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At the International Space Station (ISS) Mission Control Center, flight controllers and mission support staff utilize a large number of web-based applications to perform mission operations and crew support tasks. Although access to these applications is through a common web portal, they are separate systems, developed independently and in isolation from one another. To integrate information across...
Annealed thin metal films on Si substrates often show early yielding behavior, similar to the well-known Bauschinger effect in bulk metals, during thermomechanical cycling. Small amounts of oxygen added to a Cu film dramatically enhance early yielding, and lead to extensive plastic deformation at zero stress and increasing stress with temperature during heating. These anomalous plastic deformation...
In situ and post-mortem transmission electron microscopy (TEM) observations of thermally cycled Al thin films have been made to identify and characterize the deformation mechanisms that govern the thermo-mechanical response of these films. The early stages of thermal cycling were associated with grain growth, untangling and motion of low angle boundaries and the absorption of dislocations into the...
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