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Optical Engineering

Estimating particle redistribution from launch loads
Author(s): Russell A. Crook
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Paper 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.

Paper Details

Date Published: 1 May 2006
PDF: 8 pages
Opt. Eng. 45(5) 059001 doi: 10.1117/1.2205782
Published in: Optical Engineering Volume 45, Issue 5
Show Author Affiliations
Russell A. Crook, Eastman Kodak Co. (United States)

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