| Ice633 (standard ice) |
| Back to Ice626 | Forward to Ice635 |
| P = 30 MPa, T = 215 K, s = 5 - 9 MPa | steps (1a), (1b), (1c) |
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Legend: Upper graph of each pair is motor speed V (proportional to edot); lower graph is load (in volts). Translate motor V to edot thus: for 100:1 gearing, V0.05 ≈ 3e-8/s; for 10:1 gearing, V0.05≈3e-7/s. Load to stress translation for ice633 is 1.2 MPa/mV, with a few mV zero offset. Horizontal scale is time. 5000≈14 hrs. |
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e=0.2596 | 1515 hrs 11/17. End step (1c). Discover that true force gage zero is ~0.00002 V. |
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e=0.2275 | 0818 hrs 11/17. Start step (1c) |
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e=0.1741 | 11/16/10 1949hrs. End step (1b). |
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e=0.1383 | 11/16/10 0910hrs |
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e=0.0829 | 11/15/10 1948hrs. Change in motor control parameters takes wiggle out of motor speed (upper chart), but internal force gage (lower chart) continues to ~±5% cyclic. Suspect something like slow stick slip of piston or maybe some resonant T cycling. However, tracing internal force gage vs T and vs external force gage reveals no compelling correlations. It's just one of those things. |
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e=0.0457 | 11/15/10 0557hrs. Start step (1b) |
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e=0.0316 | 11/14/10 1726hrs. End step (1a) |
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e=0.0286 | 1530 hrs 11/14. Step (1) continues. |
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detail of previous | |
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e=0.0190 | 0140 hrs 11/14/10. Start of step (1) |