A new non-linear impedance model for liners
Bibliographic record
Abstract
A non-linear impedance model for linear part, the proposed non-linear resistance, and frequency shift effects is presented that allows simulations of various perforated plate configurations. The model considers only the effects of resonator geometry and incident sound pressure amplitude according to frequency. The perforated plate used in the experiment has a perforation diameter of 1mm, porosity of 4.5%, a thickness of 2mm, and a cavity depth of 25mm. It was seen that the absorption's maxima increases with SPL and shifts towards high frequency. The radius and thickness of the perforations are modified as a function of the acoustical Mach number. The results show that the effective radius and thickness if the perforations decrease at high SPL and the corrections are added to the Ma's model for the linear component of the impedance and Melling's model for the nonlinear effects on the resistance.
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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) | 0.000 | 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 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".