Indentation experiments and simulations of nonuniformly photocrosslinked polymers in 3D printed structures

In this paper, the microscale mechanical properties of 3D printed multi-layered polymeric structure were investigated by indentation experiments. The indentation modulus appears to be periodically varied inside the multi-layered structure and the overall stiffness of a structure was highly dependent on its printing condition. To elucidate the evolution of the nonuniform mechanical properties, we develop a thermodynamically consistent model which...