NDLI: Method and apparatus for the quantification of particulate adhesion forces on various substrates

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Method and apparatus for the quantification of particulate adhesion forces on various substrates

Content Provider	NASA Technical Reports Server (NTRS)
Author	Wohl, Christopher J. Atkins, Brad M. Connell, John W.
Copyright Year	2011
Description	Mitigation strategies for lunar dust adhesion have typically been limited to qualitative analysis. This technical memorandum describes the generation and operation of an adhesion testing device capable of quantitative assessment of adhesion forces between particulates and substrates. An aerosolization technique is described to coat a surface with a monolayer of particulates. Agitation of this surface, via sonication, causes particles to dislodge and be gravitationally fed into an optical particle counter. Experimentally determined adhesion force values are compared to forces calculated from van der Waals interactions and are used to calculate the work of adhesion using Johnson-Kendall-Roberts (JKR) theory. Preliminary results indicate that a reduction in surface energy and available surface area, through topographical modification, improve mitigation of particulate adhesion.
File Size	1773639
Page Count	21
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20110007363
Archival Resource Key	ark:/13960/t4gn36711
Language	English
Publisher Date	2011-02-01
Access Restriction	Open
Subject Keyword	Inorganic, Organic And Physical Chemistry Lunar Dust Van Der Waals Forces Topography Adhesion Tests Particulates Qualitative Analysis Surface Energy Substrates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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