Terahertz waves for contactless control and imaging in aeronautics industry

Chopard, Adrien; Cassar, Quentin; Bou-Sleiman, Joyce; Guillet, Jean-Paul; Pan, Mingming; Perraud, Jean-Baptiste; Susset, Arnaud; Mounaix, Patrick

doi:10.1016/j.ndteint.2021.102473

Cited by 14 publications

(9 citation statements)

References 19 publications

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“…There is no doubt that THz technology faces several challenges in order to be fully exploited in biology and medicine were reliability and time to market are relatively high. However, it is important to remind those industrial applications are already in place, such as measuring the thickness of automotive paint during painting, or in aeronautics [47]. Similar approaches could be exploited for bio application as it has been used to see the layered structure of sunflower seeds [48].…”

Section: Discussionmentioning

confidence: 99%

Terahertz technology for biophotonics: a general overview and recent advances in THz spectroscopy toward biology

Peretti

2023

Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI

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In this conference, we will discuss the advancements in Terahertz (THz) spectroscopy and imaging regarding biophotonics applications. In recent years, THz technology helped various fields, from fundamental physics to industrial process control. THz spectrometers offer a wide spectrum range and high dynamic range, enabling the analysis of semi-transparent materials and living tissues. THz imaging has shown potential in applications such as cancer detection, diabetes foot syndrome, burn wound analysis, and plant hydration assessment. Spectroscopy in the THz range is particularly promising for studying biological systems, including proteins and their compounds. However, challenges such as the strong absorption of water, temperature stability, and small sample sizes need to be overcome. Techniques like scanning microscopy, integrated photonics, and metallic broadband approaches have been explored to enhance THz analysis. Despite the challenges, THz technology has found industrial applications and efforts are being made to improve data processing and error evaluation. Additionally, a proposed method aims to enhance the resolution of THz systems, making them suitable for gas spectroscopy and the sensing of volatile organic compounds relevant to biology.

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Section: Discussionmentioning

confidence: 99%

Terahertz technology for biophotonics: a general overview and recent advances in THz spectroscopy toward biology

Peretti

2023

Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI

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“…The resolution limitation of MHz FMCW is widely overcome by shifting to a higher bandwidth of the microwave spectrum, which is called continuous wave terahertz imaging, or popularly categorised as the THz NDE method [156,157]. This method is known to easily provide a resolution of up to the sub-millimetre range, with a proven performance of identifying embedded wire of 35 µm in diameter and water ingress [156].…”

Section: Frequency-modulated Continuous Wave-based Ndementioning

confidence: 99%

A Review of Sensing Technologies for Non-Destructive Evaluation of Structural Composite Materials

et al. 2021

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The growing demand and diversity in the application of industrial composites and the current inability of present non-destructive evaluation (NDE) methods to perform detailed inspection of these composites has motivated this comprehensive review of sensing technologies. NDE has the potential to be a versatile tool for maintaining composite structures deployed in hazardous and inaccessible areas, such as offshore wind farms and nuclear power plants. Therefore, the future composite solutions need to take into consideration the niche requirements of these high-value/critical applications. Composite materials are intrinsically complex due to their anisotropic and non-homogeneous characteristics. This presents a significant challenge for evaluation and the associated data analysis for NDEs. For example, the quality assurance, certification of composite structures, and early detection of the failure is complex due to the variability and tolerances involved in the composite manufacturing. Adapting existing NDE methods to detect and locate the defects at multiple length scales in the complex materials represents a significant challenge, resulting in a delayed and incorrect diagnosis of the structural health. This paper presents a comprehensive review of the NDE techniques, that includes a detailed discussion of their working principles, setup, advantages, limitations, and usage level for the structural composites. A comparison between these techniques is also presented, providing an insight into the future trends for composites’ prognostic and health management (PHM). Current research trends show the emergence of the non-contact-type NDE (including digital image correlation, infrared tomography, as well as disruptive frequency-modulated continuous wave techniques) for structural composites, and the reasons for their choice over the most popular contact-type (ultrasonic, acoustic, and piezoelectric testing) NDE methods is also discussed. The analysis of this new sensing modality for composites’ is presented within the context of the state-of-the-art and projected future requirements.

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“…Non-destructive testing and imaging [1] at terahertz frequencies has demonstrated applications for the inspection of composite materials for aeronautics [2], the diagnosis of art paintings [3], the detection of fractures and lithological changes [4] in rocks or for the analysis of polymers [5]. Most of these systems use THz sources and detectors, associated with a mechanical scanner, which is not practical for making measurements outside the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Blackbody source-based terahertz nondestructive testing with augmented reality

Guillet,

Rioult,

Gaquiere

2023

Terahertz Emitters, Receivers, and Applications XIV

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We present original work on non-destructive testing with an imaging solution combining a sensor that can measure the millimeter-wave radiation of a black body at temperatures between 290-400°K and a portable solution based on augmented reality with a smartphone. This handy portable solution makes it possible to do away with mechanical scanning systems which are heavy and slow, and therefore may be suitable for civil engineering detection or imaging applications, or in the field of aeronautics.

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Terahertz waves for contactless control and imaging in aeronautics industry

Cited by 14 publications

References 19 publications

Terahertz technology for biophotonics: a general overview and recent advances in THz spectroscopy toward biology

Terahertz technology for biophotonics: a general overview and recent advances in THz spectroscopy toward biology

A Review of Sensing Technologies for Non-Destructive Evaluation of Structural Composite Materials

Blackbody source-based terahertz nondestructive testing with augmented reality

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