Structural identification for composite structures through a wave approach

Apaowo, K

Abstract

A novel approach for identifying the geometric and material characteristics of layered composite structures through an inverse wave and finite element methodology is proposed. These characteristics are obtained through multi-frequency single shot measurements. It is emphasized that the success of the approach is independent of the employed excitation frequency regime, meaning that both structural dynamics and ultrasound frequency spectra can be employed. Since a full FE description is employed for the periodic composite, the presented approach is able to account for structures of arbitrary complexity. The procedure is applied to a sandwich panel with composite facesheets and results compared well with two wave-based characterization techniques: the Inhomogeneous Wave Correlation method and the Transition Frequency Characterization method.

Citation

Apaowo, K. (2021, May). Structural identification for composite structures through a wave approach. Paper presented at ICAMME 2021: 15. International Conference on Aerospace, Mechatronics and Mechanical Engineering, London, UK (online)

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: ICAMME 2021: 15. International Conference on Aerospace, Mechatronics and Mechanical Engineering
• Conference Location: London, UK (online)
• Start Date: May 24, 2021
• End Date: May 25, 2021
• Deposit Date: Apr 29, 2021
• Keywords: Structural identification; Non-Destructive Evalua-tion; Finite Elements; Wave Propagation; Layered Structures; Ultrasound
• Public URL: https://nottingham-repository.worktribe.com/output/5503002
• Related Public URLs: https://waset.org/aerospace-mechatronics-and-mechanical-engineering-conference-in-may-2021-in-london