FINITEELEMENTMODELING OFWAVEPROPAGATION DURINGIN-LINEULTRASONICMONITORING OFSPOTWELDS
Bibliographic record
Abstract
This paper presents the problem of ultrasonic wave's propagation in multilayered media. Using the Finite Element Method (FEM) a simulation of wave propagation was developed for real time quality control of spot welds. The simulation allows study change in wave propagation patterns through the media at different moments of welding. In particular, the arriving time of the wave passing through different temperature fields is investigated. FEM analysis is a very good way to understand the influence of temperature distribution and indentation on the time of flight (TOF) through the weld. The article presents a comparison between FEM simulations and experimental results. The analysis indicates a correlation with experimental data, which confirms that the models were prepared correctly and that certain simplifications had no significant influence on the results. FEM modeling is a suitable technique to optimize the welding system geometry (for example, shape of the electrode) and to visualize the behavior of ultrasonic wave propagation inside chosen elements of the welding set‐up.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| 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".