International Journal of Automotive Technology

, Volume 20, Issue 4, pp 755–762 | Cite as

Cumulative Light Intensity of Automotive Glass: A Comparative Study on Combination of Optical Filter for Accelerated Weathering Test

  • Eun Hee Jo
  • Il Han Kim
  • In-Soo Han
  • Chang Hwan KimEmail author


The aim of this study was to establish a test method with improved reliability and reproducibility for the accelerated weathering test of automotive interior materials. For this purpose, this study measured the spectral power distribution (SPD) of the glass used in actual vehicles in the oceanic climate region of South Korea (Seosan) and in the desert climate region of North America (California Proving Ground). In addition, the SPD was measured according to the position of automotive interior parts, and cumulative light intensity was calculated using the curve fitting method. Results showed that the measured light intensity varied according to the position of interior parts because of numerous variables such as the type of glass, angle of sunlight, and frames of vehicles. We investigated the cumulative light intensity of the solar glass used in this study and the glass of other manufacturers, and the obtained data were incorporated into a data base (DB). Understanding the optical characteristics of filters is important accelerated weathering tests (Xenon). Therefore, we compared the SPD and cumulative light intensity of each filter combination and actual automotive glass to confirm the suitability of the filters for weathering tests.

Key words

Automotive interior parts Spectral power distribution Cumulative light intensity Automotive glass Optical filter 


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This study was funded by the private research service project (Project name: strengthening the light resistance characteristics and evaluation method of interior parts) initiated by Hyundai-Kia-Namyang R&D Center in 2018. We appreciate the valuable support.


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Copyright information

© KSAE 2019

Authors and Affiliations

  • Eun Hee Jo
    • 1
  • Il Han Kim
    • 1
  • In-Soo Han
    • 2
  • Chang Hwan Kim
    • 1
    Email author
  1. 1.Outdoor Demonstration Test CenterKorea Conformity LaboratoriesChungnamKorea
  2. 2.Automotive Research & Development DivisionHyundai Motor GroupGyeonggiKorea

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