A bar of Al2O3 that is 0.25 in. thick, 0.5 in. wide, and 9 in. long is tested in a threepoint bending apparatus with the supports located 6 in. apart. The deflection of the center of the bar is measured as a function of the applied load. The data are shown below. Determine the flexural strength and the flexural modulus.
Force (lb) | Deflection (in.) |
14.5 | 0.0025 |
28.9 | 0.0050 |
43.4 | 0.0075 |
57.9 | 0.0100 |
86.0 | 0.0149 (fracture) |
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