ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
As widely-used methods to measure metallic resistivities, Four-terminal method, van derPauw method, Four-Point Probe(FPP) method and eddy current method were compared and analysedto find the method with lowest uncertainty and accurate method for applying nondestructively toindustry. STS 316, non-magnetic metal is used as sample for the four methods. Conductivity ratios bythe four-terminal method and van der Pauw method had the lowest uncertainty of 0.25 % and theratios by the FPP method had measurement uncertainty of 0.45 % when probe spacing was more thantwo times of sample thickness and dc 10 A is applied. Also, the ratio values by the eddy currentmethod had 1 % or more difference from the four-terminal or van der Pauw method and measurementuncertainty was obtained as 0.93 %. From the results, former two methods had the lowest uncertaintybut are destructive methods so that those are difficult to apply to the field of industry. The FPP methodis an accurate and nondestructive measurement method so that it can be used in the field. The eddycurrent method is one of nondestructive method but it has the highest uncertainty and low accuracy
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.1465.pdf
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