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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 ...

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 ...

Impact of helmet-mounted display visor spectral characteristics on visual performance

Marasco, P.L. | Tema Archiv | 2002

, they can be used as the final element in the optical system that relays visual information to the observer. To enhance their usefulness as the ...

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 ...

In-situ observation of crystal growth in microgravity by high resolution microscopies

Katsuo Tsukamoto / Kazuo Onuma | Tema Archiv | 1991

High resolution in-situ observation methods were developed for the investigation of crystal growth mechanisms from solution phases. Crystal ...

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

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 ...

Integration of piezoceramic actuators in fiber-reinforced structures for aerospace applications

Durr, J. / Herold-Schmidt, U. / Zaglauer, H.W. et al. | Tema Archiv | 1998

Up to now experimental and theoretical research on active structures for aerospace applications has put the focus mainly on surface bonded ...

Interaction of micro-organisms (fungi and bacteria) with optical and electronic materials

Kukhtarev, N.V. / Kukhtareva, T.V. / Jones, J. et al. | Tema Archiv | 2002

for unattended and space-based optical and electronic systems. We have investigated the process of growth and distribution of fungal elements ...

Investigating the use of ultrasonic guided waves for aging wire insulation assessment

Anastasi, R.F. / Madaras, E.I. | Tema Archiv | 2002

becomes brittle and cracks. This exposes the underlying conductive wire to the potential for short circuits and fire. The difficulty is that ...

In-vivo mechanical tissue property measurement for improved simulations

Ottensmeyer, M.P. / Salisbury, J. | Tema Archiv | 2000

of appropriate training cases from which students can learn. This is especially true for battlefield surgery, as civilian hospitals may not ...

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 ...

Large zeolites - why and how to grow in space

Sacco, A. jun. | Tema Archiv | 1991

Laser-driven vehicles - from inner-space to outer-space

Yabe, T. / Phipps, C. / Aoki, K. et al. | Tema Archiv | 2002

pulses of MJ laser can give sound speed to a 10 tons airplane. The concept can also be used for driving a micro-ship inside the human body and a ...

Laser remote chemical sensors at Raytheon

Cohn, D.B. / Fukumoto, J.M. / Shepard, J.G. et al. | Tema Archiv | 2002

, angle-tuned, optical parametric oscillator wavelength shifter. The system provides for power efficiency, compactness, and light weight that are ...

Mandrel reusability in precision replication of ZnS conformal domes

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

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 ...

Measurements of optically transparent and mirrored specimens from the POSA, LDEF A0034, and EOIM-III space flight experiments

Pippin, H.G. / Finckenor, M.M. | Tema Archiv | 2002

Deposition of molecular contamination onto spacecraft surfaces changes the thermo-optical and electrical properties of those surfaces. Such ...

Measuring space radiation impact on the characteristics of optical glasses; measurement results and recommendations from testing a selected set of materials

Fruit, M. / Gusarov, A.I. / Doyle, D.B. | Tema Archiv | 2002

Radiation sensitivity of glass is a general concern for the designer of Space optical instruments. ASTRIUM, in cooperation with SCK-CEN ...

Mechanisms based on piezo actuators