Findings from a Three-year AC Corrosion Field Study
Bibliographic record
Abstract
Abstract A field study was conducted to determine the influence of the AC current density and of the coating holiday size on the rate of AC corrosion. This field study involved burying steel coupons of three different sizes (i.e., 1 cm2, 6 cm2, and 10 cm2), applying cathodic protection to an industry standard, and varying 60 Hz AC current densities (i.e., 20 A/m2, 50 A/m2, and 100 A/m2) for a three-year period. Four sets of 12 coupons each were installed for statistical relevance. Each set contained three coupons with no AC current applied (i.e., controls); one for each size. A special power supply cabinet was designed to provide uninterrupted DC and AC current, with each coupon being energized by a separate module. At the end of the test, the coupons were retrieved, cleaned, photographed, and the corrosion rate measured. This paper covers the results of the study, as well as the various findings from three years of data collection, including the effect of AC currents on the protection level of the coupons in clayish soils and changes in the spread impedance due to calcareous deposits.
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.
How this classification was reachedexpand
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 | 0.000 | 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 teacher head, 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".