Comparative analysis of reverberation plate measurement methods for the purpose of tuning the numerical model

Finite difference modeling is widely used to predict the behavior of plate structures, but its accuracy depends on validation with experimental data. Reliable measurements are crucial, yet accelerometer-based methods introduce challenges in model tuning. Acceleration values derived from displacement data lose constant components, whereas direct displacement measurements provide more accurate data but are less commonly used due to technical difficulties. This study compares displacement measurements using a laser sensor with acceleration measurements via an accelerometer on a reverberation plate. The findings indicate that displacement measurements yield accurate data without additional signal processing, making them valuable for model calibration. However, accelerometers remain more commonly used due to their ease of implementation, even though they may require additional processing steps to extract useful data. The study highlights the trade-offs between these methods in terms of measurement accuracy and practicality, providing insights for improving the calibration process of finite difference models of vibrating plate sensors.