Effects of infill density on mechanical properties of additively manufactured chopped carbon fiber reinforced PLA composites

• Autorzy: Mayandi K. , Rigesh K. , Nagarajan Rajini , Ismail Sikiru O. , Krishnan Kumar , Mohammad Faruq , Al-Lohedan Hamad A.

Identyfikatory

DOI

10.2478/msp-2024-0003

• Języki publikacji: EN

Abstrakty

EN

In this present study, the fused deposition modeling (FDM) method was used to fabricate the composites. Before three-dimensional (3D) printing, samples were designed according to the ASTM D256, D790 and D3039 standards for impact, flexural and tensile tests, respectively, using Onshape software before conversion to an STL file format. Afterward, the digital file was sliced with infill densities of 60%, 80%, and 100%. The composite samples contained chopped carbon fiber (cCF) and poly lactic acid (PLA), as reinforcement and matrix, respectively. The cCF/PLA (simply called cCFP) filaments were printed into various cCFP composite (cCFPC) samples, using a Viper Share bot 3D machine with different infill densities before the aforementioned mechanical testing. The tensile strength of cCFP were obtained as 25.9MPa, 26.9MPa and 34.75MPa for 60%, 80% and 100% infill density cCFP samples, respectively. Similarly, the flexural strength of cCFP were obtained as 11.8MPa, 12.55MPa and 18.4MPa and impact strength was 47.48kJ/m², 48.45kJ/m²² for 60%, 80% and 100% infill density cCFP samples, respectively. The fractured/tested samples were examined and analyzed under a scanning electron microscope (SEM) to investigate the presence of fiber and void in the tensile sample. Based on the experimental results, it was evident that a high infill density of 100% with the highest reinforcement exhibited maximum impact strength, tensile and flexural strengths and moduli when compared with other lower carbon content of cCFPC samples. Therefore, the optimal 3D-printed cCFPC sample could be used for engineering application to benefit from properties of the polymer matrix composite materials and possibilities through additive manufacturing (AM).

Słowa kluczowe

EN

fused deposition modeling; 3D printing; composite; mechanical properties; scanning electron microscope; process innovation

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2024
• Tom: Vol. 42, No. 1
• Strony: 42--51
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Mayandi K.

• Department of Mechanical Engineering, Kalasalingam Academy of Research and Education Krishnankoil, India

autor

Rigesh K.

• Department of Mechanical Engineering, Kalasalingam Academy of Research and Education Krishnankoil, India

autor

Nagarajan Rajini

• Department of Mechanical Engineering, Kalasalingam Academy of Research and Education Krishnankoil, India

autor

Ismail Sikiru O.

• Department of Engineering, Centre for Engineering Research, School of Physics, Engineering and Computer Science, University of HertfordshireHatfield, UK

autor

Krishnan Kumar

• INTI International University Research Fellow, INTI International University Nilai,Nilai

autor

Mohammad Faruq

• Department of Chemistry, College of Science, King Saud University Riyadh, Kingdom of Saudi Arabia

autor

Al-Lohedan Hamad A.

• Department of Chemistry, College of Science, King Saud University Riyadh, Kingdom of Saudi Arabia

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