期刊
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
卷 29, 期 23, 页码 2515-2520出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/01694243.2015.1072775
关键词
Wilhelmy; tensiometer; contact angles; uncertainty; error propagation
The uncertainty in contact angles from the Wilhelmy tensiometer was analyzed using standard error propagation techniques involving partial derivatives across the full range of wettability, from completely wetting to non-wetting surfaces. Uncertainties in force, sample perimeter, and liquid surface tension of 1% were shown to yield uncertainty in contact angles of a few degrees over the middle range of wettability, but exceeded 10 degrees at the extremes.
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