This experimental example shows a study of the e-drive lamellae package, where the layered, punched sheets are axially compressed and the permanent magnets are embedded in the laminations. When studying such systems, using Restoring Force Surface (RFS) method allows users to create a snapshot of the behavior of the dynamic system. Due to the potential impact on the end user's perception of vehicle quality, the consideration of the changes in resin stiffness over time, the evolution of the time-dependent dynamic response in systems like Laminated Rotor Cores (LRC) remains an aspect in development. Technology development of nonlinear characterization of Laminated Rotor Cores (LRC) under different conditions allows engineers to understand how the dynamics evolve in time. Aging and hardening of polymer resin coating change the dynamics of the system. This change may be accelerated through thermal and centrifugal stress cycles or micro crack propagation of the resin coating. This investigation guides through the approach of nonlinear detection, and characterization and gives suggestions on how to linearize such systems.