T/CSAE 67-2018 in English
VALIDVehicle weathering testing and evaluating terms and definitions
- Issued on:2018-03-01
- Implemented on:2018-03-01
- File Format:PDF
- Delivery:Via email within 5 business days
$388.00
Introduction
Analysis of the core framework of the standard
| Chapter | Number of terms | Core content |
|---|---|---|
| Environmental terms | 27 items | Climate classification, radiation type, temperature and humidity parameters |
| Test terms | 22 items | Exposure method, specimen specification, test control |
| Evaluation terms | 26 items | Appearance changes, mechanical properties, chemical indicators |
| Equipment terms | 15 items | Test chamber type, temperature measurement system |
Detailed explanation of key technical terms
1. Environmental classification system
The standard establishes three levels of environmental classification: natural environment (3.3), induced environment (3.4) and artificial simulated environment (3.5). The concept of microenvironment (3.8) is specifically defined, which refers to the specific environmental conditions that parts are subjected to locally, such as the surface temperature of the instrument panel can reach 80-120℃.
2. Radiation measurement standards
- Total solar radiation (3.17): Contains direct and scattered components, standard unit Langley (ly)
- TNR Langley (4.22): Temperature normalized radiation, used for interior testing
- Ultraviolet radiation subdivided into UVA/UVB/UVC bands (3.18)
Test method comparison
Typical exposure test technology
| Test type | Applicable scenario | Acceleration ratio |
|---|---|---|
| Natural climate exposure (4.3) | Benchmark data acquisition | 1× |
| Black box exposure (4.7) | Exterior trim test | 2-3× |
| Under-glass exposure (4.8) | Interior trim aging | 0.5-1× |
Implementation suggestions
- Equipment selection: Select Xenon arc lamp test chamber (6.5) or Metal halide lamp test chamber (6.6) according to the material usage location
- Evaluation system: It is recommended to combine multiple indicators such as color difference (5.2), chalking (5.4) and brittleness (5.17) for comprehensive evaluation
- Data correlation: Artificial accelerated tests need to establish correlation with natural exposure through TNR Langley (4.22)
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