Study of the Guided Wave Sensing by Hybrid Piezoelectric-FBG Approach

The objects of the investigation was the panel with dimensions: 1000 mm × 1000 mm × 1 mm made out of aluminium alloy. Elastic waves generation was conducted by piezoceramic actuator (PZT A) in the form of disc. Three diameters of actuators were investigated 10 mm, 20 mm and 30 mm. Actuator was located in the middle of the top surface of the panel. The elastic wave sensing was conducted by pair of FBG sensors (on the top and bottom surfaces of panel). Excitation signal – five cycles of sine modulated by Hann window function (tone burst). Excitation frequencies 60 kHz 250 kHz with step 10 kHz. Attached folder contains the data and description file with figure.

The measurements were conducted under the research related to grant agreement no. 2020/39/B/ST8/01753 in the frame of the OPUS project entitled: "Study of elastic wave mode sensing and separation using FBG sensors for structural health monitoring ", supported by the National Science Centre, Poland.