwang-Joon | Tema Archiv | 1999
    This paper is concerned with the viscoelastic strain-energy hinge for solar array deployment. The original strain-energy hinge proposed by ...

    Detection of disbonds in a honeycomb composite structure using guided waves

    Baid, H. / Banerjee, S. / Joshi, S. et al. | Tema Archiv | 2008

    Thermal and mechanical performance of a carbon-carbon composite spacecraft radiator

    Kuhn, J.L. / Benner, S.M. / Butler, C.D. et al. | Tema Archiv | 1999
    weight. However, the high cost and long lead-time for carbon-carbon manufacture have limited their widespread usage. Consequently, an informal ...

    Developing 1-3 piezocomposites for large-area smart skin applications

    Ting, R.Y. / Howarth, T.R. | Tema Archiv | 1997
    New 1-3 piezocomposite materials have been investigated for potential underwater smart skin applications. PZT-5H was used as the ceramic ...

    Extraction of properties of condensed outgassed species by thermogravimetric analysis

    Simpson, T.R. / Hall, D.F. / Ternet, G.K. | Tema Archiv | 2002
    evaluator (ASCME). This paper provides fitted parameters for Langmuire evaporation models of contaminants from 15 materials based upon kinetic ...

    Molecularly oriented polymeric thin films for space applications

    Fay, C.C. / Stoakley, D.M. / St. Clair, A.K. | Tema Archiv | 1998
    the earth has focused attention on organic polymeric materials for a variety of applications in space. Some polymeric materials have exhibited ...
    Verlag: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Structural health monitoring of composites using integrated ultrasonic transducers

    Kobayashi, M. / Wu, K.T. / Song, L. et al. | Tema Archiv | 2008
    Two types of ultrasonic sensors are presented for structural health monitoring (SHM) and non-destructive testing (NDT) of graphite/epoxy ...