Magnetorheological-suspension-based finishing technology

William I. Kordonski; Donald Golini; Paul Dumas; Stephen J. Hogan; Stephen D. Jacobs

doi:10.1117/12.310670

16 June 1998 Magnetorheological-suspension-based finishing technology

William I. Kordonski, Donald Golini, Paul Dumas, Stephen J. Hogan, Stephen D. Jacobs

Proceedings Volume 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies; (1998) https://doi.org/10.1117/12.310670
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

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.

Citation Download 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, (16 June 1998); https://doi.org/10.1117/12.310670

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