Estimating particle redistribution from launch loads

Russell A. Crook

doi:10.1117/1.2205782

1 May 2006 Estimating particle redistribution from launch loads

Russell A. Crook

Author Affiliations +

Optical Engineering, Vol. 45, Issue 5, 059001 (May 2006). https://doi.org/10.1117/1.2205782

Abstract

The development of a simple particle redistribution model for estimating the effect on surface obscuration after particle shed from a neighboring surface during random vibration is discussed. The model uses both spherical and elliptical particles and existing failure data of glass spheres on a metal surface to estimate the critical body force to cause the particles to release from the surface. The resulting obscuration from shedding particles on the shedding surface can then be added to the receiving surface. The model assumes that the force due to gravity exceeds the buoyancy force from venting. Because the redistribution analysis shows that particles 80 µm and larger will shed, and particles 60 µm and larger are verifiable using Visually Clean-II (VC-II) conditions, highly reflective surfaces cleaned to a VC-II level will pose little threat to neighboring surfaces from redistribution at 6-g quasi-static loading.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Russell A. Crook "Estimating particle redistribution from launch loads," Optical Engineering 45(5), 059001 (1 May 2006). https://doi.org/10.1117/1.2205782

Published: 1 May 2006

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