Terahertz paintmeter for noncontact monitoring of thickness and drying progress in paint film
Abstract
We propose a paintmeter for noncontact and remote monitoring of the thickness and drying progress of a paint film based on the time-of-flight measurement of the echo signal of a terahertz (THz) electromagnetic pulse. The proposed method is effectively applied to two-dimensional mapping of the painting thickness distribution for single-layer and multilayer paint films. Furthermore, adequate parameters for the drying progress are extracted from the THz pulse-echo signal and effectively applied to monitor the wet-to-dry transformation. The THz paintmeter can be a powerful tool for quality control of the paint film on the in-process monitoring of car body painting.
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Terahertz nondestructive testing can measure the thickness of common plastics and paint layers.
“Thus, THz nondestructive testing can be used to determine the thickness of common plastics 1 and paint layers. 2”
From Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor (2010) · cites this paper as [2]
Terahertz radiation passes efficiently through most dielectric materials.
“The terahertz ͑THz͒ frequency band ͑located between 100 GHz and 10 THz, corresponding to wavelengths between 3000 and 30 m in free-space͒ efficiently penetrates most dielectrics.”
From Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor (2010) · cites this paper as [2]
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References 9 · Cited by 273
- Authors
- Yasui, T., Yasuda, T., Sawanaka, K.-I., & Araki, T.
- Affiliations
- The University of Osaka (JP)
- Venue
- Applied Optics
- Publisher
- Optica Publishing Group
- Published
- 2005-11-10
- Volume
- 44
- Issue
- 32
- Pages
- 6849
- ISSN
- 0003-6935 (ISSN-L)
- 1539-4522
- OpenAlex
- W2096230140
- Cited by
- 273
- References
- 9
- Citations by year
- 2026: 3 · 2025: 10 · 2024: 12 · 2023: 14 · 2022: 5 · 2021: 17 · 2020: 17 · 2019: 20 · 2018: 19 · 2017: 11 · 2016: 12 · 2015: 19 · 2014: 28 · 2013: 18 · 2012: 12
- FWCI
- 6.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Applied Optics (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Microwave and Dielectric Measurement Techniques
- Keywords
- non-contact monitoring
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