The emanation of 3D printing technology has enabled researchers to manufacture complex geometrical structures to design high impact energy-absorbing structure for different laboratory and industrial applications. In the present investigation, an Impact test had been performed to measure the absorbed energy during the plastic deformation of the PLA (Polylactic acid) 3D printed components with the combination of different infill patterns and infill densities. Experimental investigation on specimens through the Izod impact test concluded that at 85% infill density for each infill pattern, the energy absorption is maximum. Results showed that the fracture resistance of specimens was a mutual function of induced stress and crack propagation at the notch area during the impact test and the dynamics of impact failure outlined by mechanics of laminate composite.

3D打印技术的出现使研究人员能够制造复杂的几何结构，以设计适用于不同实验室和工业应用的高冲击吸能结构。在本研究中，已经进行了冲击试验，以结合不同填充图案和填充密度来测量PLA（聚乳酸）3D打印组件塑性变形期间吸收的能量。通过艾佐德冲击试验对样品进行的实验研究得出的结论是，对于每种填充图案，填充密度为85％时，能量吸收最大。