One of the fundamental characteristics of additively processed materials is that they are naturally anisotropic; this variance in mechanical properties is primarily generated through the formulation of patterned shell and in-filled regions within the material during processing. This paper describes the formulation and results of a study to ascertain the impact strength of various full–infill polymer-based materials processed in various orientations and angles via fused deposition modeling. Ten different materials were tested using seven different hatch angles and three print orientations. Seven different pure materials were tested, as well as three composites; these were acrylonitrile butadiene styrene, standard polylactic acid, high-temperature polylactic acid, high-impact polystyrene, nylon, polyethylene terephthalate + glycol, polycarbonate, aluminum polylactic acid, wood polylactic acid, and carbon–fiber polylactic acid. All experiments were carried out using ASTM IZOD Type E tests with a 2.7J pendulum. Five replications of each test combination were collected, for a total of 1050 tests. The results showed that the shell orientation and raster angle were primary drivers in determining impact properties, as they strongly influenced the crack length and path though the material during fracture. This was especially clear for the polycarbonate, nylon, and polyethylene terephthalate + glycol which underwent large plastic deformation during the tests. It was further observed that the impact toughness was inversely correlated with test repeatability, with the toughest materials having the highest variability between test replications.
ASTM. ASTM F2792-12a: Standard terminology for additive manufacturing technologies. West Conshohocken, PA: ASTM International, 2012.
2.
GuoNLeuMC. Additive manufacturing: technology, applications and research needs. Front Mech Eng2013; 8: 215–243.
3.
AhnSHMonteroMOdellD, et al.Anisotropic material properties of fused deposition modeling ABS. Rapid Prototyping J2002; 8: 248–257.
4.
SoodAKOhdarRMahapatraS. Parametric appraisal of mechanical property of fused deposition modelling processed parts. Mater Design2010; 31: 287–295.
5.
KunzeKEtterTGrässlinJ, et al.Texture, anisotropy in microstructure and mechanical properties of IN738lc alloy processed by selective laser melting (SLM). Mater Sci Eng A2015; 620: 213–222.
6.
HitzlerLHirschJHeineB, et al.On the anisotropic mechanical properties of selective laser-melted stainless steel. Materials2017; 10: 1136.
7.
AlaimoGMarconiSCostatoL, et al.Influence of meso-structure and chemical composition on FDM 3d-printed parts. Compos Part B Eng2017; 113: 371–380.
8.
SomireddyMCzekanskiA. Mechanical characterization of additively manufactured parts by FE modeling of mesostructure. J Manufact Mater Process2017; 1: 18.
9.
YuHZCrossSRSchuhCA. Mesostructure optimization in multi-material additive manufacturing: a theoretical perspective. J Mater Sci2017; 52: 4288–4298.
10.
KalenticsNBoillatEPeyreP, et al.Tailoring residual stress profile of selective laser melted parts by laser shock peening. Additive Manufac2017; 16: 90–97.
11.
Tammas-WilliamsSTodd I. Design for additive manufacturing with site-specific properties in metals and alloys. Scripta Materialia2017; 135: 105–110.
12.
GarciaDJonesMEZhuY, et al.Mesoscale design of heterogeneous material systems in multi-material additive manufacturing. J Mater Res2017; 33: 58–67.
13.
Pei E and Loh GH. Future challenges in functionally graded additive manufacturing. In Additive manufacturing—developments in training and education. Springer International Publishing, 2018, pp.219–228.
14.
Srivastava M, Rathee S, Maheshwari S, et al. Design and processing of functionally graded material: review and current status of research. In 3D Printing and additive manufacturing technologies. Springer Singapore, 2018, pp.243–255.
15.
Chua CK, Wong CH and Yeong WY. Standards, Quality Control, and Measurement Sciences in 3-D printing and Additive Manufacturing. London: Academic Press, Elsevier 2017, pp. 95–137.
16.
Caputo D, Aprea P, Gargiulo N, et al. The role of materials and products characterization in the additive manufacturing industry. In: 2017 IEEE 3rd international forum on research and technologies for society and industry (RTSI). Modena, Italy, 11 September-13 September 2017. IEEE.
17.
DizonJRCEsperaAHChenQ, et al.Mechanical characterization of 3d-printed polymers. Additive Manufac2018; 20: 44–67.
18.
Patterson AE. Crack propagation in 3-D printed PLA: Finite element modeling, test bed design, and preliminary experimental results. Technical report, University of Illinois at Urbana–Champaign, Department of Industrial and Enterprise Systems Engineering, 2018, http://hdl.handle.net/2142/100334 (accessed 4 September 2018).
19.
MessimerSLPattersonAEMunaN, et al.Characterization and processing behavior of heated aluminum-polycarbonate composite build plates for the FDM additive manufacturing process. J Manufac Mater Process2018; 2: 12 .
20.
TurnerBNStrongRGoldSA. A review of melt extrusion additive manufacturing processes: I. process design and modeling. Rapid Prototyping J2014; 20: 192–204.
21.
Fernandez-VicenteMCalleWFerrandizS, et al.Effect of infill parameters on tensile mechanical behavior in desktop 3d printing. 3D Printing Additive Manufac2016; 3: 183–192.
22.
PopescuDZapciuAAmzaC, et al.FDM process parameters influence over the mechanical properties of polymer specimens: a review. Polymer Testing2018; 69: 157–166.
23.
