Structural-dependent mechanical behaviors of ink-jet printed films: Indentation testing and phase field fracture modeling

The utilization of ink-jet printing presents immense potential in the production of film sensors for gas turbines. This study delves into the mechanical properties of ink-jet printed films with varying thickness, through the indentation tests. In addition, the implementation of an anisotropic phase field fracture model enabled the simulation of the deformation and cracking mechanisms of ink-jet films with different microstructures. Emphasis is placed on the evaluation of the accuracy of indentation tests for films with intricate structures, while considering the effects of thickness and micro-void distributions. This study provides innovative insights into the structural-dependent failure mechanism of ink-jet films, offering a new perspective on the design of films with high mechanical strength.