Measurement Science and Technology · 2002 · 11 citations · 13 references
EngineeringMaterials EngineeringBiomedical ImagingUltrasonographyUltrasoundExtrusion ProcessingMaterial ExtrusionMedical ImagingScanning TechniquesDiscretizationElectrical ImpedanceElectrical Impedance TomographyExtrudabilityExtrusionMoisturePaste CharacterizationSmoothing
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.
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Inverse problems with structural prior information
Jari P. Kaipio, Ville Kolehmainen, Marko Vauhkonen et al. · Inverse Problems · 1999 · 253 citations
Computing, Biomedical Engineering, Electrical Engineering +17
Electrical impedance tomography with basis constraints
Marko Vauhkonen, Jari P. Kaipio, Erkki Somersalo et al. · Inverse Problems · 1997 · 113 citations
Engineering, Biomedical Engineering, Electrical Engineering +15