Additive manufacturing: technology, applications and research needs

Abstract

Additive manufacturing (AM) technology has been researched and developed for more than 20 years. Rather than removing materials, AM processes make three-dimensional parts directly from CAD models by adding materials layer by layer, offering the beneficial ability to build parts with geometric and material complexities that could not be produced by subtractive manufacturing processes. Through intensive research over the past two decades, significant progress has been made in the development and commercialization of new and innovative AM processes, as well as numerous practical applications in aerospace, automotive, biomedical, energy and other fields. This paper reviews the main processes, materials and applications of the current AM technology and presents future research needs for this technology.

Keywords

additive manufacturing (AM) / AM processes / AM materials / AM applications

References

[1] ASTM. ASTM F2792-10 standard terminology for additive manufacturing technologies

[2] Jacobs P F. Rapid Prototyping & Manufacturing: Fundamentals of Stereolithography. Dearborn: SME publication, 1992

[3] Comb J W, Priedeman W R, Turley P W. FDM technology process improvements. In: Proceedings of Solid Freeform Fabrication Symposium. Austin, TX, 1994, 42–49

[4] Beaman J J, Barlow J W, Bourell D L, Barlow J W, Crawford R H, McAlea K P. Solid Freeform Fabrication: A New Direction in Manufacturing. Norwell: Kluwer Academic Publishers, 1997, 25–49

[5] Feygin M, Hsieh B. Laminated object manufacturing (LOM): a simpler process. In: Proceedings of Solid Freeform Fabrication Symposium. Austin, TX, 1991, 123–130

[6] Sachs M E, Haggerty J S, Cima M J, Williams P A. Three dimensional printing techniques. United States Patent, 5,204,055, 1993

[7] Mazumder J, Schifferer A, Choi J. Direct materials deposition: designed macro and microstructure. Materials Research Innovations, 1999, 3(3): 118–131

[8] Waterman N A, Dickens P. Rapid product development in the USA, Europe and Japan. World Class Design to Manufacture, 1994, 1(3): 27–36

[9] Thomas C L, Gaffney T M, Kaza S, Lee C H. Rapid prototyping of large scale aerospace structures. In: Proceedings of Aerospace Applications Conference IEEE. Aspen, CO, 1996, 4: 219–230

[10] Song Y, Yan Y, Zhang R, Xu D, Wang F. Manufacturing of the die of an automobile deck part based on rapid prototyping and rapid tooling technology. Journal of Materials Processing Technology, 2002, 120(1-3): 237–242

[11] Giannatsis J, Dedoussis V. Dedoussis. Additive fabrication technologies applied to medicine and health care: a review. International Journal of Advanced Manufacturing Technology, 2009, 40(1-2): 116–127

[12] Sachlos E, Czernuszka J T. Making tissue engineering scaffolds work. Review: the application of solid freeform fabrication technology to the production of tissue engineering scaffolds. European Cells & Materials, 2003, 5: 29-39, discussion 39-40

[13] Pham D T, Dimov S S. Rapid prototyping and rapid tooling – the key enablers for rapid manufacturing. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2003, 217(1): 1–23

[14] Onuh S O, Yusuf Y Y. Rapid prototyping technology: applications and benefits for rapid product development. Journal of Intelligent Manufacturing, 1999, 10(3/4): 301–311

[15] Goldsberry C. Rapid change in additive manufacturing landscape. http://www.plasticstoday.com/articles/rapid-change-additive-manufacturing-landscape. 2009

[16] Kruth J P. Material increase manufacturing by rapid prototyping techniques. CIRP Annals- Manufacturing Technology, 1991, 40(2): 603–614

[17] Kruth J P, Leu M C, Nakagawa T. Progress in additive manufacturing and rapid prototyping. CIRP Annals- Manufacturing Technology, 1998, 47(2): 525–540

[18] Brady A G, Halloran J W. Stereolithography of ceramic suspensions. Rapid Prototyping Journal, 1997, 3(2): 61–65

[19] Doreau F, Chaput C, Chartier T. Stereolithography for manufacturing ceramic parts. Advanced Engineering Materials, 2000, 2(8): 493–496

[20] Chartier T, Chaput C, Doreau F, Loiseau M. Stereolithography of structural complex ceramic parts. Journal of Materials Science, 2002, 37(15): 3141–3147

[21] Monneret S, Loubere V, Corbel S. Microstereolithography using dynamic mask generator and a non-coherent visible light source. Proceedings of the Society for Photo-Instrumentation Engineers, 1999, 3680: 553–561

[22] Sun C, Fang N, Wu D M, Zhang X. Projection micro-stereolighography using digital micro-mirror dynamic mask. Sensors and Actuators. A, Physical, 2005, 121(1): 113–120

[23] Chua C K, Leong K F, Lim C S. Rapid Prototyping: Principles and Applications. 3rd ed. Singapore: World Scientific Publishing Company, 2010, 165–171

[24] Zhang W, Leu M C, Ji Z, Yan Y. Rapid freezing prototyping with water. Materials & Design, 1999, 20(2-3): 139–145

