Mr. Yan Bombardier Profile

Yan Bombardier

at National Research Council Canada

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Proceedings Article | 25 April 2023 Presentation + Paper

Digital twin technology development and demonstration for aircraft structural life-cycle management

Min Liao, Guillaume Renaud, Yan Bombardier

Proceedings Volume 12489, 1248906 (2023) https://doi.org/10.1117/12.2662879

KEYWORDS: Material fatigue, Damage detection, Aircraft structures, Inspection, Modeling, Failure analysis, Simulations, Monte Carlo methods, Bayesian inference, Risk assessment, Nondestructive evaluation, Tolerancing, Reliability

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This paper presents the Airframe Digital Twin (ADT) framework and key technologies for aircraft structural life-cycle management, developed by the National Research Council (NRC) of Canada, with the aim of significantly reducing maintenance cost and extending the remaining useful life of aircraft components. The NRC ADT technologies include high-fidelity structural modelling, probabilistic usage/loads forecasting, probabilistic crack growth modelling, Bayesian updating based on non-destructive inspection (NDI) results, and advanced risk/reliability analysis. To demonstrate the NRC ADT framework, a CF-188 full-scale life-extension test was used as a physical platform to simulate the remaining lifespan of an aircraft component. A series of eddy-current NDI results, obtained during the CF-188 full-scale test, were processed using a Bayesian inference algorithm to update the ADT model. The updated ADT model was then used to predict the remaining service life of the component and to determine the next inspection interval based on the acceptable probability of failure defined by risk-based airworthiness management policies. The ADT-based methods and results were compared with the existing CF-188 lifing approach, which revealed advantages and gaps of the ADT framework for the future aircraft structural life-cycle management in the digital age. This work demonstrated the unique capability of the ADT framework to quantify the effect of NDI capability and reliability, which is crucial to update the ADT model and achieve its benefits for structural life assessment and maintenance scheduling.

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