121–140 von 166 Ergebnissen
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    Development of a repairable IR composite window

    Ondercin, R.J. / Goldman, L.M. / Harker, A.B. | Tema Archiv | 1999
    limiting feature in the readiness and life-cycle costs for such IR systems is the durability of the exposed optical window in the harsh land and ...

    Space durable polymeric films: advanced materials for inflatable structures and thermal control applications

    Schuler, P. / Haghighat, R. | Tema Archiv | 1999
    excellent VUV stability and radiation resistance in ground based simulation tests. Two applications for these films include large inflatable ...
    Verlag: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Buckling behavior monitoring of composite wing box model using fiber Bragg grating sensor system

    Hong, Chang-Sun / Ryu, Chi-Young / Lee, Jung-Ryul et al. | Tema Archiv | 2001
    Advanced composites are being extensively used for aerospace structures due to the high stiffness to weight and high strength to weight ...

    Ground-based aircraft exhaust measurements of a Lufthansa Airbus A340 using FTIR-emission-spectrometry

    Schafer, K. / Heland, J. | Tema Archiv | 1999
    manufacturers for certification purposes which have to be extrapolated with respect to the actual parameters at cruise altitude. Precise data from in ...

    Proton ullage motor observations as possible precursors to explosions in space

    Maley, P.D. / Palmer, J.L. | Tema Archiv | 2001
    employed for non-military astronomical observation) in order to determine if optical signatures could reveal evidence as to which motors might be ...

    3-layered 3D flex based MCM: electrical characterization and reliability issues

    Morrison, W.B. / Railkar, T.A. / Malshe, A.P. et al. | Tema Archiv | 1999
    Polyimide flex is an accepted substrate material for commercial and specialized electronic packaging applications. The advantages of using ...

    Focal plane array design using IR-SIM software system

    Hess, G.T. / Sanders, T.J. / Newsome, G. et al. | Tema Archiv | 2001

    Vibration control of a gossamer toroidal structure using smart material actuators and sensors

    Jha, A.K. / Inman, D.J. | Tema Archiv | 2003
    Gossamer or inflatable structures have been a subject of renewed interest for space applications because of their lightweight, on-orbit ...

    Health monitoring of structures using fiber optic sensors

    Asundi, A. | Tema Archiv | 1999
    monitoring since the design methodology for these materials is still under development. While conventional NDT methods are improving, an on-line ...

    Imaging ultrasonic sensor system SWISS completed 60000 simulated flight hours to check structural integrity of aircraft subcomponent

    Kress, K.P. / Baderschneider, H.J. / Guse, G. | Tema Archiv | 2003
    Many military platforms such as fighter aircraft are nowadays operated for several decades under sometimes varying missions. Additional ...

    Sound and vibration control tests of Composite panel using piezoelectric sensors and actuators

    Takahashi, K. / Bansaku, K. / Sanda, T. et al. | Tema Archiv | 2001
    We have carried out tests for the sound and vibration control of the CFRP square panel. 500 Hz bandwidth noise through two speakers is ...

    Numerical simulation of inflatable membrane structures

    Kolar, R. / Whittinghill, C. / Agrawal, B. | Tema Archiv | 2001
    Inflatable structures are effective in space applications, as they are weight, volume and cost competitive. For certain space applications ...

    IR lasers in the object velocity remote sensing systems

    Kuzyakov, B.A. | Tema Archiv | 1999
    effective laser parameters were defined for the smaller bodies velocity analysis. The laser is supplied with an automatic tuning optical system ...

    Lamb wave assessment of fatigue damage in aluminum plates

    Grondel, S. / Moulin, E. / Delebarre, C. | Tema Archiv | 1999
    and compare it with delay evolution. Results are obtained for two types of fatigue sequences. It is experimentally shown that the relative ...

    Impact analysis of automotive structures with distributed smart material systems

    Peelamedu, S.M. / Naganathan, N.G. / Buckley, S. | Tema Archiv | 1999
    material site is predicted accounting for the material properties, piezoceramic thickness, adhesive thickness including the effect of adhesives. A ...

    Vibration and shape control of hinged light structures using electromagnetic forces

    Matsuzaki, Y. / Miyachi, S. / Sasaki, T. | Tema Archiv | 2003
    This paper describes a new electromagnetic device for vibration control of a light-weighted deployable/retractable structure which consists ...

    Neural network application in damage identification using multi-scale sensing data

    Studer, M. / Peters, K. | Tema Archiv | 2003
    different material scales make the identification of damage difficult with a single sensing device. On the other hand, for aerospace applications ...

    Drop-test study of parachute textile with embedded fiber optic sensors

    Li, Min / Li, Yulin | Tema Archiv | 2005
    fiber Bragg grating (FBG) sensors are taken into the comparison between the optical and mechanical testing results. Drop test results from both ...