[25] Leu M C, Zhang W, Sui G. An experimental and analytical study of ice part fabrication with rapid freeze prototyping. CIRP Annals- Manufacturing Technology, 2000, 49(1): 147–150

[26] Leu M C. Rapid freeze prototyping. Materials World Journal, 2000: 9–11

[27] Liu Q, Sui G, Leu M C. Experimental study on the ice pattern fabrication for the investment casting by rapid freeze prototyping. Computers in Industry, 2002, 48(3): 181–197

[28] Bryant F D, Sui G, Leu M C. A study on effects of process parameters in rapid freeze prototyping. Rapid Prototyping Journal, 2003, 9(1): 19–23

[29] Crump S S. Fused deposition modeling (FDM): putting rapid back into prototyping. In: The 2nd International Conference on Rapid Prototyping. Dayton, Ohio, 1991: 354–357

[30] Jafari M A, Han W, Mohammadi F, Safari A, Danforth S C, Langrana N. A novel system for fused deposition of advanced multiple ceramics. Rapid Prototyping Journal, 2000, 6(3): 161–175

[31] Khalil S, Nam J, Sun W. Multi-nozzle deposition for construction of 3D biopolymer tissue scaffolds. Rapid Prototyping Journal, 2005, 11(1): 9–17

[32] Bellini A, Shor L, Guceri S I. New developments in fused deposition modeling of ceramics. Rapid Prototyping Journal, 2005, 11(4): 214–220

[33] Robocasting Enterprises L L C. http://www.robocasting.net/

[34] Russias J, Saiz E, Deville S, Gryn K, Liu G, Nalla R K, Tomsia A P. Fabrication and in vitro characterization of three-dimensional organic/inorganic scaffolds by robocasting. Journal of Biomedical Materials Research. Part A, 2007, 83(2): 434–445

[35] Mason M S, Huang T, Landers R G, Leu M C, Hilmas G E. Aqueous based extrusion of high solids loading ceramic pastes: process modeling and control. Journal of Materials Processing Technology, 2009, 209(6): 2946–2957

[36] Huang T, Mason M S, Hilmas G E, Leu M C. Aqueous based freeze-form extrusion fabrication of alumina components. Rapid Prototyping Journal, 2009, 15(2): 88–95

[37] Liu H J, Leu M C. Liquid phase migration in extrusion of aqueous alumina paste for freeze-form extrusion fabrication. International Journal of Modern Physics B, 2009, 23(06n07): 1861–1866

[38] Liu H J, Leu M C. Research on extrusion velocity in freeform extrusion fabrication of aqueous alumina paste. Key Engineering Materials, 2009, 419-420: 125–128

[39] Pham D T, Dimov S, Lacan F.Selective laser sintering: applications and technological capabilities. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1999, 213(5): 435–449

[40] Das S, Wohlert M, Beaman J J, Bourell D L. Producing metal parts with selective laser sintering/hot isostatic pressing. Journal of Materials, 1998, 50(12): 17–20

[41] Kruth J P, Levy G, Klocke F, Childs T H C. Consolidation phenomena in laser and powder-bed based layered manufacturing. CIRP Annals- Manufacturing Technology, 2007, 56(2): 730–759

[42] Kruth J P, Vandenbroucke B, Vaerenbergh J V, Mercelis P. Benchmarking of different SLS/SLM processes as rapid manufacturing techniques. In: Proceedings of International Conference Polymers & Moulds Innovations (PMI). Gent, Belgium, 2005

[43] Kruth J P, Mercelis P, Vaerenbergh J V, Froyen L, Rombouts M. Binding mechanisms in selective laser sintering and selective laser melting. Rapid Prototyping Journal, 2005, 11(1): 26–36

[44] Kumar S. Selective laser sintering: a qualitative and objective approach. JOM, 2003, 55(10): 43–47

[45] Levy G N, Schindel R, Kruth J P. Rapid manufacturing and rapid tooling with layer manufacturing (LM) technologies, state of the art and future perspectives. CIRP Annals- Manufacturing Technology, 2003, 52(2): 589–609

[46] Kruth J P, Froyen L, Van Vaerenbergh J, Mercelis P, Rombouts M, Lauwers B. Selective laser melting of iron-based powder. Journal of Materials Processing Technology, 2004, 149(1-3): 616–622

[47] Abe F, Osakada K, Shiomi M, Uematsu K, Matsumoto M. The manufacturing of hard tools from metallic powders by selective laser melting. Journal of Materials Processing Technology, 2001, 111(1-3): 210–213

[48] Lu L, Fuh J, Chen Z, Leong C C, Wong Y S. In situ formation of TiC composite using selective laser melting. Materials Research Bulletin, 2000, 35(9): 1555–1561

[49] Osakada K, Shiomi M. Flexible manufacturing of metallic products by selective laser melting of powder. International Journal of Machine Tools & Manufacture, 2006, 46(11): 1188–1193

[50] Cormier D, Harrysson O, West H. Characterization of H13 steel produced via electron beam melting. Rapid Prototyping Journal, 2004, 10(1): 35–41

