Terahertz Quality Inspection for Automotive and Aviation Industries
Terahertz Quality Inspection for Automotive and Aviation Industries
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DOI：
10.1007/s10762-019-00639-4
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发表时间：
2019-11-26
影响因子：
2.9
通讯作者：
Molter, D.
中科院分区：
文献类型：
--
作者：
Ellrich, F.;Bauer, M.;Molter, D.
利用太赫兹波进行无损质量检测已成为一项新兴技术，特别是在汽车和航空行业。根据具体应用，不同的太赫兹系统（全电子或基于光学激光脉冲）覆盖从0.1 THz到近10 THz的太赫兹频率范围，一方面提供高速体积检测，另一方面提供高分辨率厚度测定。在本文中，我们提出了不同的工业应用，我们已经解决了我们的太赫兹系统在过去几年。首先，我们展示了玻璃纤维增强复合材料和泡沫结构的三维成像，并演示了多层塑料管壁的厚度确定。然后，我们提出了已知和未知的多层系统的表征下降到几微米和测量湿漆的厚度的可能性。工业环境中系统可靠性的挑战，例如，在振动的影响下，有效的解决方案进行了讨论。综述了近年来太赫兹技术在工业质量检测中的应用。所提出的原理不仅限于汽车和航空工业，而且还可以适用于许多其他工业领域。
Nondestructive quality inspection with terahertz waves has become an emerging technology, especially in the automotive and aviation industries. Depending on the specific application, different terahertz systems-either fully electronic or based on optical laser pulses-cover the terahertz frequency region from 0.1 THz up to nearly 10 THz and provide high-speed volume inspections on the one hand and high-resolution thickness determination on the other hand. In this paper, we present different industrial applications, which we have addressed with our terahertz systems within the last couple of years. First, we show three-dimensional imaging of glass fiber-reinforced composites and foam structures, and demonstrate thickness determination of multilayer plastic tube walls. Then, we present the characterization of known and unknown multilayer systems down to some microns and the possibility of measuring the thickness of wet paints. The challenges of system reliability in industrial environments, e.g., under the impact of vibrations, and effective solutions are discussed. This paper gives an overview of state-of-the-art terahertz technology for industrial quality inspection. The presented principles are not limited to the automotive and aviation industries but can also be adapted to many other industrial fields.