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    Research on the Support and Gravitational Deformation of Large Aperture Primary Mirror of Space Telescopes

    Peng, Yang-Lin / Dai, Yi-Fan / Chen, Shan-Yong | Tema Archiv | 2012
    telescopes are used in weightless environments, which is different from the ground environment for optical machining and testing. Therefore the ...

    Defect free spinel ceramics of high strength and high transparency

    Sepulveda, Juan L. / Loutfy, Raouf O. / Chang, Sekyung | Tema Archiv | 2009
    for armored vehicles, aircrafts, and missiles. The novel spinel material exhibits high optical and IR transparency in the 0.3 - 5.5 my m ...
    Verlag: American Ceramic Society (ACS) , Westerville

    Instrumented hertzian indentation study of two commerical silicon carbides

    Miller, H.T. / McCuiston, R.C. / LaSalvia, J.C. | Tema Archiv | 2009
    ballistic threats. Pressureless-sintered SiCs are attractive alternatives to hot-pressed variants for some particular applications based upon cost ...
    Verlag: American Ceramic Society (ACS) , Westerville

    Microstructural examination and quasi-static property determination of sintered armor grade SiC

    Demirbas, Memduh V. / Haber, Richard A. / Brennan, Raymond E. | Tema Archiv | 2009
    in a sintered armor SiC tile. A set of several tiles had been previously scanned by ultrasound and one tile from that set was selected for ...
    Verlag: American Ceramic Society (ACS) , Westerville

    Antimony-based superlattices for high-performance infrared imagers

    Walther, M. / Rehm, R. / Schmitz, J. et al. | Tema Archiv | 2008
    InAs/GaSb short-period superlattices (SL) for the fabrication of mono- and bispectral thermal imaging systems in the mid-wavelength ...

    A MEMS-based infrared emitter array for combat identification

    San, Haisheng / Chen, Xuyuan / Xu, Peng et al. | Tema Archiv | 2008
    decreased. In experiment, the surface temperature distribution of IR emitter arrays were measured by thermal imaging system, and the optical ...

    Hybrid, contact, and no contact measurement system for industry

    Sitnik, R. / Sladek, J. / Kupiec, M. et al. | Tema Archiv | 2008
    the paper we present a concept that combines the accuracy of coordinate measurement machines (CMM) and the speed of full-field optical methods ...

    Damage quantification using attenuation based signal processing for health monitoring in carbon fiber composites

    Reynolds, W. / Chattopadhyay, A. | Tema Archiv | 2008
    conditions. In the current research, a structural health monitoring (SHM) and prognosis framework is being developed for heterogeneous material ...

    Detection of impact damage on thermal protection systems using thin-film piezoelectric sensors for integrated structural health monitoring

    Na, J.K. / Kuhr, S.J. / Jata, K.V. | Tema Archiv | 2008
    is developing a reliable and robust on-board sensing/monitoring capability for next generation thermal protection systems to detect and ...

    Damage detection and leakage alert of fiber composite wrapped tank for high pressure hydrogen storage

    Sun, Xiao-Yan / Huston, D.R. / Qin, Quan et al. | Tema Archiv | 2008
    Car manufactures are turning to high pressure hydrogen storage for on-broad power applications. Fiber-composite-wrapped high pressure ...

    Polarization measurements of automobile paints

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

    Detection of disbonds in a honeycomb composite structure using guided waves

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

    Structural health monitoring of aerospace applications with restricted geometry

    Underwood, R.T. / Swenson, E.D. / Soni, S.R. | Tema Archiv | 2008
    This paper presents a set of results from an experiment that is designed to evaluate a damage detection approach for through-thickness ...

    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 ...

    High durability antireflection coatings for silicon and multispectral ZnS

    Joseph, S. / Marcovitch, O. / Yadin, Y. et al. | Tema Archiv | 2007
    both day and night. In order to achieve such capabilities, advanced electro-optical systems are being constantly developed and improved. These ...

    Addressing fiber optic sensors limitations for aircraft applications

    Mrad, N. | Tema Archiv | 2007
    problems within the aerospace community. Sensors with increased networking capability are seen to constitute the nervous system for any envisaged ...

    Adsorption coefficients for TNT on soil and clay minerals

    Rivera, R. / Pabon, J. / Perez, O. et al. | Tema Archiv | 2007
    fractions were separated from the other soil components by centrifugation. Using the hydrometer method the particle size distribution for the soil ...

