Thermophysical Properties Measurement of Interior Car Materials vs. Temperature and Mechanical Compression
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Résumé
<div class="section abstract"><div class="htmlview paragraph">Thermophysical properties of materials used in the design of automotive interiors are needed for computer simulation of climate conditions inside the vehicle. These properties are required for assessment of the vehicle occupants' thermal sensation as they come in contact with the vehicle interior components, such as steering wheels, arm rests, instruments panel and seats.</div><div class="htmlview paragraph">This paper presents the results of an investigation into the thermophysical properties of materials which are required for solving the non-linear Fourier equations with any boundary conditions and taking into account materials' specific heat, volume density, thermal conductivity, and thermal optical properties (spectral and total emissivity and absorptivity). The model and results of the computer simulation will be published in a separate paper.</div><div class="htmlview paragraph">The tested materials included foam, leather/foam laminated materials, and a few plastic laminated materials, which were used in the construction of various automotive interior parts. One original aspect of this work was the testing of plastic foam samples both at a wide temperature range from −20°C to +60°C and at varying compression levels up to 60%. Such data is needed for calculation of heat conduction within occupied automotive seats which are undergoing different static and dynamic loads.</div><div class="htmlview paragraph">Thermal conductivity was determined as the product of thermal diffusivity and volume specific heat. The thermal diffusivity was measured in accordance to ASTM STP 1320, and the specific heat was measured according to ASTM E1269, both in the temperature range from −20°C to +60°C. The emissivity and absorptivity were measured according to ASTM E408 and ASTM E903, respectively at room temperature.</div><div class="htmlview paragraph">The new experimental data obtained has scientific and practical interests for thermal science and engineering applications. The thermal conductivity results of the foam materials in the wide range of temperatures and compression/deformation are of interest for the development of heat transfer mechanisms in porous media, for materials science and technology. All data together enable the development of advanced mathematical models for the design, assessment and optimization of climate conditions inside cars and other vehicles.</div></div>
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle