Table II.
Summary of the Ultrasonic and Physical Properties of Tablets and Roller-Compacted Ribbons
| Case no. | Section | Tablet (n = 30) | Ribbon (n = 50) | ||||
|---|---|---|---|---|---|---|---|
| Mass density, ρ (g/cm3) | Thickness, h (mm) | Δt p (μs) | c p (m/s) | Δt p (μs) | c p (m/s) | ||
| Case 1 | Left | 1.32 (0.005) | 4.05 (0.008) | 2.85 (0.08) | 1,422.13 (16.11) | 2.59 (0.03) | 769.26 (18.14) |
| Middle | 1.31 (0.008) | 4.06 (0.014) | 4.16 (0.09) | 976.74 (17.76) | 1.79 (0.08) | 1,111.53 (17.73) | |
| Right | 1.33 (0.002) | 4.05 (0.009) | 3.05 (0.07) | 1,328.21 (21.33) | 2.40 (0.07) | 833.31 (12.21) | |
| Case 2 | Left | 1.31 (0.006) | 4.06 (0.014) | 5.12 (0.14) | 793.71 (18.62) | 4.40 (0.06) | 454.16 (11.52) |
| Middle | 1.32 (0.009) | 4.06 (0.017) | 5.12 (0.23) | 794.42 (12.37) | 4.22 (0.05) | 473.41 (14.35) | |
| Right | 1.31 (0.011) | 4.06 (0.016) | 5.20 (0.22) | 782.04 (20.01) | 4.27 (0.08) | 467.81 (4.54) | |
| Case 3 | Left | 1.31 (0.005) | 4.05 (0.016) | 3.56 (0.09) | 1,138.25 (14.28) | 3.74 (0.09) | 533.76 (18.27) |
| Middle | 1.31 (0.003) | 4.06 (0.008) | 3.57 (0.08) | 1,137.77 (13.26) | 3.32 (0.10) | 601.23 (41.89) | |
| Right | 1.31 (0.007) | 4.06 (0.011) | 3.58 (0.11) | 1,135.05 (11.81) | 3.65 (0.04) | 547.46 (10.11) | |
| Unlubricated | 1.31 (0.012) | 4.06 (0.009) | 2.48 (0.04) | 1,637.46 (12.78) | n/a | n/a | |
| Virgin MCC powder | |||||||
| Lubricated | 1.32 (0.009) | 4.05 (0.007) | 2.66 (0.05) | 1,523.05 (15.99) | n/a | n/a | |
| Virgin MCC powder | |||||||
| Virgin MCC powder (lubricated tooling) | 1.31 (0.006) | 4.06 (0.011) | 2.53 (0.06) | 1,605.54 (13.72) | n/a | n/a | |
| Case 1 (blend) | 1.32 (0.010) | 4.06 (0.012) | 3.97 (0.10) | 1,021.14 (13.31) | n/a | n/a | |
| Case-2 (blend) | 1.31 (0.012) | 4.06 (0.008) | 5.17 (0.07) | 785.43 (14.78) | n/a | n/a | |
| Case 3 (blend) | 1.32 (0.007) | 4.05 (0.005) | 3.55 (0.08) | 1,139.67 (12.25) | n/a | n/a | |
Standard deviations in estimate of grams per cubic centimeter (for ρ), millimeters (for h), microseconds (for Δt p), and meters per second (for c p) are included in parenthesis. Tablet solid fraction of 0.85