Comparison of residual stress measurement methods in solid oxide fuel cell

K. Oshima, T. Komaya, K. Yashiro, Fumitada Iguchi, M. Han, Y. Wang, T. Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We performed in-situ measurement of residual stress in an anodesupported cell using sin2ψ method, cosα method and Raman scattering spectroscopy. Residual stress at room temperature was evaluated by the sin2ψ method, cosα method, and simulation. The stress values were generally consistent among the methods, with YSZ having a compressive stress of around 600 MPa. Residual stress analysis at high temperatures was attempted using Raman scattering spectroscopy which, however, was difficult to be applied above 700 C. Instead, cosα method was successfully utilized for the measurement of residual stress during the temperature rise, reduction, and re-oxidation processes. The stress on the electrolyte observed during reduction and re-oxidation was different from that expected with a simple assumption of layered homogeneous sheets. These results showed that the cosα method is the most suitable method for in-situ measurements to validate simulated stress states.

Original languageEnglish
Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PublisherIOP Publishing Ltd.
Pages1251-1260
Number of pages10
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2021
Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Duration: 2021 Jul 182021 Jul 23

Publication series

NameECS Transactions
Number1
Volume103
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/TerritorySweden
CityStockholm
Period21/7/1821/7/23

ASJC Scopus subject areas

  • Engineering(all)

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