Inverse fuzzy arithmetic for material characterization of composites using guided waves

Leonardo Araque; Lifu Wang; Ajit Mal; Christoph Schaal

doi:10.1117/12.2583947

22 March 2021 Inverse fuzzy arithmetic for material characterization of composites using guided waves

Leonardo Araque, Lifu Wang, Ajit Mal, Christoph Schaal

Proceedings Volume 11593, Health Monitoring of Structural and Biological Systems XV; 115930U (2021) https://doi.org/10.1117/12.2583947
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only

Abstract

In this study, a technique based on guided ultrasonic waves coupled with an uncertainty analysis is developed to quantify the deviation from the assumed nominal value of the material constants of quasi-isotropic fiber-reinforced composites. It is shown that the measured group velocities vary depending on the location within the laminate, opening the possibility of questioning whether the assumed nominal values of the material properties could accurately represent the entire material system at any region. Furthermore, after the identified material parameters are defuzzyfied, a new set of nominal values for the material properties is determined. These preliminary findings might allow for the development of other efficient, nondestructive material characterization techniques in the future.

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Leonardo Araque, Lifu Wang, Ajit Mal, and Christoph Schaal "Inverse fuzzy arithmetic for material characterization of composites using guided waves", Proc. SPIE 11593, Health Monitoring of Structural and Biological Systems XV, 115930U (22 March 2021); https://doi.org/10.1117/12.2583947

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