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Additive manufacturing (AM) techniques are increasingly popular across various industries due to their capability of producing complex shapes with minimal waste. Fused Deposition Modeling (FDM) is the most widely used method for creating these reinforced structures. The printed materials are intended for various applications, such as prototypes for the covers of thermal sensors or components in thermal storage systems. The paper presents the results of experimental activities related to 3D-printed samples, which aim to determine the thermal effects and strength of thermoplastic materials, such as polylactic acid (PLA). During the tensile tests, five different infill patterns were investigated: cubic pattern, lines pattern, triangle pattern, octet pattern, and quarter cubic pattern. The comparison of stress-strain curves, Poisson’s ratio, Young’s Modulus, etc., allows for evaluating the range of operating conditions and the application of selected printed samples. The novelty of the presented study is the analysis of thermal effects and comparison with mechanical effects during the tensile test of analyzed samples using thermal imaging results. The values of average temperature change during force increases and rapid temperature changes in the region close to the place of failure can be used in thermo-mechanical characterization of materials. Analysis of thermo-mechanical effects can help investigate the material fracture mechanisms produced by the FDM additive manufacturing technique.
Madejski et al. (Thu,) studied this question.