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Multi-Parameter Inversion and Thermo-Mechanical Deformation Decoupling using I-DIC

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Abstract

The simultaneous and accurate identification of multiple thermo-mechanical parameters of superalloy materials in complicated service condition is an important and difficult problem. In this paper, an integrated digital image correlation (I-DIC) method was developed to address this issue. For the first time, thermo-mechanical deformation was inversed and decoupled by using I-DIC combined with an inhomogeneous high-temperature thermo-mechanical loading and optical band-pass filter imaging system. Results show that the proposed method has advantages such as high independence, short computing times, easy operation, and a small probability of error accumulation. Therefore, I-DIC is an effective and promising tool for multi-parameter inversion and thermo-mechanical deformation decoupling in practical engineering conditions.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (11232008, 11372037, and 11572041) and the Program for New Century Excellent Talents in University (NCET-12-0036).

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Authors and Affiliations

  1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China

    J. Dong & Z. Liu

  2. TWI Ltd, Granta Park, Great Abington, Cambridge, CB21 6AL, UK

    J. Gao

Authors
  1. J. Dong
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  2. Z. Liu
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  3. J. Gao
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Correspondence to Z. Liu.

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Dong, J., Liu, Z. & Gao, J. Multi-Parameter Inversion and Thermo-Mechanical Deformation Decoupling using I-DIC. Exp Mech 57, 31–39 (2017). https://doi.org/10.1007/s11340-016-0203-9

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  • DOI: https://doi.org/10.1007/s11340-016-0203-9

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