In situ imaging of paste extrusion using electrical impedance tomography

A case study is presented where electrical impedance tomography is used to image paste during extrusion. This indicates regions of high moisture at the wall of the barrel permitting slip and thus making extrusion more efficient. Multi-step Gauss-Newton image reconstruction methods are used. Techniqu...

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Bibliographic Details
Published inMeasurement science & technology Vol. 13; no. 12; pp. 1890 - 1897
Main Authors West, Robert M, Scott, David M, Sunshine, Gregg, Kostuch, Jacek, Heikkinen, Lasse, Vauhkonen, Marko, Hoyle, Brian S, Schlaberg, H Inaki, Hou, Ruozhou, Williams, Richard A
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2002
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Summary:A case study is presented where electrical impedance tomography is used to image paste during extrusion. This indicates regions of high moisture at the wall of the barrel permitting slip and thus making extrusion more efficient. Multi-step Gauss-Newton image reconstruction methods are used. Techniques include (i) axi-symmetric smoothing that is coupled with ultrasound measurement to provide discretization information, (ii) full impedance imaging and (iii) full 3D field modeling. These provide clear images of the paste that can be used to gauge extrudability of a paste formulation. (Author)
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/13/12/312