The impact of process parameters on mechanical properties of parts fabricated in PLA with an open-source 3-D printer
Tóm tắt
– This study aims to quantify the ultimate tensile strength and the nominal strain at break (ɛf) of printed parts made from polylactic acid (PLA) with a Replicating Rapid prototyper (Rep-Rap) 3D printer, by varying three important process parameters: layer thickness, infill orientation and the number of shell perimeters. Little information is currently available about mechanical properties of parts printed using open-source, low-cost 3D printers.
– A computer-aided design model of a tensile test specimen was created, conforming to the ASTM:D638. Experiments were designed, based on a central composite design. A set of 60 specimens, obtained from combinations of selected parameters, was printed on a Rep-Rap Prusa I3 in PLA. Testing was performed using a JJ Instruments – T5002-type tensile testing machine and the load was measured using a load cell of 1,100 N.
– This study investigated the main impact of each process parameter on mechanical properties and the effects of interactions. The use of a response surface methodology allowed the proposition of an empirical model which connects process parameters and mechanical properties. Even though results showed a high variability, additional ideas on how to understand the impact of process parameters are suggested in this paper.
– On the basis of experimental results, it is possible to obtain practical suggestions to set common process parameters in relation to mechanical properties. Experiments discussed in the present paper provide a variety of data and insight regarding the relationship among the main process parameters and the stiffness and strength of fused deposition modeling-printed parts made from PLA. In particular, this paper underlines the shortage in existing literature concerning the impact of process parameters on the elastic modulus and the strain to failure for the PLA. The experimental data produced show a good degree of compliance with analytical formulations and other data found in literature.
Từ khóa
Tài liệu tham khảo
Ahn, S.H. , Montero, M. , Odell, D. , Roundy, S. and Wright, P.K. (2008), “Anisotropic material properties of fused deposition modeling ABS”, Rapid Prototyping Journal , Vol. 8 No. 4, pp. 248-257.
Coleman, D.E. and Montgomery, D.C. (1993), “A systematic approach to planning for a designed industrial experiment”, Techno Metrics , Vol. 35 No. 1, pp. 1-12.
Council, A. and Petch, M. (2014), 3D Printing: Rise of the Third Industrial Revolution , Gyges, Tumwater, 3D, p. 116.
Crump, S. (1992), “Apparatus and method for creating three-dimensional objects”, US Patent 5,121,329, 9 June.
Durgun, I. and Ertan, R. (2014), “Experimental investigation of FDM process for improvement of mechanical properties and production cost”, Rapid Prototyping Journal , Vol. 20 No. 3, pp. 228-235.
Homepage (2014), available at: www.google.com (accessed 4 September 2014).
Huang, S.H. , Liu, P. , Mokasdar, A. and , and Hou, L. (2013), “Additive manufacturing and its societal impact:a literature review”, International Journal of Advanced Manufacturing Technology , Vol. 67 Nos 5/8, pp. 1191-1203.
Hull, C. (1986), “Apparatus for production of three-dimensional objects by stereolithography”, US Patent 4,575,330, 11 March.
ISO/ASTM 52915 (2013), “E, specification for additive manufacturing file format (AMG)”, Version, 1.1.
ISO/ASTM 52921 (2013), “E, terminology for additive manufacturing – coordinate systems and test methodologies”.
Jacobs, P.F. (1992), Rapid Prototyping & Manufacturing: Fundamentals of Stereo Lithography , Society of Manufacturing Engineers (SME), Dearborn, p. 434.
Jacobs, P.F. (1996), Stereo Lithography and other RP&M Technologies: From Rapid Prototyping to Rapid Tooling , Society of Manufacturing Engineers (SME), Dearborn, p. 450.
Jones, R. , Haufe, P. , Sells, E. , Iravani, P. , Olliver, V. , Palmer, C. and Bowyer, A. (2011), “RepRap-the replicating rapid prototyper”, Robotica , Vol. 29 No. 1, pp. 177-191.
