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High quality reconstruction of insufficient tomographic data by a new iterative procedure

  • In order to demonstrate the challenging tasks in current R&D applications in the field of renewable energy sources experimental neutron and electron tomographic data sets of PEM fuel cell components are processed by an advanced version of the DIRECTT algorithm. The neutron measurements of the water distribution suffer from several intrinsic limitations such as massive position dependent focal smearing due to the large primary neutron beam aperture. Electron (TEM) tomography allows characterisation of nanometre sized catalyst particles but is hampered by the following restrictions: partial opacity, a limited sector of projections (missing wedge), very few projections, samples exceeding the detector size (region of interest) and improper angular alignment. Beyond the capabilities of other algorithms DIRECTT proves to overcome these essential reconstruction problems, in comparison to FBP and SIRT. Nevertheless, careful data pre-processing is an inevitable requirement in order to fullyIn order to demonstrate the challenging tasks in current R&D applications in the field of renewable energy sources experimental neutron and electron tomographic data sets of PEM fuel cell components are processed by an advanced version of the DIRECTT algorithm. The neutron measurements of the water distribution suffer from several intrinsic limitations such as massive position dependent focal smearing due to the large primary neutron beam aperture. Electron (TEM) tomography allows characterisation of nanometre sized catalyst particles but is hampered by the following restrictions: partial opacity, a limited sector of projections (missing wedge), very few projections, samples exceeding the detector size (region of interest) and improper angular alignment. Beyond the capabilities of other algorithms DIRECTT proves to overcome these essential reconstruction problems, in comparison to FBP and SIRT. Nevertheless, careful data pre-processing is an inevitable requirement in order to fully exploit the algorithm's potentials.zeige mehrzeige weniger

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Metadaten
Autor*innen:Andreas KupschORCiD, Axel Lange, Manfred P. Hentschel, R. Grothausmann, Tobias Arlt, I. Manke
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):18th WCNDT - World conference on nondestructive testing (Proceedings)
Jahr der Erstveröffentlichung:2012
Erste Seite:1
Letzte Seite:8(?)
Freie Schlagwörter:DIRECTT; Electron tomography; Focal smearing; Fuel cell; Iterative reconstruction; Limited View; Neutron tomography; Opacity; Renewable energy
Veranstaltung:18th WCNDT - World conference on nondestructive testing
Veranstaltungsort:Durban, South Africa
Beginndatum der Veranstaltung:2012-04-16
Enddatum der Veranstaltung:2012-04-20
URL:http://www.ndt.net/article/wcndt2012/papers/207_wcndtfinal00207.pdf
ISBN:978-0-620-52872-6
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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