[51] Heinl P, Rottmair A, Korner C, Singer R F. Cellular titanium by selective electron beam melting. Advanced Engineering Materials, 2007, 9(5): 360–364

[52] Rännar L E, Glad A, Gustafson C G. Efficient cooling with tool inserts manufactured by electron beam melting. Rapid Prototyping Journal, 2007, 13(3): 128–135

[53] Harrysson O, Cansizoglu O, Marcellin-Little D J, Cormier D R, West H A II. Direct metal fabrication of titanium implants with tailored materials and mechanical properties using electron beam melting technology. Materials Science and Engineering C, 2008, 28(3): 366–373

[54] Cormier D, West H, Harrysson O, Knowlson K. Characterization of thin walled Ti-6Al-4V components produced via electron beam melting. In: Proceeding of Solid Freeform Fabrication Symposium. Austin, TX, 2004

[55] Heinl P, Müller L, Körner C, Singer R F, Müller F A. Cellular Ti-6Al-4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting. Acta Biomaterialia, 2008, 4(5): 1536–1544

[56] Gasser A, Backes G, Kelbassa I, Weisheit A, Wissenbach K. Laser additive manufacturing: laser metal deposition (LMD) and selective laser melting (SLM) in turbo-engine applications. Laser Material Processing, 2010, 2: 58–63

[57] Balla V K, DeVasConCellos P D, Xue W, Bose S, Bandyopadhyay A. Fabrication of compositionally and structurally graded Ti-TiO2 structures using laser engineered net shaping (LENS). Acta Biomaterialia, 2009, 5(5): 1831–1837

[58] Lewis G K, Schlienger E. Practical considerations and capabilities for laser assisted direct metal deposition. Materials & Design, 2000, 21(4): 417–423

[59] Zhang K, Liu W, Shang X. Research on the processing experiments of laser metal deposition shaping. Optics & Laser Technology, 2007, 39(3): 549–557

[60] Lewis G K. Direct laser metal deposition process fabricates near-net-shape components rapidly. Materials Technology, 1995, 10(3): 51–54

[61] Hofmeister W, Griffith M, Ensz M, Smugeresky J. Solidification in direct metal deposition by LENS processing. JOM, 2001, 53(9): 30–34

[62] Sachs E, Cima M, Cornie J, Brancazio D, Bredt J, Curodeau A, Fan T, Khanuja S, Lauder A, Lee J, Michaels S. Three-dimensional printing: the physics and implications of additive manufacturing. CIRP Annals- Manufacturing Technology, 1993, 42(1): 257–260

[63] Melican M C, Zimmerman M C, Dhillon M S, Ponnambalam A R, Curodeau A, Parsons J R. Three-dimensional printing and porous metallic surfaces: a new orthopedic application. Journal of Biomedical Materials Research, 2001, 55(2): 194–202

[64] Dimitrov D, Schreve K, Beer N. Advances in three dimensional printing – state of the art and future perspectives. Rapid Prototyping Journal, 2006, 12(3): 136–147

[65] Lee M, Dunn J C, Wu B M. Scaffold fabrication by indirect three-dimensional printing. Biomaterials, 2005, 26(20): 4281–4289

[66] Butscher A, Bohner M, Roth C, Ernstberger A, Heuberger R, Doebelin N, von Rohr P R, Müller R. Printability of calcium phosphate powders for three-dimensional printing of tissue engineering scaffolds. Acta Biomaterialia, 2012, 8(1): 373–385

[67] Seitz H, Rieder W, Irsen S, Leukers B, Tille C. Three-dimensional printing of porous ceramic scaffolds for bone tissue engineering. Journal of Biomedical Materials Research. Part B, Applied Biomaterials, 2005, 74(2): 782–788

[68] Sachs E, Cima M, Cornie J. Three-dimensional printing: rapid tooling and prototypes directly form a CAD model. CIRP Annals- Manufacturing Technology, 1990, 39(1): 201–204

[69] Bak D. Rapid prototyping or rapid production? 3D printing processes move industry towards the latter. Assembly Automation, 2003, 23(4): 340–345

[70] Mueller B, Kochan D. Laminated object manufacturing for rapid tooling and patternmaking in foundry industry. Computers in Industry, 1999, 39(1): 47–53

[71] Prechtl M, Otto A, Geiger M. Rapid tooling by laminated object manufacturing of metal foil. Advanced Materials Research, 2005, 6-8: 303–312

[72] Park J, Tari M J, Hahn H T. Characterization of the laminated object manufacturing (LOM) process. Rapid Prototyping Journal, 2000, 6(1): 36–50

[73] Weisensel L, Travitzky N, Sieber H, Greil P. Laminated object manufacturing (LOM) of SiSiC composites. Advanced Engineering Materials, 2004, 6(11): 899–903

[74] Liao Y S, Li H C, Chiu Y Y. Study of laminated object manufacturing with separately applied heating and pressing. International Journal of Advanced Manufacturing Technology, 2006, 27(7-8): 703–707

[75] Pham D T, Gault R S. A comparison of rapid prototyping technologies. International Journal of Machine Tools & Manufacture, 1998, 38(10-11): 1257–1287

