NASA Scientific and Technical Aerospace Reports

Ultrasound is arguably the most effective nondestructive testing method for the inspection of subsurface faults. However,
hand scanning of parts is subject to inspector error and fatigue, and automated point-by-point is extremely time consuming.
We are reporting on the results of the use of a novel ultrasound camera for the rapid inspection of composite rocket motor cases
in both production and in- service settings. This camera technology can be used for a variety of materials of different sizes
and geometries. Using this system, subsurface delaminations, voids, cracks and other faults can be seen with high resolution
and quantified immediately. This technique results in scans that can be done several times faster than conventional
point-by-point or hand scanning.
DTIC
Cameras; Composite Structures; Inspection; Real Time Operation; Rocket Engines; Ultrasonics
20040073807 Naval War Coll., Newport, RI
Operational Infrastructure Development: A Critical Factor in the Global War on Terrorism
Bowers, William J.; Feb. 9, 2004; 30 pp.; In English; Original contains color illustrations
Report No.(s): AD-A422825; No Copyright; Avail: CASI; A03, Hardcopy
Operational infrastructure development is the construction and establishment of roads, airfields, ports, installations,
communications systems, hospitals, schools, irrigation systems, and water treatment systems by operational- level military
commands. For several reasons, it has become a decisive operational concept in the global war on terrorism (GWOT). As the
USA confronts failed states, quasi- failed states, and rogue dictatorships that threaten its national security, there is a
requirement for operational commanders to focus on operational infrastructure development. In the first two years of the
GWOT, three models of operational infrastructure development have blossomed: the facilitative, creative, and reconstructive
models. The first is the facilitative model employed by Joint Task Force (JTF) 510 on Basilan Island in the Republic of the
Philippines. The second is the creative model led by Combined Joint Task Force (CJTF) 180 in Afghanistan. The third is the
reconstructive model now ongoing in Iraq, commanded by CJTF-7 and the Coalition Provisional Authority (CPA). This paper
argues that these campaigns show that operational infrastructure development is a critical factor in the GWOT, and should be
planned for by operational commanders and integrated into joint doctrine. (37 refs.)
DTIC
Armed Forces (United States); Structural Engineering; Terrorism; Warfare
20040074202 Ohio State Univ., Columbus, OH, USA
High Strain-Rate and Temperature Effects on the Response of Composites
Gilat, Amos; May 2004; 19 pp.; In English
Contract(s)/Grant(s): NCC3-1027; OSURF Proj. 744258; No Copyright; Avail: CASI; A03, Hardcopy
The objective of the research is to expand the experimental study of the effect of strain rate on mechanical response
(deformation and failure) of epoxy resins and carbon fibers/epoxy matrix composites, to include elevated temperature tests.
The experimental data provide the information needed for NASA scientists for the development of a nonlinear, strain rate and
temperature dependent deformation and strength models for composites that can subsequently be used in design. This year
effort was directed into the development and testing of the epoxy resin at elevated temperatures. Two types of epoxy resins
were tested in shear at high strain rates of about 700 per second and elevated temperatures of 50 and 80 C. The results show
that the temperature significantly affects the response of epoxy.
Derived from text
Strain Rate; Temperature Effects; Mechanical Properties; Composite Materials; High Temperature Tests
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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.
20040070799 Lockheed Martin Space Operations, Bay Saint Louis, MS, USA
Commercial Systems Validation Overview
Ryan, Robert; April 30, 2001; 52 pp.; In English
Report No.(s): SE-2001-04-00020-SSC; No Copyright; Avail: CASI; A04, Hardcopy
The Commercial Systems Validation Laboratory (CSVL) is composed of the 1) Virtual Product Laboratory (VPL), 2)
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