AC Corrosion at Coating Defect on Pipelines
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In this work, the effect of the size and geometrical shape of coating defects on pipeline corrosion under alternating current (AC) interference in a deoxygenated, near-neutral pH bicarbonate solution was studied by direct current (DC) potential analysis, polarization curve measurements, and surface characterization. The results demonstrate that the size of the defect is critical to AC corrosion of steel occurring at the defect base. When a defect is small, the threshold AC to induce pitting corrosion is low. Moreover, both anodic and cathodic current densities decrease, which is attributed to the blocking effect of corrosion product accumulating at the defect. The shape of the defect affects corrosion only when the defect is small, e.g., 5 mm in diameter. The effect becomes undetectable when the defect is large, e.g., 10 mm in diameter. Generally, circular and triangular defects are associated with the most and least negative DC potentials as well as the largest and smallest anodic current densities, respectively, while square-shaped defects fell somewhere in between in terms of both potential density and current density values.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 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 | 0.001 | 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 | 0.003 |
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 it