Effects of temperature and thermal gradient on thermocouple psychrometer measurements

Show simple item record

dc.contributor.author Abo El Naga, Hossam en
dc.contributor.author Bouazza, A en
dc.date.accessioned 2012-03-14T22:23:47Z en
dc.date.issued 2011-02 en
dc.identifier.citation GEOTECHNIQUE 61(10):875-885 01 Oct 2011 en
dc.identifier.issn 0016-8505 en
dc.identifier.uri http://hdl.handle.net/2292/14387 en
dc.description.abstract This paper presents the results of a study aimed at assessing the effects of temperature and thermal gradient on psychrometer readings, and at developing a calibration protocol that takes into account these effects. An intensive calibration programme was conducted at different temperatures (20-35 degrees C) and water potential levels (0.0 to similar to 7.0 MPa), for this purpose. The thermal gradient was expressed as the difference in temperature between wet and dry junctions in the thermocouple psychrometer sensor. The collected calibration data were used to build an artificial neural network psychrometer model. The developed model was able to simulate successfully the psychrometer output at different conditions, and was used to conduct a detailed parametric study to evaluate the influence of temperature and thermal gradient on thermocouple psychrometer measurements. The outcome of this study shows the importance of including the effects of temperature and thermal gradient in the standard calibration process. Moreover, it introduces a new, precise calibration protocol that takes advantage of the artificial neural network approach. en
dc.language English en
dc.publisher ICE Publishing en
dc.relation.ispartofseries Geotechnique en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0016-8505/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Science & Technology en
dc.subject Technology en
dc.subject Physical Sciences en
dc.subject Engineering, Geological en
dc.subject Geosciences, Multidisciplinary en
dc.subject Engineering en
dc.subject Geology en
dc.subject monitoring en
dc.subject neural networks en
dc.subject partial saturation en
dc.subject suction en
dc.subject temperature effects en
dc.subject WATER-RETENTION en
dc.subject TOTAL SUCTION en
dc.subject HYGROMETERS en
dc.subject ERRORS en
dc.subject GEOTEXTILES en
dc.subject TESTS en
dc.subject SOILS en
dc.subject MODEL en
dc.title Effects of temperature and thermal gradient on thermocouple psychrometer measurements en
dc.type Journal Article en
dc.identifier.doi 10.1680/geot.9.p.102 en
pubs.issue 10 en
pubs.begin-page 875 en
pubs.volume 61 en
dc.rights.holder Copyright: ICE Publishing en
pubs.author-url http://www.icevirtuallibrary.com/content/article/10.1680/geot.9.p.102 en
pubs.end-page 885 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 299197 en
dc.identifier.eissn 1751-7656 en
pubs.record-created-at-source-date 2012-03-15 en

Files in this item

Find Full text

This item appears in the following Collection(s)

Show simple item record


Search ResearchSpace