Advances in Additive Manufacturing of Carbon Fiber‐Reinforced PETG Composites: Mechanical Properties and Industrial Applications

ABSTRACT The augmenting demand for high‐performance, adaptable materials in industries such as automotive, aerospace, and marine has driven a shift towards carbon fiber‐reinforced polymers (CFRPs), particularly in additive manufacturing. Carbon fiber‐reinforced polyethylene terephthalate glycol (CF‐PETG) is increasingly favored owing to its superlative mechanical attributes, including high strength, stiffness, and impact resistance. Its recyclability, ease of processing, and biocompatibility further expand its applications in manufacturing, medical devices, construction, and food packaging. This study explores several additive manufacturing techniques—Fused Filament Fabrication (FFF), Stereolithography (SLA), and Selective Laser Sintering (SLS)—highlighting FFF as the most efficient method for fabricating CF‐PETG components. The mechanical attributes of CF‐PETG, for instance, tensile strength, flexural strength, and elastic modulus, are compared against those of neat PETG and other polymers, revealing significant improvements in performance. The study also explores the numerical analyses of CF‐PETG with other polymers and it investigates the effect of key printing parameters on the material's mechanical behavior, and discusses ongoing research aimed at enhancing its properties through methods like thermal annealing. CF‐PETG stands out as a promising solution for industries focused on reducing weight, improving fuel efficiency, and meeting environmental regulations, making it a critical material for future advancements in sustainable manufacturing.