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Electrical Capacitance Tomography for Condition Monitoring During the Regeneration of Reclaimed Foundry Sand

Title data

Fischerauer, Alice ; Kandlbinder-Paret, Christoph ; Fischerauer, Gerhard:
Electrical Capacitance Tomography for Condition Monitoring During the Regeneration of Reclaimed Foundry Sand.
In: Soleimani, Manuch , International Society for Industrial Process Tomography (ISIPT) (ed.): Proceedings of the 9th World Congress on Industrial Process Tomography (WC-IPT-9). - Bath, UK : International Society for Industrial Process Tomography , 2018 . - pp. 847-856 . - (ISIPT World Congress on Industrial Process Tomography (ISSN 2309-3870) ; 9 )

Abstract in another language

There exists a strong demand for moulding sand for the production of cast components. New sand, which is the basic material of moulding sands and core sands, has therefore become quite an expensive raw material. In addition, suitable landfills for the deposition of used sands are getting scarce. Foundries therefore strive for an efficient regeneration of used sands with minimal energy cost.
This can be achieved by monitoring the sand condition during processing and making the process control respond to the collected data. Suitable quantities for this condition monitoring are the electrical conductivity and the relative permittivity. These material parameters in turn determine the impedance of a sand sample of defined geometry. We have investigated if the impedance spectra of sand samples feature enough details to serve as indicators for the sand condition. As a consequence, we propose and evaluate an in-situ measuring system utilizing electrical capacitance tomography (ECT) on measurement objects that are no good insulators. The attention focuses on extracting
characteristic features from the ECT reconstruction results rather than an exact determination of material parameter distributions. The method appears to have the potential of being a solution to the problem of non-invasive in-situ sand condition monitoring.

Further data

Item Type: Article in a book
Refereed: No
Keywords: Casting; sands; electrical capacitance tomography; image reconstruction
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 28 Sep 2018 06:52
Last Modified: 28 Sep 2018 06:52
URI: https://eref.uni-bayreuth.de/id/eprint/45912