[76] Caulfield B, McHugh P E, Lohfeld S. Dependence of mechanical properties of polyamide components on build parameters in the SLS process. Journal of Materials Processing Technology, 2007, 182(1-3): 477–488

[77] Zarringhalam H, Majewski C, Hopkinson N. Degree of particle melt in Nylon-12 selective laser-sintered parts. Rapid Prototyping Journal, 2009, 15(2): 126–132

[78] Ahn S H, Montero M, Odell D, Roundy S, Wright P K. Anisotropic material properties of fused deposition modeling ABS. Rapid Prototyping Journal, 2002, 8(4): 248–257

[79] Lam C X F, Mo X M, Teoh S H, Hutmacher D W. Scaffold development using 3D printing with a starch-based polymer. Materials Science and Engineering C, 2002, 20(1-2): 49–56

[80] Schmidt M, Pohle D, Rechtenwald T. Selective laser sintering of PEEK. Annals- Manufacturing Technology, 2007, 56(1): 205–208

[81] Leong K F, Wiria F E, Chua C K, Li S H. Characterization of a poly-ϵ-caprolactone polymeric drug delivery device built by selective laser sintering. Bio-Medical Materials and Engineering, 2007, 17(3): 147–157

[82] Ramanath H S, Chua C K, Leong K F, Shah K D. Melt flow behaviour of poly-ϵ-caprolactone in fused deposition modelling. Journal of Materials Science. Materials in Medicine, 2008, 19(7): 2541–2550

[83] Ramanath H S, Chandrasekaran M, Chua C K, Leong K F, Shah K D. Modeling of extrusion behavior of biopolymer and composites in fused deposition modeling. Key Engineering Materials, 2007, 334-335: 1241–1244

[84] Cheah C M, Chua C K, Lee C W, Feng C, Totong K. Rapid prototyping and tooling techniques: a review of applications for rapid investment casting. International Journal of Advanced Manufacturing Technology, 2005, 25(3-4): 308–320

[85] Agarwala M, Bourell D, Beaman J, Marcus H, Barlow J. Direct selective laser sintering of metals. Rapid Prototyping Journal, 1995, 1(1): 26–36

[86] Agarwala M, Bourell D, Beaman J, Marcus H, Barlow J. Post-processing of selective laser sintered metal parts. Rapid Prototyping Journal, 1995, 1(2): 36–44

[87] Allen S M, Sachs E M. Three-dimensional printing of metal parts for tooling and other applications. Metals and Materials, 2000, 6(6): 589–594

[88] Clarinval A M, Carrus R, Dormal T, Soyeur Q. Fabrication of stainless steel and ceramic parts with the Optoform process. Advanced Research inVirtual and Rapid Manufacturing. London: Taylor & Francis Group, 2007: 415–418

[89] Richard G. Additive manufacturing of titanium. Optomec Inc. 2009

[90] Mudge R P, Wald N R. Laser engineered net shaping advances additive manufacturing and repair. Welding Journal-New York, 2007, 86(1): 44–48

[91] MTT Technologies Group. MTT selective laser melting. 2009

[92] Arcam A B. http://www.arcam.com

[93] Strondl A, Palm M, Gnauk J, Frommeyer G. Microstructure and mechanical properties of nickel based superalloy IN718 produced by rapid prototyping with electron beam melting (EBM). Materials Science and Technology, 2011, 27(5): 876–883

[94] Otubo J, Antunes A S. Characterization of 150 mm in diameter NiTi SMA ingot produced by electron beam melting. Materials Science Forum, 2010, 643: 55–59

[95] Sachs E, Cima M, Bredt J. CAD-casting: direct fabrication of ceramic shells and cores by three-dimensional printing. Manufacturing Review (USA), 1992, 5(2): 117–126

[96] Rudraraju A, Deptowicz D, Das S. Strategies for fabricating next-generation multifunctional airfoil designs through LAMP. In: Proceedings of the International Solid Freeform Fabrication Symposium. Austin, TX, 2011

[97] Yuan D, Kambly K, Shao P, Rudraraju A, Cilio P, Tomeckoa V, Torres C, Halloran J W, Das S. Experimental investigations on a photocurable ceramic material system for large area maskless photolymerization. In: Proceedings of the International Solid Freeform Fabrication Symposium. Austin, TX, 2009

[98] Corporation Z. 3DP Consumables Catalog. 2010

[99] Allahverdi M, Danforth S C, Jafari M, Safari A. Processing of advanced electroceramic components by fused deposition technique. Journal of the European Ceramic Society, 2001, 21(10-11): 1485–1490

[100] Rangarajan S, Qi G, Venkataraman N, Safari A, Danforth S C. Powder processing, rheology, and mechanical properties of feedstock for fused deposition of Si₃N₄ ceramics. Journal of the American Ceramic Society, 2000, 83(7): 1663–1669

[101] Agarwala M K, Weeren R, Bandyopadhyay A, Whalen P J, Safari A, Danforth S C. Fused deposition of ceramics and metals: an overview. In: Proceeding of Solid Freeform Fabrication Symposium. Austin, TX, 1996

