101–150 von 392 Ergebnissen
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    Transparent spinel development

    Patterson, M. / Caiazza, J.E. / Roy, D.W. | Tema Archiv | 2000
    The optical and mechanical properties of polycrystalline MgAl2O4 spinel make this material of interest for ...

    Smart materials for turbomachinery quieting

    Jonson, M.L. / Lysak, P.D. / Willits, S.M. | Tema Archiv | 2000
    materials for quieting turbomachinery. The team is composed of representatives from Pennsylvania State University, General Dynamics Electric Boat ...

    Adaption of commercial glass panels to upgrade the cockpit of the P-3 aircraft

    Seinfeld, R.D. / Herman, R.P. | Tema Archiv | 2000
    information for both pilot and copilot. This paper discusses the challenges of using commercial glass in such an application. The aircraft environment ...

    Integrated wireless piezoelectric sensors

    Ihler, E. / Zaglauer, H.W. / Herold-Schmidt, U. et al. | Tema Archiv | 2000
    the service life, for instance of an aircraft. Complex sensor systems will require significant additional expenditures with respect to cabling ...

    Development of damage suppression system using embedded SMA foil sensor and actuator

    Ogisu, T. / Nomura, M. / Andou, N. et al. | Tema Archiv | 2000
    Recent studies suggest possible applications of shape memory alloy (SMA) for smart health monitoring and suppression of damage growth. The ...

    Feasibility of using piezoelectric actuators to control launch vehicle acoustics and structural vibrations

    Niezrecki, C. / Cudney, H.H. | Tema Archiv | 2000
    model for the actuator and boundary element analysis. The experimentally validated model is used to extrapolate results for an SS cylinder that ...

    Industrial and commercial applications of bi-stable reeled composites

    Compton-Bishop, Q.M. / Daton-Lovett, A.J. / Curry, R.G. | Tema Archiv | 2000
    their retracted length. Used for the remote deployment of cameras and other tools into hazardous environments, BRC actuators have facilitated ...

    Optical-fiber-based adhesive bondline monitoring system for composite patch systems

    Elster, J. / Trego, A. / Dante, J. et al. | Tema Archiv | 2001
    levels in the technology. The presented sensing system is comprised of optical fiber long period gratings (LPGs) for chemical measurement and ...

    Impact damage detection of stiffened composite panels by using embedded small-diameter optical fibers

    Tsutsui, H. / Kawamata, A. / Sanda, T. et al. | Tema Archiv | 2001
    by the sensors. In this study, both multi-mode optical fibers and fiber bragg grating (FBG) sensors are used for detecting impact load and ...

    Development of low-OPD windows for airborne laser

    Billman, K.W. / Tran, D.C. / Johnson, L.F. et al. | Tema Archiv | 2001
    We begin with a brief review of prior work relating to optical windows for use with high power laser beams. A typical window must provide ...

    A two color Mach 3 IR coating for TAMD systems

    Clark, C.C. / Haddow, D. | Tema Archiv | 2001
    successfully protected to include gallium arsenide. BP has already been used as part of a dual band coating for FLIR grade ZnS which performs well ...

    Electro-mechanical impedance method for crack detection in metallic plates

    Giurgiutiu, V. / Zagrai, A. | Tema Archiv | 2001
    positive results obtained for 1-D structure onto 2-D structures. Experiment analysis of 1-D and 2-D structures has shown that E/M impedance (or ...

    Solid particle erosion performance of a new ultradurable AR for silicon

    Clark, C.C. | Tema Archiv | 2001
    protective or substrates must become more durable. For MWIR only systems it is logical to use silicon as a window or dome material as the natural ...

    Processing of carbon-fiber-reinforced composite (CFRP) materials with innovative millimeter-wave technology for aerospace industries

    Hunyar, C. / Feher, L. / Thumm, M. | Tema Archiv | 2001
    characteristic features such as light weight and high specific firmness. For the time being, the main obstacle for widespread industrial applications are ...

    Surface-mounted periodic field eddy current sensors for structural health monitoring

    Goldfine, N.J. / Zilberstein, V.A. / Schlicker, D.E. et al. | Tema Archiv | 2001
    mounted, like a strain gage, at critical locations for detection of crack initiation and monitoring of crack growth. This can be accomplished on a ...

    Miniature vibration isolation system for space applications

    Quenon, D. / Boyd, J. / Buchele, P. et al. | Tema Archiv | 2001
    Laboratory along with its partner DARPA, have initiated an aggressive program to develop a Miniature Vibration Isolation System (MVIS) for space ...

    Materials and actuators for the shape control of structures

    des Rochettes, H.M. / Petitniot, J.L. | Tema Archiv | 2001
    Smart materials and actuators meet a noticeable requirement for the shape control of aerodynamic surfaces. This interest is borne as well ...

    Air vehicle integration issues and considerations for CLAS successful. implementation

    Lockyer, A.J. / Alt, K.H. / Kudva, J.N. et al. | Tema Archiv | 2001
    solved for final technology inclusion in an operational air-vehicle. Presented are some key results from the Air Force Research Laboratory's ...

