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

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• 作者：J. Dong ; Z. Liu ; J. Gao
• 关键词：Inverse problems ; High temperature measurement ; Thermo ; mechanical analysis ; Integrated digital image correlation ; Optomechanics
• 刊名：Experimental Mechanics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：57
• 期：1
• 页码：31-39
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Continuum Mechanics and Mechanics of Materials; Characterization and Evaluation of Materials; Optics, Lasers, Photonics, Optical Devices; Structural Mechanics; Vibration, Dynamical Systems, Control; C
• 出版者：Springer US
• ISSN：1741-2765
• 卷排序：57

文摘

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.