Results 81 to 90 of about 289,526 (311)

Study of advanced composite structural design concepts for an arrow wing supersonic cruise configuration [PDF]

Based on estimated graphite and boron fiber properties, allowable stresses and strains were established for advanced composite materials. Stiffened panel and conventional sandwich panel concepts were designed and analyzed, using graphite/polyimide and ...
Grande, D. L., Turner, M. J.
core   +1 more source

Design and commission of an experimental test rig to apply a full-scale pressure load on composite sandwich panels representative of aircraft secondary structure

, 2010
This paper describes the design of a test rig, which is used to apply a representative pressure load to a full-scale composite sandwich secondary aircraft structure.
Crump, D.A., Dulieu-Barton, J.M., Savage, J.   +2 more
core   +1 more source

Vacuum Structure and the Axion Walls in Gluodynamics and QCD with Light Quarks [PDF]

, 2000
Large N gluodynamics was shown to have a set of metastable vacua with the gluonic domain walls interpolating between them. The walls may separate the genuine vacuum from an excited one, or two excited vacua which are unstable at finite N (here N is the ...
A. Aurilia, A. Gorsky, A. R. Zhitnitsky, A. R. Zhitnitsky, A. V. Smilga, A. Vilenkin, C. Rosenzweig, E. Witten, E. Witten, F. Wilczek, G. Dvali, G. Dvali, G. Dvali, G. Dvali, G. Gabadadze, G. Gabadadze, G. Gabadadze, G. Gabadadze, G. Gabadadze, Gregory Gabadadze, H. Nicolai, I. Halperin, I. Halperin, I. Halperin, I. Halperin, I. Halperin, I. I. Kogan, J. E. Kim, M. A. Shifman, M. C. Huang, M. Creutz, M. Dine, M. H. G. Tytgat, M. Kalb, M. Luscher, M. Shifman, M. Shifman, M. Shifman, N. Evans, N. Evans, P. Di Vecchia, P. Sikivie, R. Arnowitt, R. Dashen, R. J. Crewther, R. J. Crewther, R. Kallosh, S. Chang, S. Weinberg, T. Banks, T. Fugleberg, V. I. Ogievetsky, Y. B. Zeldovich   +52 more
core   +2 more sources

Contact Lens with Moiré Patterns for High‐Precision Eye Tracking

Advanced Functional Materials, EarlyView.
This work presents a passive contact lens for high‐precision eye tracking, integrating a microscopic moiré grating label. The parallax‐induced shift of macroscopic moiré patterns enables angle measurement with 0.28° precision using a standard camera under ambient light.
Ilia M. Fradkin, Roman V. Kirtaev, Mikhail S. Mironov, Dmitriy V. Grudinin, Alexander A. Marchenko, Marina M. Chugunova, Valentin R. Solovei, Alexander V. Syuy, Andrey A. Vyshnevyy, Ilya P. Radko, Aleksey V. Arsenin, Valentyn S. Volkov   +11 more
wiley   +1 more source

Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load

International Journal of Aerospace Engineering, 2015
Triangular grid reinforced by carbon fiber/epoxy (CF/EP) was designed and manufactured. The sandwich structure was prepared by gluing the core and composite skins.
Cui Xu, Huang Yanjiao, Wang Shou, Lu Chun, Fang Luping   +4 more
doaj   +1 more source

Influences of impurities in recycled plastics on properties of PIM sandwich panels [PDF]

, 2009
Powder impression moulding (PIM) is a novel technology for manufacturing lightweight sandwich panels from plastics in powder form. The process is featured by its high tolerant to impurities or contaminants in the feedstock and thus requires much less ...
Qi, K, Song, J, Tarverdi, K
core  

Double Rosensweig instability in a ferrofluid sandwich structure

, 2004
We consider a horizontal ferrofluid layer sandwiched between two layers of immiscible non-magnetic fluids. In a sufficiently strong vertical magnetic field the flat interfaces between magnetic and non-magnetic fluids become unstable to the formation of ...
A. G. Boudouvis, A. Gailitis, Andreas Engel, Dirk Rannacher, E. A. Kuznetsov, J.-C. Bacri, L. D. Landau, M. D. Cowley, R. E. Rosensweig, S. Rasenat, V. N. Zaitsev   +10 more
core   +1 more source

Cluster-Robust Variance Estimation for Dyadic Data [PDF]

, 2015
Dyadic data are common in the social sciences, although inference for such settings involves accounting for a complex clustering structure. Many analyses in the social sciences fail to account for the fact that multiple dyads share a member, and that ...
Aronow, Peter M., Assenova, Valentina A., Samii, Cyrus   +2 more
core   +3 more sources

Photoconductivity‐Driven Quantum Efficiency Gain in Inorganic Ruddlesden‐Popper Layered Cs2PbBr2I2 Perovskite Photodetector for Visible Light Detection

Advanced Functional Materials, EarlyView.
Rational halogen mixing strategy was employed to shift the bandgap of Cs2PbBr2I2 from ultraviolet to visible region, enabling first realization of a visible‐light photodetector with this 2D layered Ruddlesden‐Popper perovskite material. Under illumination, light‐induced internal field forms and drives trap‐mediated persistent photoconductivity ...
Md Fahim Al Fattah, Asif Abdullah Khan, Saikiran Khamgaonkar, Majid Haji Bagheri, Danyah Khan, Md Rasidul Islam, Mahmoud Almadoun, Aixi Pan, Alexander Li, Marwa Abd‐Ellah, Vivek Maheshwari, Dayan Ban   +11 more
wiley   +1 more source

Electronic structure and magnetic properties of metallocene multiple-decker sandwich nanowires

, 2011
We present a study of the electronic and magnetic properties of the multiple-decker sandwich nanowires ($CP-M$) composed of cyclopentadienyl (CP) rings and 3d transition metal atoms (M=Ti to Ni) using first-principles techniques.
C. Morari, F. Beiuşeanu, H. Allmaier, H. Allmaier, L. Chioncel, S. Sanvito, T. Jurcuţ   +6 more
core   +1 more source