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dc.contributor.authorSafa, Yasser-
dc.contributor.authorHocker, Thomas-
dc.contributor.authorPrestat, Michel-
dc.contributor.authorEvans, Anna-
dc.date.accessioned2017-11-30T15:01:16Z-
dc.date.available2017-11-30T15:01:16Z-
dc.date.issued2014-03-15-
dc.identifier.issn0378-7753de_CH
dc.identifier.issn1873-2755de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/1634-
dc.description.abstractThe buckling behavior of a thin-film electrolyte of a micro-solid oxide fuel cell is investigated based on experimental measurements, analytical estimations and numerical simulations. An energy minimization procedure is applied in combination with the Rayleigh-Ritz method to represent the buckling modes, evaluate the buckling amplitude and determine the threshold values for instability transitions in the system. The residual stresses in the film deposited on a silicon substrate are evaluated based on wafer curvature whereby nanoindentations tests are applied to estimate the Young's modulus of the deposited film. The partial release of residual stresses in the film during free etching of the substrate is estimated by a new method combining pre-etching optical measurements with posteriori stress analysis. The energy interpretation of the obtained deflection shape is discussed. Comparisons between simulation results and experimental data show the efficiency of this method to predict various buckling stages of free-standing thin films. A post-buckling design space for thin-film electrolyte fabrication is presented by applying a stress-based failure criterion.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofJournal of Power Sourcesde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject.ddc540: Chemiede_CH
dc.subject.ddc621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnikde_CH
dc.titlePost-buckling design of thin-film electrolytes in micro-solid oxide fuel cellsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
dc.identifier.doi10.1016/j.jpowsour.2013.10.125de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end342de_CH
zhaw.pages.start332de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume250de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Safa, Y., Hocker, T., Prestat, M., & Evans, A. (2014). Post-buckling design of thin-film electrolytes in micro-solid oxide fuel cells. Journal of Power Sources, 250, 332–342. https://doi.org/10.1016/j.jpowsour.2013.10.125
Safa, Y. et al. (2014) ‘Post-buckling design of thin-film electrolytes in micro-solid oxide fuel cells’, Journal of Power Sources, 250, pp. 332–342. Available at: https://doi.org/10.1016/j.jpowsour.2013.10.125.
Y. Safa, T. Hocker, M. Prestat, and A. Evans, “Post-buckling design of thin-film electrolytes in micro-solid oxide fuel cells,” Journal of Power Sources, vol. 250, pp. 332–342, Mar. 2014, doi: 10.1016/j.jpowsour.2013.10.125.
SAFA, Yasser, Thomas HOCKER, Michel PRESTAT und Anna EVANS, 2014. Post-buckling design of thin-film electrolytes in micro-solid oxide fuel cells. Journal of Power Sources. 15 März 2014. Bd. 250, S. 332–342. DOI 10.1016/j.jpowsour.2013.10.125
Safa, Yasser, Thomas Hocker, Michel Prestat, and Anna Evans. 2014. “Post-Buckling Design of Thin-Film Electrolytes in Micro-Solid Oxide Fuel Cells.” Journal of Power Sources 250 (March): 332–42. https://doi.org/10.1016/j.jpowsour.2013.10.125.
Safa, Yasser, et al. “Post-Buckling Design of Thin-Film Electrolytes in Micro-Solid Oxide Fuel Cells.” Journal of Power Sources, vol. 250, Mar. 2014, pp. 332–42, https://doi.org/10.1016/j.jpowsour.2013.10.125.


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