Rotational Rheometry of a Fumed Silica Lubricating Grease
Bibliographic record
Abstract
Abstract The rheological properties of lubricating greases are the governing properties for performance assessment in lubrication applications. These properties can be determined under both controlled stress and strain rheometry. Moreover, studying the effect of temperature on these properties is of great importance. This study investigates the differences between rheological characterizations performed under both controlled stress and strain modes on fumed silica greases. The results of steady-state viscometry under controlled strain mode revealed a non-monotonic temperature-dependent behavior. This non-monotonic behavior, attributed to the shear banding, was also observed in up and down stress ramp data. The results of the controlled stress and controlled strain rheometry modes coincided well at high values of stress and shear rates due to the reduced effect of stick-slip phenomenon and elastic deformation. A two-step yielding flow curve observed in the steady flow curves was justified by bond and cage breakage mechanisms in fumed silica suspensions.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".