Printed Circuit Board Orthotropic Material Calibration for Static and Dynamic Loading

This paper presents a printed circuit board (PCB) material characterization by calibrating natural frequency, acceleration response, and surface strain to an orthotropic material law. The calibration procedure consists in creating a metamodel in OptiSLang software. A sensitivity analysis ranks the investigated parameters, and an optimization algorithm determines the design best fitting the experimental data. The procedure simultaneously calibrates an effective PCB section for all responses. There is excellent agreement between simulation and experiments. With low-cost measurements, the workflow captures the specific response of the PCB. We conclude with an overview of PCB analysis's most common FEA approaches. A lumped, transverse isotropic PCB model accommodates most applications, while the described multi-objective material calibration can efficiently characterize technology-specific PCBs.