Modeling Pipeline Corrosion within a Disc-Shaped Crevice for Various Cathodic Protection Levels at the Holiday and the Effect of Crevice Geometry
Bibliographic record
Abstract
Abstract A deterministic model was developed to predict the pipeline corrosion rate within a disc-shaped crevice in the presence of oxygen (O2) and cathodic protection (CP). The model results from modification of a previous model that we developed to describe pipeline corrosion in a rectangle crevice. Using this disc crevice corrosion model (DCCM), the effect of the geometrical parameters of the crevice (crevice gap, the holiday size and the thickness of the coating) on the corrosion rate, the effect of various levels of CP and the effect of temperature on the crevice corrosion rate and potential were investigated. O2 transport through both the holiday and the disbonded coating was included. This work provided insight into the mechanisms of CP in protection of pipelines and the significance of crevice geometry and temperature to the DCC rate.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 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".