Fatigue Modeling and Mechanical Performance of Additively Manufactured and Commercial Polylactic Acid to Support Sustainable Development Goals (SDGs) Completed with Bibliometric Analysis
Keywords:
3D printing, Additive Manufacturing, Linear Elastic Fracture Mechanics, MATLAB, Mechanical PropertiesAbstract
This study evaluates the fatigue behavior and mechanical
performance of polylactic acid (PLA) produced by fused
deposition modeling (FDM) and compares it with
commercially manufactured PLA to support Sustainable
Development Goals (SDGs) related to sustainable
manufacturing. Tensile, impact, and fatigue tests were
conducted to evaluate the strength, toughness, and fatigue
life under cyclic loading. A fatigue crack growth model based
on linear elastic fracture mechanics and Paris’ law was
developed and solved numerically using MATLAB. In
addition, a bibliometric analysis was conducted to identify
recent research trends connecting additive manufacturing,
fatigue performance, and sustainability. The results show
that process-induced anisotropy and defects significantly
reduce the fatigue resistance of FDM-printed PLA, while
optimized infill density and raster orientation improve
performance. The findings provide practical guidance for the
reliable and sustainable application of additively
manufactured polymer components.
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