Mechanical Deformation Study of Flexible Leadset Components for Electromechanical Reliability of Wearable Electrocardiogram Sensors

The focus of this paper is to study the reliability of a wearable electrocardiogram sensor leadset under tight bending conditions using numerical simulations and experiments. In these simulations, appropriate material models are selected and fitted for each material layer, including a hyperelastic model for TPU, an elastic-plastic model for PET, and linear elastic models for the silver ink, carbon ink, and dielectric layers. The results from the numerical simulations are compared and validated using an analytical model as well as experimental data. Recommendations are made for acceptable operating conditions of the leadset.