Data-driven damage model based on nondestructive evaluation
journal contributionposted on 2018-05-14, 14:10 authored by Konstantinos BaxevanakisKonstantinos Baxevanakis, Brian Wisner, Sara Schlenker, Harsh Baid, A. Kontsos
A computational damage model which is driven by material, mechanical behavior and nondestructive evaluation data is presented in this study. To collect material and mechanical behavior damage data, an aerospace grade precipitate-hardened aluminum alloy was mechanically loaded under monotonic conditions inside a Scanning Electron Microscope, while acoustic and optical methods were used to track the damage accumulation process. In addition, to obtain experimental information about damage accumulation at the laboratory scale, a set of cyclic loading experiments was completed using 3-point bending specimens made out of the same aluminum alloy and by employing the same nondestructive methods. The ensemble of recorded data for both cases was then used in a post-processing scheme based on outlier analysis to form damage progression curves which were subsequently used as custom damage laws in finite element simulations. Specifically, a plasticity model coupled with stiffness degradation triggered by the experimentally defined damage curves was used in custom subroutines. The results highlight the effect of the data-driven damage model on the simulated mechanical response of the geometries considered and provide an information workflow that is capable of coupling experiments with simulations that can be used for remaining useful life estimations.
The authors would like to acknowledge the funding for this work provided by Army SBIR Health Conscious Structures for Zero-Maintainence Rotorcraft Platforms Phase 1 under contract number W911QX-15-C-0045.
- Mechanical, Electrical and Manufacturing Engineering
Published inJournal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
CitationBAXEVANAKIS, K.P. ...et al., 2018. Data-driven damage model based on nondestructive evaluation. Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 1(3): 031007.
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution 4.0 Unported Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/
NotesThis paper was accepted for publication in the journal Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems and the definitive published version is available at https://nondestructive.asmedigitalcollection.asme.org/article.aspx?articleID=2679657.