Experimental Study of Drag Resistance Using a Laboratory Scale Rotary Set-up

This work covers an experimental study of the drag resistance of different painted surfaces and simulated large-scale irregularities, viz. dry spraying, weld seams, barnacle fouling and paint remains. A laboratory scale rotary set-up was used to determine the drag resistance, and the surface roughne...

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Bibliographic Details
Published in:Biofouling (Chur, Switzerland) Switzerland), 2003-04, Vol.19 (sup1), p.45-51
Main Authors: Weinell, Claus E, Olsen, Kenneth N, Christoffersen, Martin W, Kiil, Søren
Format: Article
Language:English
Subjects:
Antifouling Paint
Applied sciences
Coatings. Paints, varnishes and inks
Drag Resistance
Exact sciences and technology
Film formation and curing, properties, testing
Friction
Materials Testing
Paint
Polymer industry, paints, wood
Rotary Set-up
Roughness
Seawater
Ship Hull Irregularities
Ships
Silicone Paint
Surface Properties
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Summary:This work covers an experimental study of the drag resistance of different painted surfaces and simulated large-scale irregularities, viz. dry spraying, weld seams, barnacle fouling and paint remains. A laboratory scale rotary set-up was used to determine the drag resistance, and the surface roughness of the samples was determined by means of two different stylus-based methods, one having a 1.6 mm ball stylus (giving the macro-roughness) and the other having a needle type stylus (giving the micro-roughness). It is demonstrated that, in the case of ideal painted surfaces (low macro-roughness), the micro-roughness is much more important than the macro-roughness. On the other hand, the study also indicates that larger scale irregularities have a much greater influence on the drag resistance compared to measurements of the paint system alone.
ISSN:0892-7014
1029-2454
DOI:10.1080/0892701031000072118