Kentzer, J. , Koch, B. , Thiim, M. , Jones, R.W. and Villumsen, E. (2011), “An open source hardware based mechatronics project: the replicating rapid 3-D printer”, Proceeding of the 4th International Conference on Mecatronics (ICOM), Kuala Lumpur, pp. 1-8.
Lanzotti, A. (2008), “Robust design of car packaging in virtual environment”, International Journal on Interactive Design and Manufacturing , Vol. 2 No. 1, pp. 39-46.
Li, L. , Sun, Q. , Bellehumeur, C. and Gu, P. (2002), “Composite modeling and analysis for fabrication of FDM prototypes with locally controlled properties”, Journal of Manufacturing Processing , Vol. 4 No. 2, pp. 129-141.
Masood, S.H. (2014), “Advances in fused deposition modeling”, in Masood, S.H. (Ed.), Advances in Rapid Manufacturing and Tooling, Comprehensive Materials Processing , Elsevier Science Direct, Glasgow, pp. 69-91.
Masood, S.H. , Mau, K. and Song, W.Q. (2010), “Tensile properties of processed FDM polycarbonate material”, Materials Science Forum , Vols 654/656 No. 1, pp. 2556-2559.
Novakova-Marcincinova, L. and Novak-Marcincin, J. (2014), “Testing of ABS material tensile strength for fused deposition modeling rapid prototyping method”, Advanced Materials Research , Vols 912/914 No. 1, pp. 370-373.
Palumbo, B. , De Chiara, G. , Sansone, F. and Marrone, R. (2011), “Technological scenarios of variation transmission in multistage machining processes”, Quality and Reliability Engineering International , Vol. 27 No. 5, pp. 651-658.
Pearce, J.M. (2012), “Building research equipment with free open-source hardware”, Science , Vol. 337 No. 6100, pp. 1303-1304.
Pearce, J.M. , Morris Blair, C. , Laciak, K.J. , Andrews, R. , Nosrat, A. and Zelenika-Zovko, I. (2010), “3-D printing of open source appropriate technologies for self-directed sustainable development”, Journal of Sustainable Development , Vol. 3 No. 4, pp. 17-29.
Rodriguez, J.F. , Thomas, J.P. and Renaud, J.E. (2003), “Mechanical behavior of acrylonitrile butadiene styrene fused deposition materials modeling”, Rapid Prototyping Journal , Vol. 9 No. 4, pp. 219-230.
Rodriguez, J.F. , Thomas, J.P. and Renaud, J.E. (2003), “Design of fused-deposition ABS components for stiffness and strength”, Mechanical Design Journal , Vol. 125 No. 3, pp. 545-551.
Sells, E. , Bailard, S. , Smith, Z. and Bowyer, A. (2010), “RepRap: the replicating rapid prototype: maximizing customizability by breeding the means of production”, in Piller, F.T. and Tseng, M.M. (Eds), Handbook of Research in Mass Customization and Personalization: Strategies and Concepts , World Scientific, Tokyo, Vol. 1, pp. 568-580.
Smith, W.C. and Dean, R.W. (2013), “Structural characteristics of fused deposition modeling polycarbonate material”, Polymer Testing , Vol. 32 No. 8, pp. 1306-1312.
Sood, A.K. , Ohdar, R.K. and Mahapatra, S.S. (2010), “Parametric appraisal of mechanical property of fused deposition modelling”, Material and Design , Vol. 31 No. 1, pp. 287-295.
Stephen, A.O. , Dalgarno, K.W. and Munguia, J. (2014), “Quality assurance and process monitoring of fused deposition modelling made parts”, Advanced Research in Virtual and Rapid Prototyping , Taylor & Francis Group, London.
The Economist (2012), “A third industrial revolution”, The Economist, 21 April, available at: www.economist.com/node/21552901
Tymrak, B.M. , Kreiger, M. and Pearce, J.M. (2014), “Mechanical properties of components fabricated with open-source 3-D printers under realistic environmental conditions”, Materials and Design , Vol. 58 No. 1, pp. 242-246.