[102] Sun W, Dcosta D J, Lin F, El-Raghy T. Freeform fabrication of Ti₃SiC₂ powder-based structures, part I – integrated fabrication process. Journal of Materials Processing Technology, 2002, 127(3): 343–351

[103] Leu M C, Pattnaik S, Hilmas G E. Optimization of selective laser sintering process for fabrication of zirconium diboride parts. In: Proceeding of International Solid Freeform Fabrication Symposium. Austin, TX, 2010

[104] Phenix Systems. http://www.phenix-systems.com/home_en.php

[105] Guo N, Leu M C. Effect of different graphite materials on electrical conductivity and flexural strength of bipolar plates fabricated by selective laser sintering. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2010

[106] Goodridge R D, Dalgarno K W, Wood D J. Indirect selective laser sintering of an apatite-mullite glass-ceramic for potential use in bone replacement applications. Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine, 2006, 220(1): 57–68

[107] Griffith M L, Halloran J W. Freeform fabrication of ceramics via stereolithography. Journal of the American Ceramic Society, 1996, 79(10): 2601–2608

[108] Dufaud O, Corbel S. Stereolithography of PZT ceramic suspensions. Rapid Prototyping Journal, 2002, 8(2): 83–90

[109] Hinczewski C, Corbel S, Chartier T. Ceramic suspensions suitable for stereolithography. Journal of the European Ceramic Society, 1998, 18(6): 583–590

[110] Wilkes J, Hagedorn Y C, Meiners W, Wissenbach K. Additive manufacturing of ZrO₂–Al₂O₃ ceramic components by selective laser melting. Rapid Prototyping Journal, 2013, 19(1): 51–57

[111] Balla V K, Bose S, Bandyopadhyay A. Processing of bulk alumina ceramics using laser engineered net shaping. International Journal of Applied Ceramic Technology, 2008, 5(3): 234–242

[112] Kumar S, Kruth J P. Composites by rapid prototyping technology. Materials & Design, 2010, 31(2): 850–856

[113] Klosterman D, Chartoff R, Graves G, Osborne N, Priore B. Interfacial characteristics of composites fabricated by laminated object manufacturing. Compos Part A, 1998, 29(9-10): 1165–1174

[114] Wiria F E, Leong K F, Chua C K, Liu Y. Poly-epsilon-caprolactone/hydroxyapatite for tissue engineering scaffold fabrication via selective laser sintering. Acta Biomaterialia, 2007, 3(1): 1–12

[115] Eosoly S, Lohfeld S, Brabazon D. Effect of hydroxyapatite on biodegradable scaffolds fabricated by SLS. Key Engineering Materials, 2009, 396-398: 659–662

[116] Leong C C, Lu L, Fuh J Y H, Wong Y S. In-situ formation of copper matrix composites by laser sintering. Materials Science and Engineering A, 2002, 338(1-2): 81–88

[117] Evans R S, Bourell D L, Beaman J J, Campbell M I. Rapid manufacturing of silicon carbide composites. In: Proceedings of Solid Freeform Fabrication Symposium. Austin, TX, 2004

[118] Stevinson B Y, Bourell D L, Beaman J J. Over-infiltration mechanisms in selective laser sintered Si/SiC preforms. Rapid Prototyping Journal, 2008, 14(3): 149–154

[119] Suwanprateeb J, Sanngam R, Suvannapruk W, Panyathanmaporn T. Mechanical and in vitro performance of apatite-wollastonite glass ceramic reinforced hydroxyapatite composite fabricated by 3D-printing. Journal of Materials Science. Materials in Medicine, 2009, 20(6): 1281–1289

[120] Rambo C R, Travitzky N, Zimmermann K, Greil P. Synthesis of TiC/Ti-Cu composites by pressureless reactive infiltration of TiCu alloy into carbon performs fabricated by 3D-printing. Materials Letters, 2005, 59(8-9): 1028–1031

[121] Nikzad M, Masood S H, Sbarski I, Groth A. Rheological properties of a particulate-filled polymeric composite through fused deposition process. Materials Science Forum, 2010, 654-656: 2471–2474

[122] Zhong W, Li F, Zhang Z, Song L, Li Z. Short fiber reinforced composites for fused deposition modeling. Materials Science and Engineering, 2001, A301: 125–130

[123] Shofner M L, Lozano K, Rodriguez-Macias F J, Barrera E V. Nanofiber-reinforced polymers prepared by fused deposition modeling. Journal of Applied Polymer Science, 2003, 89: 3081–3090

[124] Klosterman D, Chartoff R, Agarwala M, Fiscus I, Murphy J, Cullen S, Yeazell M. Direct fabrication of polymer composite structures with curved LOM. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 1999: 401–409

[125] Klosterman D A, Chartoff R P, Osborne N R, Graves G A, Lightman A, Han G, Bezeredi A, Rodrigues S. Curved layer LOM of ceramics and composites. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 1998: 671–680

[126] Jackson T R, Liu H, Patrikalakis N M, Sachs E M, Cima M J. Modelling and designing functionally graded material components for fabrication with local composition control. Materials & Design, 1999, 20(2-3): 63–75