AwYYYeohCKIdrisMA, et al.Effect of printing parameters on tensile, dynamic mechanical, and thermoelectric properties of FDM 3d printed CABS/ZnO composites. Materials2018; 11: 466.
24.
AngKCLeongKFChuaCK, et al.Investigation of the mechanical properties and porosity relationships in fused deposition modelling-fabricated porous structures. Rapid Prototyping J2006; 12: 100–105.
25.
NuñezPRivasAGarcía-PlazaE, et al.Dimensional and surface texture characterization in fused deposition modelling (FDM) with ABS plus. Procedia Eng2015; 132: 856–863.
26.
Doubrovski Z, Verlinden JC and Geraedts JMP. Optimal design for additive manufacturing: opportunities and challenges. In: Volume 9: 23rd International conference on design theory and methodology; 16th design for manufacturing and the life cycle conference, Washington, DC, 28 August-31 August 2011, pp. 635–646. ASME.
27.
SinghJSinghRSinghH. Repeatability of linear and radial dimension of ABS replicas fabricated by fused deposition modelling and chemical vapor smoothing process: a case study. Measurement2016; 94: 5–11.
28.
ZeinIHutmacherDWTanKC, et al.Fused deposition modeling of novel scaffold architectures for tissue engineering applications. Biomaterials2002; 23: 1169–1185.
29.
VillalpandoLEiliatHUrbanicR. An optimization approach for components built by fused deposition modeling with parametric internal structures. Procedia CIRP2014; 17: 800–805.
SomireddyMCzekanskiASinghCV. Development of constitutive material model of 3d printed structure via FDM. Mater Today Commun2018; 15: 143–152.
32.
DelissenARadaelliGShawLA, et al.Design of an isotropic metamaterial with constant stiffness and zero Poisson's ratio over large deformations. J Mech Design2018; 140: 111405.
33.
Spadaccini C, Jackson J, Watts S, et al. Integrated computational materials engineering (ICME) approaches to the design and fabrication of architected materials. In: 58th AIAA/ASCE/AHS/ASC structures, structural dynamics, and materials conference, Grapevine, Texas, 9 January-13 January 2017, AIAA2017-1543.
34.
ASTM. ASTM D256-10e1: Standard test methods for determining the Izod pendulum impact resistance of plastics. ASTM International, West Conshohocken, Pennsylvania, USA. 2018.
CasiraghiT. The fracture mechanics of polymers at high rates. Polym Eng Sci1978; 18: 833–839.
37.
TvergaardVNeedlemanA. Effect of material rate sensitivity on failure modes in the charpy v-notch test. J Mech Phys Solids1986; 34: 213–241.
38.
TvergaardVNeedlemanA. An analysis of thickness effects in the izod test. Int J Solids Struct2008; 45: 3951–3966.
39.
ArgonACohenR. Toughenability of polymers. Polymer2003; 44: 6013–6032.
40.
WuSXMaiYWCotterellB, et al.Ductile-brittle fracture transition due to increasing crack length in a medium carbon steel. Acta Metallurgica et Materialia1991; 39: 2527–2532.
Hertzberg R. Deformation and fracture mechanics of engineering materials. New York: John Wiley, 1996.
43.
RobersonDAPerezARTShemelyaCM, et al.Comparison of stress concentrator fabrication for 3d printed polymeric izod impact test specimens. Additive Manufac2015; 7: 1–11.
44.
Upadhyay K, Dwivedi R and Singh AK. Determination and comparison of the anisotropic strengths of fused deposition modeling p400 ABS. In Advances in 3D printing & additive manufacturing technologies. Singapore: Springer, 2016, pp.9–28.
45.
CamineroMChacónJGarcía-MorenoI, et al.Impact damage resistance of 3d printed continuous fibre reinforced thermoplastic composites using fused deposition modelling. Compos Part B Eng2018; 148: 93–103.
46.
Sauer MJ. Evaluation of the mechanical properties of 3D printed carbon fiber composites. Master's Thesis, South Dakota State University, Brookings, South Dakota, USA, 2018.
47.
GardanJMakkeARechoN. A method to improve the fracture toughness using 3d printing by extrusion deposition. Procedia Struct Integrity2016; 2: 144–151.
48.
BenwoodCAnsteyAAndrzejewskiJ, et al.Improving the impact strength and heat resistance of 3d printed models: structure, property, and processing correlationships during fused deposition modeling (FDM) of poly(lactic acid). ACS Omega2018; 3: 4400–4411.
49.
MessimerSRocha PereiraTPattersonA, et al.Full-density fused deposition modeling dimensional error as a function of raster angle and build orientation: large dataset for eleven materials. J Manufac Mater Process2019; 3: 6.
50.
YangHSKimHJSonJ, et al.Rice-husk flour filled polypropylene composites: mechanical and morphological study. Compos Struct2004; 63: 305–312.
51.
PlackettDAndersenTLPedersenWB, et al.Biodegradable composites based on l-polylactide and jute fibres. Compos Sci Technol2003; 63: 1287–1296.
52.
ShunmugasamyVCAnantharamanHPinisettyD, et al.Unnotched izod impact characterization of glass hollow particle/vinyl ester syntactic foams. J Compos Mater2013; 49: 185–197.
53.
Black JT and Kohser RA. DeGarmo's materials and processes in manufacturing (11th ed.). Hoboken: Wiley, 2011.
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