Frequency response function data of a composite plate under various damage identification scenarios

TL;DR

This paper provides vibration data from a composite plate with simulated damage to help test and compare damage identification methods.

Contribution

The study introduces a reference test case with FRF data for benchmarking damage identification techniques in structural dynamics.

Findings

Baseline and damaged FRFs were collected using an impact hammer and accelerometers.

Added masses simulated damage effects at various locations on the composite plate.

The dataset serves as a proof-of-concept for validating and comparing damage identification approaches.

Abstract

This article presents data collected in support of research on damage identification in a composite plate, using low-frequency vibration measurements. The data consist of the Frequency Response Functions (FRFs) of a square plate, measured using an impact hammer and accelerometers, as an alternative to ultrasonic measurements. The plate is instrumented with 7 accelerometers, and a dense grid of candidate damage locations is defined. First, a set of baseline FRFs is collected by measuring the responses to hammer excitations at all grid points. Then, 6 damage identification scenarios are considered, and for each scenario, a set of FRFs is collected by measuring the responses to hammer excitations at the 7 accelerometer locations. Added masses are glued to the plate to reproduce the scattering effect of damage. This provides a convenient academic example for a wide range of topics in the field of structural dynamics and serves as a first proof-of-concept exercise for damage identification research. In addition, it allows to validate different approaches and benchmark their performance, thereby contributing a reference test case to adequately compare methods against one another.

Figures