NASA Scientific and Technical Aerospace Reports

demonstrate that operations performed in the DTF and RF meet the nuclear criticality safety design criteria.
NTIS
Drying; Radioactive Wastes; Safety; Barrels (Containers); Functionals
20060002437 Department of Energy, Washington, DC USA
Electric Boosting System for Light Truck/SUV Application
Arnold, S.; Balis, C.; Barthelet, P.; Poix, E.; Jun. 22, 2005; 54 pp.; In English
Report No.(s): DE2005-841240; No Copyright; Avail.: National Technical Information Service (NTIS)
Turbo diesel engine use in passenger cars in Europe has resulted in 30-50% improvement in fuel economy. Diesel engine
application is particularly suitable for U.S. because of vehicle size and duty cycle patterns. Adopting this technology for use
in the U.S. presents two issues--emissions and driveability. Emissions reduction technology is being well addressed with
advanced turbocharging, fuel injection and catalytic aftertreatment systems. One way to address driveability is to eliminate
turbo lag and increase low speed torque. Electrically assisted turbocharging concepts incorporated in e-TurboTM designs do
both. The purpose of this project is to design and develop an electrically assisted turbocharger, e-TurboTM, for diesel engine
use in the USA.
NTIS
AC Generators; Automobiles; Compressors; Diesel Engines; Trucks
39
STRUCTURAL MECHANICS
Includes structural element design, analysis and testing; dynamic responses of structures; weight analysis; fatigue and other structural
properties; and mechanical and thermal stresses in structures. For applications see 05 Aircraft Design, Testing and Performance; and
18 Spacecraft Design, Testing and Performance.
20060000014 University Transportation Center for Alabama, Tuscaloosa, AL, USA
Development of a Transducer for Measuring Tensile Strains in Concrete Bridge Girders
Richardson, J.; Triche, M.; Skelton, S.; Jun. 30, 2005; 30 pp.; In English
Report No.(s): PB2006-101237; UTCA-03402; No Copyright; Avail.: CASI: A03, Hardcopy
This report describes the design and testing of a transducer for measuring tensile strains in reinforced concrete bridge
girders. This transducer was desired by the Alabama Department of Transportation (ALDOT) Bridge Rating and Load Test
Section for performing load tests on reinforced concrete highway bridges. ALDOT began its bridge testing program over 15
years ago and successfully removed load restrictions from nearly 100 steel girder bridges. The procedure used by ALDOT (and
other bridge testers, typically), is to measure the flexural strains in the bridge due to known truck loads. Flexural strains can
easily be measured in steel girders using electrical resistance strain gages. Such gages cannot accurately measure tensile strains
in reinforced concrete girders because of the presence of flexural micro-cracks. The purpose of this project was to develop a
transducer to measure tensile strains in reinforced concrete bridge girders. The transducer design was based on the experience
of ALDOT and the authors with earlier versions of the strain transducer. This report summarizes the literature on methods of
measuring bridge response during load tests, describes the transducer design process, and presents results from laboratory and
field testing of a prototype of the final transducer design.
NTIS
Concretes; Girders; Transducers; Bridges (Structures)
43
EARTH RESOURCES AND REMOTE SENSING
Includes remote sensing of earth features, phenomena and resources by aircraft, balloon, rocket, and spacecraft; analysis of remote
sensing data and imagery; development of remote sensing products; photogrammetry; and aerial photography. For related
instrumentation see 35 Instrumentation and Photography.
20060001846 Army Research Lab., Aberdeen Proving Ground, MD USA
A Survey of Photon Mapping for Realistic Image Synthesis
Shumaker, Justin L.; Sep. 1, 2005; 26 pp.; In English
Contract(s)/Grant(s): Proj-1L162618AH80
Report No.(s): AD-A440370; ARL-TR-3608; No Copyright; Avail.: Defense Technical Information Center (DTIC)
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