###### Abstract
Previous research on the AM fabrication of FGLSs has mainly focused on the use of CAD software for pore shape, size and density variation. [PERSON] et al. (2017) investigated the energy absorption, deformation processes and mechanical performance of gradient and uniform lattice structures [16]. According to their results, the energy absorbed by uniform structures increased linearly with compressive strain. Additionally, they reported that FGLSs weaken periodically from low-density upper layers to high-density lower layers. [PERSON] et al. (2020) created structures with different densities and configurations by varying the unidirectional dimension of the unit cell [17]. The specimens fabricated using Selective Laser Sintering (SLS) were tested with a quasi-static compression test. The results showed that the gradient structure has strong strength properties under small amounts of stress, while it has high-performance properties under large amounts of stress. [PERSON] et al. (2018) performed experimental compression tests and Finite Element Analysis (FEA) to compare the mechanical properties and energy absorption capacity of lattice structures fabricated using Selective Laser Melting (SLM) [20]. The total energy absorption per unit volume of FGLSs was higher than the uniform structure. Although FGLSs entered the onset of densification strain earlier than the uniform structure, they were able to absorb higher amounts of energy than the uniform structure. [PERSON] et al. (2019) optimized the gradient lattice density distribution by choosing the strut diameter as the design variable [18]. Although there were observable accuracy errors between the results obtained from the optimization and full-scale models, the optimization performance was reported to be successful. Many parameters, such as the internal design of unit cells, porosity, mechanical strength, weight, compression time, etc., affect the production of porous parts to be used in industrial applications. On the other hand, the internal structure of cellular structures can also be designed in such a way that deformation results in negative Poisson's ratio behavior [21]. These structures, defined as auxetic materials, have many engineering advantages such as high energy absorption, impact resistance and high fracture and shear resistance [22]. Therefore, auxetic structures can be used in the production of automotive components such as tires, bumpers and energy absorption devices [1] The main load-carrying properties of eutectic materials are that when a compressive load is applied in the longitudinal direction, the eutectic material contracts rather than expands in the lateral direction. Thus, under compression, the eutectic material moves towards the load and increases the stiffness of the structure around the point where the load is applied. [PERSON] at al. (2018) proposed gradient auxetic cellular structures to design a superior structure in terms of energy efficiency [1]. The results showed that gradient structures have a lower resistance force and a higher energy absorption capacity than uniform structures. Similarly, [PERSON] and [PERSON], (2015) created both uniform and functionally graded structures using unit cells with double arrowhead honeycomb geometry [23]. The quasi-static and impact behaviors of these structures were investigated. It was observed that the FGLSs have a higher energy absorption capacity under high-speed impacts. There are also studies in the literature that use different approaches to construct FGLSs [24; 25; 26; 27; 28]. There have been several studies on the AM fabrication of FGLSs. Recently, the high-resolution capability, the use of hard and soft resins in a single printing process, inherent morphing capabilities and simplified finishing activities have motivated the use of Material Jetting (MJ) for the fabrication of lattice structures [29]. MJ enables the printing of thinner layers than other polymer printing techniques, resulting in products with high dimensional accuracy and low surface roughness [29; 30].