Vibrational characteristics of nanoparticle reinforced composite structures produced by additive manufacturing
MATERIALS TESTING, 2026 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Publication Date: 2026
- Doi Number: 10.1515/mt-2025-0360
- Journal Name: MATERIALS TESTING
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
- Keywords: free vibration response, nanoparticles, 3D printing, stereolithography, image processing
- Dokuz Eylül University Affiliated: Yes
Abstract
The present study investigates the printing consistency, free vibration response, impact strength, and hardness of 3D-printed composite specimens reinforced with graphene, boron, aluminum, and aluminum-boron hybrid nanoparticles. The specimens were produced via stereolithography using a nanoparticle-enhanced resin matrix. Free vibration analysis of cantilever composite beams was performed using a laser displacement measurement setup. Results reveal that the type of reinforcement significantly influences the frequency response of the specimens. Graphene-reinforced composites exhibit the highest elastic modulus, enhancing structural rigidity, whereas hybrid nanoadditives yield the greatest first parametric frequency. The damping ratio varied markedly with particle type, with boron-reinforced composites achieving the highest value, indicating superior energy absorption. Shore D hardness measurements confirmed that graphene reinforcement provides the maximum surface hardness. In addition, a MATLAB algorithm was developed to evaluate the effect of particle inclusion on printing consistency and quality through image processing method. Analyses demonstrated that nanoparticle incorporation modifies boundary geometry and layer spacing by altering resin flow and ultraviolet light dispersion during the printing process.