...
Specimen | L = Support Span (mm) | b = Width of test beam (mm) | d = depth of beam (mm) | m (N/mm) |
|---|---|---|---|---|
1 | 31.6 | 16.51, 15.92, 15.53 avg = 15.987 | 1.15, 1.33, 1.09 avg = 1.19 | 120 |
2 | 31.6 | 14.63, 15.61, 14.39 avg = 14.877 | 1.38, 1.59, 1.42 avg = 1.463 | 94 |
3 | 31.6 | 15.24, 15.35, 15.10 avg = 15.23 | 0.98, 0.96, 0.93 avg = 0.957 | 35.7 |
4 | 31.6 | 13.70, 14.42, 14.62 avg = 14.247 | 0.98, 0.92, 0.92 avg = 0.94 | 10.4 |
Graphs of Specimens
General Comment:
It shows that the specimens peaked and then its performance began to deteriorate or plateau. When it peaks, the fibres break and loses its structural properties.
...
Figure #1: Load and Deflection of Specimen 1. Max Force is about 72N at 0.5mm deflection
...
Figure #2: Load and Deflection of Specimen 2. Max force is about 87N at 0.9 mm deflection
...
Figure #3: Load and Deflection of Specimen 3. Max force is 50N at 1.4mm deflection
...
Figure #4: Load and Deflection of Specimen 4. Max force is 13N at 1.25mm deflection
Numerical Results
Table #3: Structural Properties of Specimens at their peak performance during testing
Specimen | Flexural Stress (MPa) | Flexural Strain (mm/mm) | Flexural Modulus (MPa) |
|---|---|---|---|
1 | 150.7474382 | 0.012870534 | 35137.81 |
2 | 129.5071002 | 0.007911593 | 15917.72 |
3 | 169.9122016 | 0.008050393 | 21097.63 |
4 | 48.94885783 | 0.007060167 | 6933.102 |
General Comments:
There can be variation in performance based on where the sample was collected on the bottom panel. Not all specimens were the same initial thickness or stiffness.