[127] Bandyopadhyay A, Krishna B V, Xue W, Bose S. Application of laser engineered net shaping (LENS) to manufacture porous and functionally graded structures for load bearing implants. Journal of Materials Science. Materials in Medicine, 2009, 20(S1 Suppl 1): 29–34

[128] Vamsi Krishna B, Xue W, Bose S, Bandyopadhyay A. Functionally graded Co-Cr-Mo coating on Ti-6Al-4V alloy structures. Acta Biomaterialia, 2008, 4(3): 697–706

[129] Liu W, DuPont J N. Fabrication of functionally graded TiC/Ti composites by laser engineered net shaping. Scripta Materialia, 2003, 48(9): 1337–1342

[130] Domack M S, Baughman J M. Development of nickel-titanium graded composition components. Rapid Prototyping Journal, 2005, 11(1): 41–51

[131] Wang F, Mei J, Wu X. Compositionally graded Ti6Al4V+ TiC made by direct laser fabrication using powder and wire. Materials & Design, 2007, 28(7): 2040–2046

[132] Leu M C, Tang L, Deuser B, Landers R G, Hilmas G E, Zhang S, Watts J. Freeze-form extrusion fabrication of composite structures. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2011, 111–124

[133] Optomec. http://www.optomec.com/

[134] Concept Laser Gmb H. http://www.concept-laser.de/

[135] Morris Technologies. http://www.morristech.com/

[136] Prometal R C T. http://www.prometal-rct.com/

[137] Hedges M, Calder N. Near net shape rapid manufacture & repair by LENS. In: Cost Effective Manufacture via Net-shape Processing. Neuilly-sur-Seine, France, 2006, 13–1-4

[138] Kelbassa I, Gasser A, Wissenbach K. Laser cladding as a repair technique for blisks out of titanium and nickel based alloys used in aero engines. In: Proceedings of the 1st Pacific International Conference on Application of Lasers and Optics. Melbourne, 2004

[139] Xue L, Islam M U. Laser consolidation–a novel one-step manufacturing process for making net-shape functional components. In: Cost Effective Manufacturing via Net-Shape Processing. Neuilly-sur-Seine, France, 2006, 15–1-4

[140] Richter K H, Orban S, Nowotny S. Laser cladding of the titanium alloy Ti6242 to restore damaged blades. In: Proceedings of the 23rd International Congress on Applications of Lasers and Electro-Optics. 2004

[141] Qi H, Azer M, Singh P. Adaptive toolpath deposition method for laser net shape manufacturing and repair of turbine compressor airfoils. International Journal of Advanced Manufacturing Technology, 2010, 48(1-4): 121–131

[142] Liou F, Slattery K, Kinsella M, Newkirk J, Chou H N, Landers R. Applications of a hybrid manufacturing process for fabrication of metallic structures. Rapid Prototyping Journal, 2007, 13(4): 236–244

[143] Liou F W, Choi J, Landers R G, Janardhan V, Balakrishnan S N, Agarwal S. Research and development of a hybrid rapid manufacturing process. In: Proceedings of Solid Freeform Fabrication Symposium. Austin, TX, 2001

[144] Ren L, Padathu A P, Ruan J, Sparks T, Liou F W. Three dimensional die repair using a hybrid manufacturing system. In: Proceedings of Solid Freeform Fabrication Symposium. Austin, TX, 2006

[145] Bae C J. Integrally cored ceramic investment casting mold fabricated by ceramic stereolithography. Dissertation for Doctor Degree. University of Michigan, 2008

[146] Wu H, Li D, Guo N. Fabrication of integral ceramic mold for investment casting of hollow turbine blade based on stereolithography. Rapid Prototyping Journal, 2009, 15(4): 232–237

[147] Wu H, Li D, Tang Y, Guo N, Sun B, Xu D. Rapid casting of hollow turbine blade using integral ceramic moulds. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2009, 223(6): 695–702

[148] Murr L E, Gaytan S M, Medina F, Martinez E, Martinez J L, Hernandez D H, Machado B I, Ramirez D A, Wicker R B. Characterization of Ti6Al4V open cellular foams fabricated by additive manufacturing using electron beam melting. Materials Science and Engineering A, 2010, 527(7-8): 1861–1868

[149] Gaytan S, Murr L, Medina F, Martinez E, Martinez L, Wicker R. Fabrication and characterization of reticulated, porous mesh arrays and foams for aerospace applications by additive manufacturing using electron beam melting. In: Proceedings of Minerals, Metals and Materials Society/AIME. Warrendale PA, 2010

[150] Daneshmand S, Adelnia R, Aghanajafi S. Design and production of wind tunnel testing models with selective laser sintering technology using glass-reinforced Nylon. Materials Science Forum, 2006, 532-533: 653–656

[151] Technology CRP. http://www.crptechnology.com

[152] Vilaro T, Abed S, Knapp W.Direct manufacturing of technical parts using selective laser melting: example of automotive application. In: Proceedings of 12th European Forum on Rapid Prototyping. 2008

