Differential Distribution Analysis and Region and Grade Regulation on Auto-Parts Weathering External Factors with Non-Uniform Thermal Environment
| Autor: | Fengchong Lan, Zhiyong Deng, Jiqing Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Disequilibrium
Automotive industry non-uniform thermal environment Distribution (economics) Soil science Weathering 02 engineering and technology 010402 general chemistry diurnal heat transfer variation law 01 natural sciences lcsh:Technology lcsh:Chemistry weathering inconsistency Thermal medicine light-dark period General Materials Science Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes business.industry lcsh:T Process Chemistry and Technology General Engineering Differential (mechanical device) differential distribution 021001 nanoscience & nanotechnology lcsh:QC1-999 0104 chemical sciences Computer Science Applications Temperature gradient lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 region and grade regulation Environmental science medicine.symptom 0210 nano-technology business lcsh:Engineering (General). Civil engineering (General) Intensity (heat transfer) lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 15 Applied Sciences, Vol 10, Iss 5116, p 5116 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10155116 |
| Popis: | It is difficult to comprehensively master and precisely regulate the external factors distribution of automobile weathering in non-uniform thermal environment as well as the consequent disequilibrium weathering problem, while exploring weather-resistant materials in uniform thermal environment. Thus, a numerical calculation method for the weathering external factors is proposed, on the basis of annual experimental study on the outdoor weathering inconsistencies of auto-parts. The time&ndash space distribution characteristics and day&ndash night variation rules of the external factors are studied, and the disequilibrium weathering mechanism among parts is revealed from the perspective of non-uniform distribution of external factors. The laws of automotive physical parameters, orientations and locations, as well as their influences on external factors distribution are analyzed in detail, and hereby the targeted schemes to effectively reduce the local external factor intensity and the thermal gradient between parts are investigated. The method can be used to rapidly predict weathering external factors distribution of vehicle exposed to outdoor in any direction during day and night, so as to provide auto-parts with differentiated test schemes in accelerated tests and IP/DP box tests, and it also contributes to present some pertinence guidance for the accurate regulation of automobile disequilibrium weathering on regions at different levels. |
| Databáze: | OpenAIRE |
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