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Mechanical Characteristics of Electrolytes Assessed with Resonant Ultrasound Spectroscopy.

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Title: Mechanical Characteristics of Electrolytes Assessed with Resonant Ultrasound Spectroscopy.
Authors: Araki, W.1,2, Azuma, H.1, Yota, T.1, Arai, Y.1, Malzbender, J.2
Source: Fuel Cells. Aug2013, Vol. 13 Issue 4, p542-548. 7p.
Subjects: Electrolytes, Resonant ultrasound spectroscopy, Solid oxide fuel cells, Residual stresses, Young's modulus, Poisson's ratio
Abstract: Elastic properties and residual stresses are critical for the assessment of the reliability of ceramics components. The thin electrolyte layer of anode supported SOFCs is under a state of high compressive residual stress. In the present study, the elastic properties of this layer as well as the residual stress distribution induced in the anode-supported planar SOFC cell were examined by using the resonant ultrasound spectroscopy (RUS). A modal analysis by finite element simulation demonstrated that the RUS has a great potential to determine these mechanical characteristics. The Young's modulus can be determined from the natural frequencies of the layered sample whilst the residual stress can be determined using the sample with a semi-hole. Estimates of the Poisson's ratio are possible. In the experiment, various individual resonant oscillations were successfully identified using the present RUS system. Hence, by comparison of experimental results and simulations, the elastic properties as well as the residual stress were obtained. Although the proposed method is still experimentally challenging, it could be developed to become a powerful tool to simultaneously determine residual stresses and elastic constants of thin-layered systems. [ABSTRACT FROM AUTHOR]
Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Mechanical Characteristics of Electrolytes Assessed with Resonant Ultrasound Spectroscopy.
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  Data: <searchLink fieldCode="JN" term="%22Fuel+Cells%22">Fuel Cells</searchLink>. Aug2013, Vol. 13 Issue 4, p542-548. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Electrolytes%22">Electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Resonant+ultrasound+spectroscopy%22">Resonant ultrasound spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+oxide+fuel+cells%22">Solid oxide fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Residual+stresses%22">Residual stresses</searchLink><br /><searchLink fieldCode="DE" term="%22Young's+modulus%22">Young's modulus</searchLink><br /><searchLink fieldCode="DE" term="%22Poisson's+ratio%22">Poisson's ratio</searchLink>
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  Data: Elastic properties and residual stresses are critical for the assessment of the reliability of ceramics components. The thin electrolyte layer of anode supported SOFCs is under a state of high compressive residual stress. In the present study, the elastic properties of this layer as well as the residual stress distribution induced in the anode-supported planar SOFC cell were examined by using the resonant ultrasound spectroscopy (RUS). A modal analysis by finite element simulation demonstrated that the RUS has a great potential to determine these mechanical characteristics. The Young's modulus can be determined from the natural frequencies of the layered sample whilst the residual stress can be determined using the sample with a semi-hole. Estimates of the Poisson's ratio are possible. In the experiment, various individual resonant oscillations were successfully identified using the present RUS system. Hence, by comparison of experimental results and simulations, the elastic properties as well as the residual stress were obtained. Although the proposed method is still experimentally challenging, it could be developed to become a powerful tool to simultaneously determine residual stresses and elastic constants of thin-layered systems. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/fuce.201200161
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 542
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      – SubjectFull: Electrolytes
        Type: general
      – SubjectFull: Resonant ultrasound spectroscopy
        Type: general
      – SubjectFull: Solid oxide fuel cells
        Type: general
      – SubjectFull: Residual stresses
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      – SubjectFull: Young's modulus
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      – SubjectFull: Poisson's ratio
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      – TitleFull: Mechanical Characteristics of Electrolytes Assessed with Resonant Ultrasound Spectroscopy.
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              Text: Aug2013
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