NASA-UVA Light Aerospace Alloy and Structures Technology program (LA2ST). Progress report, 1 January 1995-30 June 1995
The objective of the LA2ST Program is to conduct interdisciplinary graduate student research on the= performance of next generation, light-weight aerospace alloys, composites, and thermal gradient structures in collaboration with NASA-Langley researchers. The general aim is to produce relevant data and basic understanding of material mechanical response, environment/corrosion behavior, and microstructure; new monolithic and composite alloys; advanced processing methods; new solid and fluid mechanics analyses; measurement and modeling advances; and a pool of educated students for aerospace technologies. Specific technical objectives are presented for each of the following research projects: time-temperature dependent fracture in advanced wrought ingot metallurgy, and spray deposited aluminum alloys; cryogenic temperature effects on the deformation and fracture of Al-Li-Cu-In alloys; effects of aging and temperature on the ductile fracture of AA2095 and AA2195; mechanisms of localized corrosion in alloys 2090 and 2095; hydrogen interactions in aluminum-lithium alloys 2090 and selected model alloys; mechanisms of deformation and fracture in high strength titanium alloys (effects of temperature and hydrogen and effects of temperature and microstructure); evaluations of wide-panel aluminum alloy extrusions; Al-Si-Ge alloy development; effects of texture and precipitates on mechanical property anisotropy of Al-Cu-Mg-X alloys; damage evolution in polymeric composites; and environmental effects in fatigue life prediction - modeling crack propagation in light aerospace alloys.
- Research Organization:
- Virginia Univ., Charlottesville, VA (United States)
- OSTI ID:
- 188661
- Report Number(s):
- N-96-16572; NASA-CR-198914; NAS-1.26:198914; CNN: NAG1-745; TRN: 9616572
- Resource Relation:
- Other Information: PBD: Jul 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
FRACTURE PROPERTIES
HYDROGEN EMBRITTLEMENT
LITHIUM ALLOYS
COPPER ALLOYS
TITANIUM BASE ALLOYS
SILICON ALLOYS
MAGNESIUM ALLOYS
POLYMERS
FRACTURE MECHANICS
DUCTILITY
MICROSTRUCTURE
PRECIPITATION HARDENING
TEMPERATURE DEPENDENCE
INDIUM ALLOYS
CORROSION FATIGUE
GERMANIUM ALLOYS
PROGRESS REPORT