[153] Rosochowski A, Matuszak A. Rapid tooling: the state of the art. Journal of Materials Processing Technology, 2000, 106(1-3): 191–198

[154] Bassoli E, Gatto A, Iuliano L, Violante M G. 3D printing technique applied to rapid casting. Rapid Prototyping Journal, 2007, 13(3): 148–155

[155] Murr L E, Gaytan S M, Ceylan A, Martinez E, Martinez J L, Hernandez D H, Machado B I, Ramirez D A, Medina F, Collins S. Characterization of titanium aluminide alloy components fabricated by additive manufacturing using electron beam melting. Acta Materialia, 2010, 58(5): 1887–1894

[156] Ilardo R, Williams C B. Design and manufacture of a formula SAE intake system using fused deposition modeling and fiber-reinforced composite materials. Rapid Prototyping Journal, 2010, 16(3): 174–179

[157] Chang R, Emami K, Wu H, Sun W. Biofabrication of a three-dimensional liver micro-organ as an in vitro drug metabolism model. Biofabrication, 2010, 2(4): 045004

[158] Adler Ortho Group. http://www.alaortho.com/indBigEng.htm. Accessed in 2010

[159] Liu Q, Leu M C, Schmitt S M. Rapid prototyping in dentistry: technology and application. International Journal of Advanced Manufacturing Technology, 2006, 29(3-4): 317–335

[160] Vandenbroucke B, Kruth J P. Selective laser melting of biocompatible metal for rapid manufacturing of medical parts. Rapid Prototyping Journal, 2007, 13(4): 196–203

[161] Peltola S M, Melchels F P, Grijpma D W, Kellomäki M. A review of rapid prototyping techniques for tissue engineering purposes. Annals of Medicine, 2008, 40(4): 268–280

[162] Cooke M N, Fisher J P, Dean D, Rimnac C, Mikos A G. Use of stereolithography to manufacture critical-sized 3D biodegradable scaffolds for bone ingrowth. Journal of biomedical materials research. Part B, Applied biomaterials, 2003, 64(2): 65–69

[163] Kolan K C, Leu M C, Hilmas G E, Velez M. Selective laser sintering of 13-93 bioactive glass. In: Proceeding of the Solid Freeform Fabrication Symposium. Austin, TX, 2010

[164] Liu Y F, Dong X T, Zhu F D. Overview of rapid prototyping for fabrication of bone tissue engineering scaffold. Advanced Materials Research, 2010, 102-104: 550–554

[165] Rezwan K, Chen Q Z, Blaker J J, Boccaccini A R. Biodegradable and bioactive porous polymer/inorganic composite scaffolds for bone tissue engineering. Biomaterials, 2006, 27(18): 3413–3431

[166] Melchels F P W, Feijen J, Grijpma D W. A review on stereolithography and its applications in biomedical engineering. Biomaterials, 2010, 31(24): 6121–6130

[167] Chim H, Hutmacher D W, Chou A M, Oliveira A L, Reis R L, Lim T C, Schantz J T. A comparative analysis of scaffold material modifications for load-bearing applications in bone tissue engineering. International Journal of Oral and Maxillofacial Surgery, 2006, 35(10): 928–934

[168] Zein I, Hutmacher D W, Tan K C, Teoh S H. Fused deposition modeling of novel scaffold architectures for tissue engineering applications. Biomaterials, 2002, 23(4): 1169–1185

[169] Lorrison J C, Goodridge R D, Dalgarno K W, Wood D J. Selective laser sintering of bioactive glass-ceramics. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2002

[170] Weinand C, Pomerantseva I, Neville C M, Gupta R, Weinberg E, Madisch I, Shapiro F, Abukawa H, Troulis M J, Vacanti J P. Hydrogel-β-TCP scaffolds and stem cells for tissue engineering bone. Bone, 2006, 38(4): 555–563

[171] Williams J M, Adewunmi A, Schek R M, Flanagan C L, Krebsbach P H, Feinberg S E, Hollister S J, Das S. Bone tissue engineering using polycaprolactone scaffolds fabricated via selective laser sintering. Biomaterials, 2005, 26(23): 4817–4827

[172] Tan K H, Chua C K, Leong K F, Cheah C M, Cheang P, Abu Bakar M S, Cha S W. Scaffold development using selective laser sintering of polyetheretherketone-hydroxyapatite biocomposite blends. Biomaterials, 2003, 24(18): 3115–3123

[173] Arcaute K, Mann B K, Wicker R B. Stereolithography of three-dimensional bioactive poly(ethylene glycol) constructs with encapsulated cells. Annals of Biomedical Engineering, 2006, 34(9): 1429–1441

[174] Dhariwala B, Hunt E, Boland T. Rapid prototyping of tissue-engineering constructs, using photopolymerizable hydrogels and stereolithography. Tissue Engineering, 2004, 10(9-10): 1316–1322

[175] Dellinger J G, Eurell J A C, Stewart M, Jamison R D. Bone response to 3D periodic hydroxyapatite scaffolds with and without tailored microporosity to deliver bone morphogenetic protein 2. Journal of Biomedical Materials Research. Part A, 2 006, 76(2): 366–376

