Multifidelity methods are introduced to the nondestructive evaluation (NDE) of measurement systems. In particular, Cokriging interpolation metamodels of physics-based ultrasonic testing (UT) simulation responses are utilized to accelerate the uncertainty propagation in model-assisted NDE. The proposed approach is applied to a benchmark test case of UT simulations and compared with the current state-of-the-art techniques. The results show that Cokriging captures the physics of the problem well and is able to reduce the computational burden by over one order of magnitude compared to the state of the art. To the best of the author's knowledge, this the first time multifidelity methods are applied to model-assisted NDE problems.
L. Leifsson et al., "Multifidelity Modeling of Ultrasonic Testing Simulations with Cokriging," 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2018, article no. 8503399, Institute of Electrical and Electronics Engineers, IEEE, Oct 2018.
The definitive version is available at https://doi.org/10.1109/NEMO.2018.8503399
Mechanical and Aerospace Engineering
Keywords and Phrases
Cokriging; Kriging; Metamodeling; Nondestructive evaluation; Polynomial chaos expansions; Simulations; Ultrasonic testing
International Standard Book Number (ISBN)
Article - Conference proceedings
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23 Oct 2018
Iowa State University, Grant None