Research and properties of porous structures obtained by 3D printing

Materials with a porous structure have been known for centuries, but only recently has their role in engineering applications increased significantly. They are valued for their lightness, ability to absorb impact energy and for their filtration properties. Their use provides many benefits but also creates new problems in engineering calculations. Most often, to determine the properties of porous materials, substitute modules and coefficients are used, which in most cases are functions of porosity. The article presents the results of a study on the gyroid structure obtained using the 3D printing method. It is a periodic structure representing an area close to the porous structure. The dependence of the Young's modulus (or elastic modulus) on the porosity of the structure was determined. For high porosity values, oscillations in the obtained results were observed. Therefore, an attempt was made to determine the minimal representative sample size.