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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトル17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
出版社IOP Publishing Ltd.
ページ1251-1260
ページ数10
1
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2021
イベント17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
継続期間: 2021 7 182021 7 23

出版物シリーズ

名前ECS Transactions
番号1
103
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
国/地域Sweden
CityStockholm
Period21/7/1821/7/23

ASJC Scopus subject areas

  • 工学(全般)

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