Computer Science
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aubu.rept.....h&link_type=abstract
Final Report, 1 Jan. 1993 - Dec. 1994 Auburn Univ., AL. Space Power Inst.
Computer Science
Assessments, Computerized Simulation, Debris, Hypervelocity Impact, Impact Damage, Impact Tests, Long Duration Exposure Facility, Metal Surfaces, Meteoritic Damage, Research Projects, Spacecraft Construction Materials, Impactors, Meteorite Collisions, Residues, Scanning Electron Microscopy, Size Distribution, Spacecraft Design, Structural Members, Test Facilities, Velocity Measurement, X Ray Spectroscopy
Scientific paper
The analysis of exposed surfaces on LDEF since its retrieval in 1990 has revealed a wide range of meteoroid and debris (M&D) impact features in the sub-micron to millimeter size range, ranging from quasi-infinite target cratering in LDEF metallic structural members (e.g. inter-costals, tray clamps, etc.) to non-marginal perforations in metallic experimental surfaces (e.g. thin foil detectors, etc.). Approximately 34,000 impact features are estimated to exist on the exposed surfaces of LDEF. The vast majority of impact craters in metal substrates exhibit circular footprints, with approximately 50 percent retaining impactor residues in varying states of shock processing. The fundamental goals of this project were to duplicate and analyze meteoroid impact damage on spacecraft metallic materials with a view to quantifying the residue retention and oblique impact morphology characteristics. Using the hypervelocity impact test facility established at Auburn University a series of impact tests (normal and oblique incidence) were executed producing consistently high (11-12 km/s) peak impact velocities, the results of which were subsequently analyzed using Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDXS) facilities at Auburn University.
Hill David C.
Rose Frank M.
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