Finite element determination of the absolute magnitude of an ultrasonic pulse produced by an EMAT
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Bibliographic record
Abstract
Electromagnetic acoustic transducers or EMATs for short, are investigated in transmitting mode for nonferromagnetic conducting materials. Two different finite element (FE) formulations, derived from different definitions of source current density, are compared. A differential equation based on an incomplete equation for the source current density is solved analytically for the magnetic vector potential (MVP). To validate the FE results, one-dimensional (1D) analytical solutions are used. An EMAT example containing six source conductors is also modeled. The FE results are compared with results obtained from existing methods for two EMAT meander coil conductor sizes. The results show the importance of using the complete equation for the source current density in the modeling of EMATs, in order to properly account for skin and proximity effects.
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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) | 0.000 | 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 it