    Stable 600 deg C silicon carbide MEMS pressure transducers

    Okojie, R.S. | Tema Archiv | 2007
    need for wire bonding, thereby removing some reliability issues encountered at high temperature. Generally, at 600 deg C the full-scale output ...

    High-precision investigations of the fast range imaging camera SwissRanger&trade

    Kahlmann, T. / Ingensand, H. | Tema Archiv | 2007
    required that provide fast, accurate, and reliable 3-D data. Automotive applications long for real time and reliable data, not only for driving ...

    Fiber optic microsensor hydrogen leak detection system on Aerospike X-33

    Kazemi, A.A. / Goepp, J.W. / Larson, D.B. et al. | Tema Archiv | 2007
    does not provide leak location and is not in real time. This system is very complex and cumbersome for production and ground support ...

    Nonlinear detection of land mines using wide bandwidth time-reversal techniques

    Sutin, A. / Libbey, B. / Kurtenoks, V. et al. | Tema Archiv | 2006
    for each channel. Each transducer re-radiates the time reversal impulse response. This provides efficient focusing of the seismic wave in both ...

    Water flow and distribution around buried landmines

    Koh, G. / Ginsberg, M.D. / Howington, S.E. | Tema Archiv | 2006
    Soil properties make a significant impact in the observed responses of various sensors for mine detection. Soil moisture affects the ...

    Influence of particle size on the vibration of plates loaded with granular material

    Turner, J.A. / Kang, Wonmo / Bobaru, F. et al. | Tema Archiv | 2006
    Acoustic methods of land mine detection rely on the vibrations of the top plate of the mine in response to sound. For granular soil (e.g ...

    On-line characterization of impacts on electrical train current collectors using integrated optical fiber grating sensor network

    Ecke, W. / Schroeder, K. / Kautz, M. et al. | Tema Archiv | 2005
    A sensor network consisting of unified fiber grating based temperature and strain sensor pads has been developed for integration in carbon ...

    A bioinspired vision chip architecture for collision detection in automotive applications

    Laviana, R. / Carranza, L. / Vargas, S. et al. | Tema Archiv | 2005
    This paper describes the architecture and retino-topic unit of a bio-inspired vision chip intended for automotive applications. The chip ...

    Distributed algorithms for small vehicle detection, classification and velocity estimation using unattended ground sensors

    Doser, A.B. / Yee, M.L. / O'Rourke, W.T. et al. | Tema Archiv | 2005
    locations of unknown roads by extending code developed by the Army Acoustic Center for Excellence at Picatinny Arsenal. The second approach utilized ...

    Modular dry-coupled ultrasonic probes for field inspections of multilayered aircraft structures

    Komsky, I.N. | Tema Archiv | 2005
    for the multi-layered inspections more advanced NDI techniques such as X-ray. However, application of the X-ray technique still requires ...

    Fusion of visual and eddy current inspection results for the evaluation of corrosion damage in aircraft lap joints

    Liu, Zheng / Forsyth, D.S. / Safizadeh, S. et al. | Tema Archiv | 2005
    laser displacement sensor is used to provide the reference. The EOL estimation is for the total material loss while the eddy current or pulsed ...

    Operation of ionic polymer-metal composites in water

    Yim, W. / Kim, K.J. / Paquette, J.W. et al. | Tema Archiv | 2005
    The ionic polymer-metal composite (IPMC) for flexible hydrodynamic propulsor blades can provide many new opportunities in the naval ...

    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 ...

    Revolutionary optical sensor for physiological monitoring in the battlefield

    Kingsley, S.A. / Sriram, S. / Pollick, A. et al. | Tema Archiv | 2004
    SRICO has developed a revolutionary approach to physiological status monitoring using state-of-the-art optical chip technology. The ...

    Thermoelectric infrared imaging sensors for automotive applications

    Hirota, M. / Nakajima, Y. / Saito, M. et al. | Tema Archiv | 2004
    summarized. This performance is suitable for consumer electronics as well as automotive applications. ...

    Laser impulse generation required for space debris deorbiting

    Watanabe, K. / Sasoh, A. | Tema Archiv | 2004
    Impulse generation using laser energy has advantages for aerospace propulsion; energy can be supplied from a remote device, thereby ...

