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Proceedings Article

Magnetorheological-suspension-based finishing technology

[+] Author Affiliations
William I. Kordonski, Donald Golini, Paul Dumas, Stephen J. Hogan

QED Technologies (USA)

Stephen D. Jacobs

Univ. of Rochester (USA)

Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, 527 (June 16, 1998); doi:10.1117/12.310670
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From Conference Volume 3326

  • Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies
  • Janet M. Sater
  • San Diego, CA | March 01, 1998

abstract

In magnetorheological finishing (MRF) the mechanical energy for material removal is generated by the hydrodynamic flow of a magnetorheological (MR) polishing suspension through a converging gap that is formed by a workpiece surface and a moving rigid wall. In addition to causing material removal, MRF also reduces the surface micro roughness of optical materials to ≤ 10 Å rms. Shape errors are corrected to a fraction of a wavelength of light and subsurface damage is removed. A theoretical analysis of MRF, based on Bingham lubrication theory, illustrates that the formation of a core attached to the moving wall results in dramatically high stress on the workpiece surface. A correlation between the shear stress on the workpiece surface and materials removal is obtained.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

William I. Kordonski ; Donald Golini ; Paul Dumas ; Stephen J. Hogan and Stephen D. Jacobs
"Magnetorheological-suspension-based finishing technology", Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, 527 (June 16, 1998); doi:10.1117/12.310670; http://dx.doi.org/10.1117/12.310670


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