Data on full wave-field measurement of transient guided resonance pulses propagating in a composite structure.

ABSTRACT: Guided resonances (GR) are high-order, unidirectional waves able to propagate over a long range in finite cross-sections' waveguides. Near cut-on GR exhibit a variety of scattering behaviors going from zero group velocity to quasi non-dispersive propagation. This data article presents the surface velocities measured during the propagation of near cut-on high-order guided resonances in a 3-m-long sandwich panel. Full-field velocimetry is used to measure and visualize the transient propagation of 8-to-10 cycles wave pulses at 2500, 3000 and 4000 Hz. The waves are generated as transient pulses using waveform appropriation by an array of piezoelectric transducers at different bandwidths below and above the cut-on frequency. The data provided in this article includes the complete time-dependent wave-field measured during the propagation of the GR pulses. This data will help testing and validating wave-based model updating or time-domain signal processing/filtering methodologies. One of the main contributions is to give researchers and industrial an insight on near cut-on GR scattering process occurring in the low acoustic (audible) frequency range.

SUBMITTER: Droz C 

PROVIDER: S-EPMC6811916 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature