Speaker
Description
This work presents a comprehensive sensitivity study on the influence of measurement procedures and parameters in the experimental modal analysis (EMA) of ceramic blocks, with a focus on optimizing the identification of resonance frequencies and damping ratios for ceramic components used in power products applications. The study systematically investigates how variations in sample mounting, actuator placement, mesh density, and measurement settings affect the accuracy and reliability of modal parameters.A series of preliminary tests were conducted to evaluate the impact of actuator orientation and distance from the sample edge, revealing that while global actuator position has negligible effect on resonance frequencies, proximity to the edge significantly enhances dynamic response. The measurement methodology was further refined by analyzing the effects of mesh density on frequency and mode shape identification.Across a range of sample thicknesses, this study identifies trends in resonance frequency shifts and damping values, providing insights into the relationship between geometric parameters and modal behavior. The findings underscore the critical role of measurement procedure optimization in achieving accurate EMA results and offer guidance for future experimental campaigns and numerical model development.