Highly accurate thickness measurement of multi-layered automotive paints using terahertz technology
In this contribution, we present a highly accurate approach for thickness measurements of multi-layered automotive paints using terahertz time domain spectroscopy in reflection geometry. The proposed method combines the benefits of a model-based material parameters extraction method to calibrate the...
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| Veröffentlicht in: | Applied physics letters 2016-07, Vol.109 (2) |
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| container_title | Applied physics letters |
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| creator | Krimi, Soufiene Klier, Jens Jonuscheit, Joachim von Freymann, Georg Urbansky, Ralph Beigang, René |
| description | In this contribution, we present a highly accurate approach for thickness measurements of multi-layered automotive paints using terahertz time domain spectroscopy in reflection geometry. The proposed method combines the benefits of a model-based material parameters extraction method to calibrate the paint coatings, a generalized Rouard's method to simulate the terahertz radiation behavior within arbitrary thin films, and the robustness of a powerful evolutionary optimization algorithm to increase the sensitivity of the minimum thickness measurement limit. Within the framework of this work, a self-calibration model is introduced, which takes into consideration the real industrial challenges such as the effect of wet-on-wet spray in the painting process. |
| doi_str_mv | 10.1063/1.4955407 |
| format | Article |
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| ispartof | Applied physics letters, 2016-07, Vol.109 (2) |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | ALGORITHMS Applied physics Automobile industry Automotive engineering CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Computer simulation Evolutionary algorithms GEOMETRY Multilayers PAINTS Protective coatings Self calibration SPECTROSCOPY SPRAYS THICKNESS Thickness measurement THIN FILMS |
| title | Highly accurate thickness measurement of multi-layered automotive paints using terahertz technology |
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