[176] Shor L, Güçeri S, Chang R, Gordon J, Kang Q, Hartsock L, An Y, Sun W. Precision extruding deposition (PED) fabrication of polycaprolactone (PCL) scaffolds for bone tissue engineering. Biofabrication, 2009, 1(1): 015003

[177] Kolan K C, Doiphode N D, Leu M C. Selective laser sintering and freeze extrusion fabrication of scaffolds for bone repair using 13-93 bioactive glass: a comparison. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, Texas, 2010

[178] Kolan K C, Leu M C, Hilmas G E, Brown R F, Velez M. Fabrication of 13-93 bioactive glass scaffolds for bone tissue engineering using indirect selective laser sintering. Biofabrication, 2011, 3(2): 025004

[179] Lin L, Ju S, Cen L, Zhang H, Hu Q. Fabrication of porous β-TCP scaffolds by combination of rapid prototyping and freeze drying technology. IFMBE Proceedings, 2008, 19(4): 88–91

[180] Chen Z, Li D, Lu B, Tang Y, Sun M, Wang Z. Fabrication of artificial bioactive bone using rapid prototyping. Rapid Prototyping Journal, 2004, 10(5): 327–333

[181] Mironov V, Trusk T, Kasyanov V, Little S, Swaja R, Markwald R. Biofabrication: a 21st century manufacturing paradigm. Biofabrication, 2009, 1(2): 022001

[182] Cui X, Boland T. Human microvasculature fabrication using thermal inkjet printing technology. Biomaterials, 2009, 30(31): 6221–6227

[183] Boland T, Xu T, Damon B, Cui X. Application of inkjet printing to tissue engineering. Biotechnology Journal, 2006, 1(9): 910–917

[184] Wilson W C Jr, Boland T. Cell and organ printing 1: protein and cell printers. The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology, 2003, 272(2): 491–496

[185] Boland T, Mironov V, Gutowska A, Roth E A, Markwald R R. Cell and organ printing 2: fusion of cell aggregates in three-dimensional gels. The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology, 2003, 272(2): 497–502

[186] Mironov V, Boland T, Trusk T, Forgacs G, Markwald R R. Organ printing: computer-aided jet-based 3D tissue engineering. Trends in Biotechnology, 2003, 21(4): 157–161

[187] U.S. Department of Energy. Future fuel cells R&D. http://www.fossil.energy.gov/programs/powersystems/fuelcells/. Accessed in 2010

[188] Chen S, Bourell D L, Wood K L. Fabrication of PEM fuel cell bipolar plates by indirect SLS. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2004, 244–256

[189] Chen S, Murphy J, Herlehy J, Bourell D L, Wood K L. Development of SLS fuel cell current collectors. Rapid Prototyping Journal, 2006, 12(5): 275–282

[190] Alayavalli K, Bourell D L. Fabrication of electrically conductive, fluid impermeable direct methanol fuel cell (DMFC) graphite bipolar plates by indirect selective laser sintering (SLS). In: Proceedings of the International Solid Freeform Fabrication Symposium. Austin, TX, 2008, 186–193

[191] Alayavalli K, Bourell D L. Fabrication of modified graphite bipolar plates by indirect selective laser sintering (SLS) for direct methanol fuel cells. Rapid Prototyping Journal, 2010, 16(4): 268–274

[192] Guo N, Leu M C. Effect of different graphite materials on the electrical conductivity and flexural strength of bipolar plates fabricated using selective laser sintering. International Journal of Hydrogen Energy, 2012, 37(4): 3558–3566

[193] Bourell D L, Leu M C, Chakravarthy K, Guo N, Alayavalli K. Graphite-based indirect laser sintered fuel cell bipolar plates containing carbon fiber additions. CIRP Annals-Manufacturing Technology, 2011, 60(1): 275–278

[194] Guo N, Leu M C. Experimental study of polymer electrolyte membrane fuel cells using a graphite composite bipolar plate fabricated by selective laser sintering. In: Proceeding of the Solid Freeform Fabrication Symposium. Austin, TX, 2012

[195] Guo N, Leu M C, Wu M. Bio-inspired design of bipolar plate flow fields for polymer electrolyte membrane fuel cells. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2011

[196] Wu M, Leu M C, Guo N. Simulation and testing of polymer electrolyte membrane fuel cell bipolar plates fabricated by selective laser sintering. In: Proceedings of ASME 2012 International Symposium on Flexible Automation. St. Louis, MO, 2012

[197] Taghipour E, Leu M C, Guo N. Comparison of compression molding and selective laser sintering processes in the development of composite bipolar plates for proton exchange membrane fuel cells. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, TX, 2012

[198] Bourell D L, Leu M C, Rosen D W. Roadmap for additive manufacturing: identifying the future of freeform processing. The University of Texas at Austin, Laboratory for Freeform Fabrication. Austin, TX, 2009, 7–10

[199] Xue L, Purcell C. Laser consolidation of net-shape shells for flextensional sonar projectors. In: Proceedings of ICALEO. Scottsdale, AZ, 2006

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