A Pegasus Dynamic Liner Friction Experiment

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The authors report on a pulsed power experiment performed at the Los Alamos National Laboratory Pegasus facility which was designed to measure material flow at metal interfaces driven to high relative velocities. Material motion at and near four flat Ta/Al(6061) interfaces was measured using flash radiographic techniques. A series of fine Pb wires (407 micron diameter) was implanted in the Al normal to the interfaces. The motion of these markers under shock loading provided a picture of material motion in the Al interfacial region. The surface roughness of the interfaces was varied between 32 and 125 micro-inches. The authors discuss ... continued below

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Hammerberg, J.E.; Kyrala, G.A.; Oro, D.M.; Fulton, R.D.; Anderson, W.E.; Obst, A.W. et al. June 28, 1999.

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Description

The authors report on a pulsed power experiment performed at the Los Alamos National Laboratory Pegasus facility which was designed to measure material flow at metal interfaces driven to high relative velocities. Material motion at and near four flat Ta/Al(6061) interfaces was measured using flash radiographic techniques. A series of fine Pb wires (407 micron diameter) was implanted in the Al normal to the interfaces. The motion of these markers under shock loading provided a picture of material motion in the Al interfacial region. The surface roughness of the interfaces was varied between 32 and 125 micro-inches. The authors discuss the implications of these measurements for constitutive models of high speed friction and interfacial morphological change.

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Medium: P; Size: vp.

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INIS; OSTI as DE00760836

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  • APS Conference on Shock Compression of Condensed Matter, Snowbird, UT (US), 06/28/1999--06/30/1999

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  • Report No.: LA-UR-99-3378
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 760836
  • Archival Resource Key: ark:/67531/metadc725678

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  • June 28, 1999

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  • Sept. 29, 2015, 5:31 a.m.

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  • May 6, 2016, 2:51 p.m.

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Hammerberg, J.E.; Kyrala, G.A.; Oro, D.M.; Fulton, R.D.; Anderson, W.E.; Obst, A.W. et al. A Pegasus Dynamic Liner Friction Experiment, article, June 28, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc725678/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.