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2.10 Transition States of model manufactured via Layered Manufacturing...............50 2.11 An example of a sliced CAD file........................................................................52 2.12 A model being printed with perpendicular tool path...........................................53 2.13 Main Part...........................................................................................................59 2.14 Support structure part........................................................................................59 2.15 Cutter Path Data................................................................................................60 3.1 The deposition head............................................................................................65 3.2 Fab at home chassis after assembly...................................................................66 3.3 Electronics – Assembled view.............................................................................70 3.4 Fab at <strong>Home</strong> software – User Interface control...................................................71 3.5 The fully assembled Fab at home in operation....................................................72 3.6 RTV Silicone........................................................................................................74 3.7 Fab epoxy tub and tube forms available for use with the Fabber........................77 3.8 Test samples printed with silicon and fabepoxy..................................................79 3.9 Main Part structure..............................................................................................80 3.10 Support structure dimensions............................................................................80 3.11 Support structure printed with Silicon................................................................81 3.12 A flat layer part being printed on the Fab at home machine..............................82 3.13 Flat and curved layer parts being printed side by side on the Fab at home machine.....................................................................................................................83 3.14 Model 2 – Main part and support structure model.............................................83 4.1 Series of parts being printed as per design of experiments.................................96 4.2 Flat and curved layer polished parts....................................................................96 x
4.3 Parts being tested with Hounsfield Testing equipment........................................97 4.4 Main effects plot for SN Ratio’s...........................................................................98 4.5 Main Effects for SN Ratios.................................................................................100 5.1 Thin shell-type part considered for the FEA......................................................105 5.2 Mesostructure of the cross section of the solid model.......................................107 5.3 Basic shape of the flat layer model....................................................................107 5.4 Solid model simulating the material structure of the flat layered FDM part.......108 5.5 Solid model simulating the material structure of the curved layer FDM part.....108 5.6 Load-Displacement diagram of Fabepoxy.........................................................111 5.7 Stress-strain diagram of Fabepoxy....................................................................112 5.8 The finite element mesh used for the flat layer model.......................................113 5.9 The finite element model used for the curved layer model................................113 5.10 load and boundary conditions in the case of the flat layer FDM model...........114 5.11 Load and boundary conditions in the case of the curved layer FDM part........115 5.12 Time dependent variation in load and vertical displacement in flat layer FDM model................................................................................................................117-118 5.13 Variation of compressive load and vertical deflection with time: curved layer FDM model..............................................................................................................119 5.14 Distribution of stress component in the vertical direction: Curved layer FDM Model.......................................................................................................................120 5.15 Overall deflection pattern of the Flat layer FDM model...................................120 5.16 Overall deflection pattern in Curved layer FDM Model....................................120 xi
Page 1 and 2: An Investigation into curved layer
Page 3 and 4: Contents Abstract..................
Page 5 and 6: 3.5.2 Fabepoxy.....................
Page 7 and 8: methodology to print simple curved
Page 9: List of Figures 1.1 The Rapid proto
Page 13 and 14: List of Abbreviations 3D: Three dim
Page 15 and 16: Fig 1.1 The Rapid prototyping Cycle
Page 17 and 18: 1.1.1 Stereolithography Stereolitho
Page 19 and 20: The object to be made is first mode
Page 21 and 22: 1.1.5 Laser Engineered Net Shaping
Page 23 and 24: 1.2 Fused Deposition Modeling A det
Page 25 and 26: Fig 1.8 Deposition Head Different t
Page 27 and 28: 900mc is capable of producing parts
Page 29 and 30: noted that the parts built in this
Page 31 and 32: structure. Honeycomb scaffold archi
Page 33 and 34: optimal direction to build a part t
Page 35 and 36: processing treatment was analyzed w
Page 37 and 38: The actual influence of the curved
Page 39 and 40: Separating the Main part with its s
Page 41 and 42: limited to simple models. It could
Page 43 and 44: Fig 2.2 Faces, Edges and Vertices o
Page 45 and 46: 2.1.5 Constructive Solid Geometry C
Page 47 and 48: A STL file is a triangular represen
Page 49 and 50: Fig 2.8 A sample Binary STL File Sl
Page 51 and 52: Different processes may either vary
Page 53 and 54: At the very outset of generating th
Page 55 and 56: and correction of each point to sat
Page 57 and 58: apid prototyping machine are remove
Page 59 and 60: Fig 2.13 Main Part Fig 2.14 Support
Page 61 and 62:
As this text file is to be used wit
Page 63 and 64:
mounted to the axes carriage. Timin
Page 65 and 66:
Fig 3.1 The deposition head At the
Page 67 and 68:
3.2.3 Assembling Electronics and ca
Page 69 and 70:
microcontroller is now disconnected
Page 71 and 72:
The relationship between test point
Page 73 and 74:
on the mechanical properties and po
Page 75 and 76:
3.5.1 Silicone with other materials
Page 77 and 78:
Fab@home machine. Since our require
Page 79 and 80:
are printed using the two suitable
Page 81 and 82:
The support structure‟s dimension
Page 83 and 84:
machine Fig 3.13 Flat and curved la
Page 85 and 86:
4.1 Experimental conditions Chapter
Page 87 and 88:
have many factors from contention a
Page 89 and 90:
4.3 Taguchi methods There are two t
Page 91 and 92:
Such steps usually identify the nee
Page 93 and 94:
Nominal is best Larger is better S
Page 95 and 96:
Control of material flow - The lead
Page 97 and 98:
Fig 4.3 Parts being tested with Hou
Page 99 and 100:
values in all cases are almost doub
Page 101 and 102:
level. The other parameters were in
Page 103 and 104:
The finite element method has had a
Page 105 and 106:
performance of finished FDM parts [
Page 107 and 108:
ehaviour with failure occurring at
Page 109 and 110:
Fig. 2 (a) is the thin curved part
Page 111 and 112:
Table 5.1 Property data: Fabepoxy M
Page 113 and 114:
optimum number. The final finite el
Page 115 and 116:
Fig. 5.11 Load and boundary conditi
Page 117 and 118:
overall deflection pattern of two s
Page 119 and 120:
Fig. 5.13 Variation of compressive
Page 121 and 122:
Fig. 5.15 shows the overall deforma
Page 123 and 124:
The effectiveness of the deposition
Page 125 and 126:
[11] M. Greul, T. Pintat, M. Greuli
Page 127 and 128:
[32] Philip J. Ross, 1988, “Taguc
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