A1-b2 - Phononic crystallography of fibre-reinforced polymers using broadband acoustic waves
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- A1-b - Acoustic and Elastic Metamaterials and Phononic Crystals
- Author(s)
- M. Wippermann, L. Claes - Paderborn University, Paderborn (Germany)
- Pages
- 24 - 27
- DOI
- 10.5162/Ultrasonic2025/A1-b2
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
Assuming that fibre-reinforced polymers can be modelled as two-dimensional phononic crystals, the present study proposes an approach to experimentally determine their crystallographic properties. The results closely resemble classical crystallographic methods, such as X-ray diffraction, but allow for the characterisation of macroscopic structures by non-destructive, acoustic means. The proposed method is based on the evaluation of spatio-temporal measurement data of broadband guided acoustic waves in the frequency and wavenumber domain.