Determination of uncertainty of measurement for penetration testing

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dc.contributor.author O'Connell, J.
dc.contributor.author Mturi, G.A.J.
dc.contributor.other Southern African Transport Conference (30th : 2011 : Pretoria, South Africa)
dc.contributor.other Transportation Research Board of the National Academies (TRB)
dc.contributor.other Minister of Transport, South Africa
dc.contributor.upauthor Maina, J.W. (James)
dc.date.accessioned 2011-09-26T12:21:25Z
dc.date.available 2011-09-26T12:21:25Z
dc.date.issued 2011-07
dc.description This paper was transferred from the original CD ROM created for this conference. The material was published using Adobe Acrobat 10.1.0 Technology. The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: nigel@doctech URL: http://www.doctech.co.za en_US
dc.description.abstract Paper presented at the 30th Annual Southern African Transport Conference 11-14 July 2011 "Africa on the Move", CSIR International Convention Centre, Pretoria, South Africa. en_US
dc.description.abstract Any measurement has an error associated with it. The parameter that quantifies the boundaries of the error of that measurement is known as the uncertainty of measurement. Without determining the uncertainty of measurement, any measurement lacks merit. An assessment of uncertainty of measurement is carried out for the standard test method for penetration of bituminous materials as prescribed by ASTM D5. The assessment of uncertainty of measurement is performed using the principles stated in the IS0 Guide to the Expression of Uncertainty in Measurement (IS0 GUM). A model was formulated for the purposes of determining the uncertainty of measurement, incorporating the equipment (based in the advanced testing laboratories at the CSIR), environment and test procedure. Sources of measurement variation were identified and isolated within the model. Furthermore, these sources were classified as either random or systematic, as well as whether they were subject to type A or type B analyses. Experimental processes quantified the various sources of uncertainty and an overall uncertainty of measurement was calculated for the test method. This paper illustrates how IS0 GUM may be applied to determine the accuracy of the penetration test method. The results can be used to refine the penetration test procedure and tighten up on equipment specifications in order to reduce the level of test uncertainty. In addition, this paper may serve as an example of how to extend IS0 GUM to other laboratory test methods. en_US
dc.description.sponsorship CD sponsored by TRANSNET en_US
dc.format.extent 9 pages en_US
dc.format.medium PDF en_US
dc.identifier.citation O'Connell J, Mturi GAJ & Maina J 2011, 'Determination of uncertainty of measurement for penetration testing.', Paper presented to the 30th Annual Southern African Transport Conference, South Africa, 11-14 July. pp. 46-54 en_US
dc.identifier.isbn 9781920017514
dc.identifier.uri http://hdl.handle.net/2263/17294
dc.language.iso en en_US
dc.publisher Document Transformation Technologies en_US
dc.relation.ispartof SATC 2011
dc.rights University of Pretoria en_US
dc.subject Measurement error en_US
dc.subject ASTM D5 en_US
dc.subject ISO GUM en_US
dc.subject.lcsh Transportation
dc.subject.lcsh Transportation -- Africa en
dc.subject.lcsh Transportation -- Southern Africa
dc.title Determination of uncertainty of measurement for penetration testing en_US
dc.type Presentation en_US


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