Abstract
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 so 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 three-dimensional field modelling. These
provide clear images of the paste that can be used to gauge extrudability of a
paste formulation.
image paste during extrusion. This indicates regions of high moisture at the
wall of the barrel permitting slip and so 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 three-dimensional field modelling. These
provide clear images of the paste that can be used to gauge extrudability of a
paste formulation.
| Original language | English |
|---|---|
| Pages (from-to) | 1890-1897 |
| Number of pages | 8 |
| Journal | Measurement Science and Technology |
| Volume | 13 |
| Publication status | Published - 1 Nov 2002 |