    QWIP chip dual-color and multicolor FPAs for military applications

    McQuiston, B.K. / Cho, E. / Lim, W. et al. | Tema Archiv | 2004
    countries struggling for socio-economic stability long after the cessation of hostilities. This paper will describe the efforts to develop a near ...

    A linear ion trap for biological agent detection and identification

    Griffin, M.T. / McLuckey, S.A. | Tema Archiv | 2004
    A novel linear ion trap (LIT) system for protein bio-marker identification that provides significant improvement in sensitivity and dynamic ...

    Active periodic struts for gearbox support system

    Asiri, S. / Baz, A.M. / Pines, D.J. | Tema Archiv | 2004
    Active periodic structures exhibit unique dynamic characteristics that make them act as tunable mechanical filters for wave propagation. As ...

    Estimating the backscatter spectral dependence and relative concentration for multiple aerosol materials from lidar data

    Warren, R.E. / Vanderbeek, R.G. | Tema Archiv | 2004
    section coefficients, backscatter in the case of aerosols and absorptivity for vapors, be known in advance. While this typically is a reasonable ...

    Smart material actuators for airfoil morphing applications

    Tieck, R.M. / Mohanchandra, K.P. / Carman, G.P. | Tema Archiv | 2004

    Soil moisture and electrical conductivity prediction and their implication for landmine detection technologies

    Katsube, T.J. / Keating, P.K. / McNairn, H. et al. | Tema Archiv | 2004
    Physical properties, such as soil moisture, magnetic susceptibility and electrical conductivity (EC) are sources of signal interference for ...

    Application of microaccelerometer in target recognition

    Lan, Jinhui / Nahavandi, S. / Lan, T. | Tema Archiv | 2004
    artificial neural networks (NAA) is applied to recognition of seismic signals for vehicle targets. An improved back propagation (BP) algorithm and ...

    Laser-induced acoustic landmine detection with experimental results on buried landmines

    Heuvel, J.C. van den / Putten, F.J.M. van / Koersel, A.C. van et al. | Tema Archiv | 2004
    Acoustic landmine detection (ALD) is a technique for the detection of buried landmines including non-metal mines. Since it gives ...

    Evaluation of particulate contamination under the storage environment of ADEOS-II

    Itoh, N. | Tema Archiv | 2004
    Contamination monitoring of spacecrafts during ground processing operations is essential to maintain performance of optical systems. The ...

    Dynamic tire forces in vehicles with semi-active suspensions

    Pesterev, A.V. / Tan, Chin-An / Bergman, L.A. | Tema Archiv | 2004
    vehicle suspensions on the dynamic tire forces are examined for the development of smart suspension systems for pavement- and bridge-friendly ...

    Corrosion damage detection with piezoelectric wafer active sensors

    Thomas, D.T. / Welter, J.T. / Giurgiutiu, V. | Tema Archiv | 2004
    has become a priority issue for today's Air Force. One of the most critical structural problems is corrosion. In fact the KC-135 now costs$1.2 ...

    Experiments on an offshore platform model by FBG sensors

    Li, Dongsheng / Li, Hongnan / Ren, Liang et al. | Tema Archiv | 2004
    Optical fiber sensors show superior potential for structural health monitoring of civil structures to ensure their structural integrity ...

    Simultaneous monitoring of the corrosion activity and moisture inside aircraft lap joints

    Cooper, K.R. / Ma, Y. / Wikswo, J.P. et al. | Tema Archiv | 2004

    Design strength of optical glass

    Doyle, K.B. / Kahan, M.A. | Tema Archiv | 2003
    extremely conservative design approaches are typically used for optical elements made of glass. Determining a design allowable for glass elements is ...

    Concepts using optical MEMS array for ladar scene projection

    Smith, J.L. | Tema Archiv | 2003
    fiber optic cables. The concept calls for an optical MEMS (micro-electromechanical system) steerable micro-mirror array. IFOV's are a cluster of ...

    Science telescope for Gravity Probe B

    Wang, Suwen / Farley, R.P. / Goebel, J.H. et al. | Tema Archiv | 2003
    The gravity probe B relativity mission uses a fused-quartz optical star tracking telescope as the sensor for the control system which ...

    Classifier designs for binary classifications of ground vehicles

    Wu, Hongwei / Mendel, J.M. | Tema Archiv | 2003
    Our goal for this study is to construct classifiers with minimum classification error rates for three binary classification problems based ...

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