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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

    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 ...

    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 ...

    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

    Inspection of Lamb waves in carbon fiber composites using shearographic interferometry

    Focke, O. / Hildebrand, A. / Kopylow, C. von et al. | Tema Archiv | 2008
    . The optical implementation of both techniques within the interferometically setup and experimental results with the possibility to measure the ...

    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 ...

    Lane detection system for autonomous vehicle navigation

    Bhatia, A. | Tema Archiv | 2007
    This paper represents the vision processing solution used for lane detection by the Insight Racing team, for DARPA Grand Challenge 2007 ...

    Terminal phase visual position estimation for a tail-sitting vertical takeoff and landing UAV via a Kalman filter

    Tsai, A.C. / Gibbens, P.W. / Stone, R.H. | Tema Archiv | 2007
    Computer vision has been an active field of research for many decades; it has also become widely used for airborne applications in the last ...

    An adaptive localization system for outdoor/indoor navigation for autonomous robots

    Pacis, E.B. / Sights, B. / Ahuja, G. et al. | Tema Archiv | 2006
    of autonomous navigation for mobile robots has targeted either outdoor or indoor scenarios, but not both, which is not how humans operate ...

    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 ...

    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 ...

    High-fidelity simulation capability for virtual testing of seismic and acoustic sensors

    Wilson, D.K. / Moran, M.L. / Ketcham, S.A. et al. | Tema Archiv | 2005
    This paper describes development and application of a high-fidelity, seismic/acoustic simulation capability for battlefield sensors. The ...

    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 ...

    Unattended ground sensor based on fiber Bragg grating technology

    Zhang, Yan / Li, Sanguo / Yin, Zhifan et al. | Tema Archiv | 2005
    In this paper we have demonstrated an unattended seismic wave sensor based on the optical fiber Bragg grating (FBG) sensing technology. The ...

    Development of an active twist rotor blade with distributed actuation and orthotropic material

    Wierach, P. / Riemenschneider, J. / Keye, S. | Tema Archiv | 2005
    Individual blade control (IBC) as well as higher harmonic control (HHC) for helicopter rotors promises to be a method to increase flight ...

    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 ...

    Optimized grouping of piezoelectric actuators on a flexible fin

    Rader, A. / Yousefi-Koma, A. / Afagh, F. et al. | Tema Archiv | 2005
    This paper presents a new method used to determine the optimum group configuration of any specified number of piezoelectric actuators for ...

    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 ...

    GSIM: a simulator for missile seekers

    Lindgren, M. / Engvall, A. / Kihlen, R. | Tema Archiv | 2004
    A simulator (GSIM) for missile seekers that can be used as a general tool in missile seeker performance analysis has been developed. The ...

    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 ...

    A probabilistic approach for mine burial prediction

    Barbu, C. / Valent, P. / Richardson, M. et al. | Tema Archiv | 2004

    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 ...

    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 ...

    Distortions of laser beams by turbulent aero-engine jet: experiment and numerical modeling

    Borisova, N.F. / Ivanova, I.V. / Sirazetdinov, V.S. | Tema Archiv | 2004
    The experimental studies of spatial characteristics for laser beams disturbed by a turbulent aero-engine jet were carried out. The angular ...

    Spatial modeling of occlusion patterns applied to the detection of surface-laid mines

    Lundberg, M.P. / Brown, C.L. / Uppsall, M.S. | Tema Archiv | 2004

    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 ...

    An analysis of near-field rocket noise involving shock waves

    Xu, Qiang | Tema Archiv | 2004

    Aircraft interior ANC with flat panel speakers

    Gerner, C. / Sachau, D. / Breitbach, H. | Tema Archiv | 2004
    In a propeller driven aircraft the main source for internal noise are tonal disturbances caused by the propeller blades that are passing ...

    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 ...

    Probabilistic neural networks for infrared imaging target discrimination

    Cayouette, P. / Labonte, G. / Morin, A. | Tema Archiv | 2003
    The next generation of infrared imaging trackers and seekers will allow for the implementation of more sophisticated and smarter tracking ...

    Robustness of features for automatic target discrimination in high resolution polarimetric SAR data

    Broek, A. van den / Dekker, R. / Steeghs, P. | Tema Archiv | 2003
    We have studied the robustness of features against aspect variability for the purpose of target discrimination using polarimetric 35 Ghz ...

    Subwavelength volume holographic grating in photopolymer for the liquid crystal display viewing angle compensation

    Lee, M.S.L. / Delboulbe, A. / Gomez, G. et al. | Tema Archiv | 2003
    interest for the direct view liquid crystal displays that suffer from a narrow viewing angle. In fact, by providing high birefringence, they ...

    Electroactive-polymer-based MEMS for aerospace and medical applications

    Xu, Tian-Bing / Su, Ji / Zhang, Qiming | Tema Archiv | 2003
    magneostrictive materials for electromechanical device applications due to their high strain, light weight, flexibility, and low cost. Electroactive ...

    Dynamic holographic interferometry with photorefractive crystals: review of applications and advanced techniques

    Georges, M.P. / Thizy, C. / Scauflaire, V.S. et al. | Tema Archiv | 2003
    destructive testing (defect detection), displacement metrology, vibration mode shape visualization, as well as a study for the use of photorefractive ...

    Asymptotic performance of ATR in infrared images

    Ceritoglu, C. / Bitouk, D. / Miller, M.I. et al. | Tema Archiv | 2003
    In this study, the asymptotic performance analysis for target detection-identification through Bayesian hypothesis testing in infrared ...

    Multitarget-multisensor data association using the tree-reweighted max-product algorithm

    Chen Lei / Wainwright, M.J. / Cetin, M. et al. | Tema Archiv | 2003
    -sized applications. We describe an iterative method for solving the optimal data association problem in a distributed fashion; the work exploits ...

    Fuzzy logic resource manager: decision tree topology, combined admissible regions, and the self-morphing property

    Smith, J.F. III | Tema Archiv | 2003
    incorporation of expertise. Genetic algorithm based optimization is conducted to determine the form of the membership functions for the fuzzy root ...

    Intelligent sensor management to minimize detection error

    Wegrzyn, J.W. / Kastella, K.D. | Tema Archiv | 2003
    location to test next. For non-myopic optimization, graph search techniques are used. When the sensor output is thresholded, the performance ...

    Applications of cold hibernated elastic memory (CHEM) structures

    Sokolowski, W.M. / Hayashi, S. | Tema Archiv | 2003
    volume, and low-cost self-deployable structures for space and commercial applications. The material technology called "cold hibernated elastic ...

    Sensitivity of fusion performance to classifier model variations

    Goebel, K.F. | Tema Archiv | 2003
    is how the output should be distributed, in particular for multi-class continuous output classifiers. Using the wrong distribution may lead ...

    Development of a semi-active friction device to reduce vibration by energy dissipation

    Buaka, P. / Masson, P. / Micheau, P. | Tema Archiv | 2003

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