An Experimental on the Influence of Process Parameters on the Tensile Properties of Carbon Fiber Reinforced PLA FDM Parts


  • R. Srinivasan
  • B. Suresh Babu
  • P. Seenivas Annamalai
  • S. Sivasankaran
  • M. Sri Bharani Tharaan


In recent years, one digital manufacturing technique gaining more excitement among researchers from academia and industry, which is used to build three-dimensional components by melting, extruding and depositing successive layers of semi-molten materials, is fused deposition modeling (FDM). FDM is a well-known additive manufacturing methods, a rapid prototyping method that is used widely for fabricating components from plastic materials directly from a digital file. However, it is a challenging task for FDM technique to build functional end user parts due to lack of basic knowledge about the effect of various FDM process parameters such as layer thickness, raster angle, infill pattern, air gap, build orientation and more. The quality and functionality of the FDM fabricated parts were influenced by the above mentioned processing parameters. The main focus of this paper is to experimentally investigate the independent influence of different FDM process parameters on the tensile properties. The study is carried out on 20% carbon fiber reinforced PLA material to analyze the individual effect of layer thickness, printing speed and infill pattern on the tensile property. Test specimen were printed by varying the above mentioned process parameters. The results indicated that the layer thickness and the printing speed significantly affected the tensile strength of the material. It has been observed that the individual process parameters have a considerable influence on the tensile strength of the 20% carbon fiber reinforced PLA FDM fabricated parts which help the design engineer to decide the proper process parameters so that fabricated FDM parts can have good tensile strength.