Sound transmission loss of orthotropic sandwich panels with soft core and noise control treatment
Why this work is in the frame
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Bibliographic record
Abstract
A new improved model of diffuse field acoustic transmission in symmetrical sandwich panels with thin skins and a soft core is presented in this paper. Generally, asymmetric motion is the only dynamic behaviour which is considered in the modeling of sandwich panels. Bending and membrane behaviour are considered in the skins while the core is assumed to be incompressible over the thickness and experiences only shearing deformations. This set of assumptions is suitable for structures with relatively stiff and thin cores. However, the symmetric mode of motion becomes important for panels with thick and soft cores which exhibit significant compression deformations over the thickness. In this paper, both symmetric and asymmetric modes of motion are considered numerically. Their impact on the transmission loss is addressed in the configuration of a sandwich panel with attached multilayer Noise Control Treatment (NCT). Experimental and literature results are compared with the numerical simulations using the present theoretical approach in order to prove the validity and effectiveness of this approach. Copyright © (2012) by the Institute of Noise Control Engineering (INCE).
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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