Abstract: This document summarizes initial progress toward advancing the fundamental understanding of the friction, wear and mechanics of interfaces subjected to extreme electromagnetic stress, high relative velocities and elevated temperatures. During this reporting period, faculty and staff from Georgia Tech, Cornell, N.C. State and Rensselaer Polytechnic performed tasks in two thrust areas of basic research: Modeling and Experiment. With respect to the former, investigators are looking at mixed lubrication and its influence on arcing; the contact mechanics of sliding; stress waves; and the atomic mechanisms that initiate surface degradation and regeneration. For the latter, lab-scale tests that can validate the models are being developed in a manner that will permit scaling of results to a railgun application. Material deformation/melting attributes are being studied with the development of lubrication strategies to promote the successful firing of multiple railgun shots with substantially enhanced rail life.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Semiannual rept. May-Oct 2004 |
| Pages: |
18 |
| Report Date: |
OCT 2004 |
| Contract Number: |
N00014-04-1-0601 |
| Report Number: |
A578034 |
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