    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 ...

    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 ...

    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 ...

    Mandrel reusability in precision replication of ZnS conformal domes

    Goela, J.S. / Askinazi, J. / Robinson, B. | Tema Archiv | 2001

    Active sensor wave propagation health monitoring of beam and plate structures

    Giurgiutiu, V. / Bao, Jing-Jing / Wei, Zhao | Tema Archiv | 2001
    Active sensor wave propagation technique is a relatively new method for in-situ nondestructive evaluation (NDE). Elastic waves propagating ...

    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 ...

    Focal plane array design using IR-SIM software system

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

    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 ...

    Structural health monitoring using FBG sensor in space environment

    Kabashima, S. / Ozaki, T. / Takeda, N. | Tema Archiv | 2001
    expected to be a very useful tool. The authors are developing a health monitoring system for satellites utilizing a FBG (fiber Bragg grating ...

    Application of smart materials in automotive structures

    Manz, H. / Breitbach, E. | Tema Archiv | 2001
    The demand in the automobile sector for greater comfort in the vehicle is of high importance alongside the requirements for a low emission ...

    Smart wide-area imaging sensor system (SWISS)

    Kress, K.P. / Dittrich, K. / Guse, G. | Tema Archiv | 2001
    For some structural components conventional methods of loads and usage monitoring, supplemented by on ground NDT measurements to detect ...

    Narrow and broad band sound reduction in automotive panels

    Giovanardi, M. / Schmidt, K. / Kunze, H. | Tema Archiv | 2001
    the FEM. Optimal control laws were determined, using system models based on control and disturbance transfer functions. For narrowband control ...

    Environmentally responsive material to address human-system interaction in the automotive cockpit

    Rehkopf, J.D. / Barbat, S.D. / Goldman, N.M. et al. | Tema Archiv | 2001
    There is significant human-system interaction in an automotive cockpit, and for particular components this interaction can be ever-present ...

    Re-engineering organizations for optimal deployment of smart materials and intelligent devices in civil infrastructure [4704-40]

    El-Diraby, T. E. / Beheshti, A. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Recent advances in aerospace composite NDE [4704-18]

    Georgeson, G. E. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Near DC eddy current measurement of aluminum multilayers using MR sensors and commodity low-cost computer technology [4704-23]

    Perry, A. R. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Fiber optic evanescent field sensors for pH monitoring in civil infrastructure [4704-37]

    Ghandehari, M. / Vimer, C. S. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Detection, discrimination, and real-time tracking of cracks in rotating disks [4704-22]

    Haase, W. C. / Drumm, M. J. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Pulsed thermography of ceramic matrix composites [4704-15]

    Martin, R. E. / Gyekenyesi, A. L. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Experimental verification of tapping sound analysis for the inspection of laminated composite structures [4704-10]

    Hwang, J. S. / Kim, S. J. / International Society for Optical Engineering | British Library Conference Proceedings | 2002

    Polymer waveguides for 100 cm (40") optical backplanes

    Moisel, J. / Guttmann, J. / Huber, H.P. et al. | Tema Archiv | 2002
    Optical backplanes are attractive components for systems with high data rates between subsystems and a large number of interconnects. An ...

    Radiation qualification and testing of a large number of optical glasses used in the ESA fluid science laboratory onboard the columbus orbital Facility of the international space station

    Doyle, D.B. / Dewandre, T.M. / Claessens, D. et al. | Tema Archiv | 2002
    International Space Station (ISS) is a multi-user facility for the performance of microgravity research. It comprises a very complex optical bench ...

    Structural health monitoring using wireless sensing systems with embedded processing [4704-35]

    Tanner, N. A. / Farrar, C. R. / Sohn, H. et al. | British Library Conference Proceedings | 2002

    Vibration isolation techniques suitable for portable electronic speckle pattern interferometry [4704-24]

    Findeis, D. M. / Gryzagoridis, J. / Rowland, D. R. et al. | British Library Conference Proceedings | 2002

    Nondestructive evaluation of ceramic matrix composites coupled with finite element analyses [4704-07]

    Abdul-Aziz, A. / Baaklini, G. Y. / Bhatt, R. et al. | British Library Conference Proceedings | 2002

    Modal-based diagnostics of cracked rotors [4704-21]

    Sawicki, J. T. / Gyekenyesi, A. L. / Baaklini, G. Y. et al. | British Library Conference Proceedings | 2002

    Effect of experimental conditions on acousto-ultrasonic reproducibility [4704-26]

    Gyekenyesi, A. L. / Harmon, L. M. / Kautz, H. E. et al. | British Library Conference Proceedings | 2002

    Utilizing the sequential probability ratio test for building joint monitoring [4704-01]

    Allen, D. W. / Sohn, H. / Worden, K. et al. | British Library Conference Proceedings | 2002

    Guided-wave ultrasonics for NDE of aging aircraft components [4704-20]

    di Scalea, F. L. / Robinson, J. S. / Tuzzeo, D. et al. | British Library Conference Proceedings | 2002