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Fig 4.3 Parts being tested with Hounsfield Testing equipment
Table 4.2 Maximum compressive load after a curing time of 48 hours
Trial No. Curvature Speed Style Strength1 Strength2 Average
1 Low Low Flat 112 124 118
2 Low Low Curved 136 164 150
3 Low High Flat 88 116 102
4 Low High Curved 131 93 112
5 High Low Flat 117 147 132
6 High Low Curved 138 218 178
7 High High Flat 180 300 240
8 High High Curved 147 209 178
The S/N ratios for the results in Table 4.2 are calculated and are shown in Fig. 4.4. It
is clear from these graphs that the larger curvature, higher speed and curved layer
deposition style are the most favourable in terms of achieving the maximum
response, in this case the maximum compressive load the curved components can
withstand. This is a clear indication of the superiority of the curved parts. Though a
few other responses could be developed based on the calculations of 3-point
bending tests, the current results are discussed just based on the maximum
compressive load values, as the main aim is to establish the relative merits of curved
layer deposition.
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