Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy

In this study, we developed a rapid nondestructive tool for testing rust spread in a metal covered by a paint layer by using a THz time-domain spectroscopy system at a speed of 100 Hz/pixel. Time-of-flight imaging helps identify rust formation by exclusively obtaining the reflection from the steel b...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hwan Sik Kim, Seung Yeob Baik, Joong Wook Lee, Jangsun Kim, Yeong Hwan Ahn
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	terahertz imaging nondestructive testing rust Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/7025ebb8888c4918b5df770da7d05765
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7025ebb8888c4918b5df770da7d05765
record_format	dspace
spelling	oai:doaj.org-article:7025ebb8888c4918b5df770da7d057652021-11-25T16:32:45ZNondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy10.3390/app1122105942076-3417https://doaj.org/article/7025ebb8888c4918b5df770da7d057652021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10594https://doaj.org/toc/2076-3417In this study, we developed a rapid nondestructive tool for testing rust spread in a metal covered by a paint layer by using a THz time-domain spectroscopy system at a speed of 100 Hz/pixel. Time-of-flight imaging helps identify rust formation by exclusively obtaining the reflection from the steel below the paint surface. The use of frequency-selective imaging allows us to manipulate the contrast in rust imaging. Higher contrast is generally obtained when monitoring using the higher frequency component. In addition, we monitored the spread of rust in a steel plate under the influence of two different chemical solutions: NaCl and acid. We found that in the early stages, the decrease in THz reflection was governed by the high-frequency components due to the formation of lepidocrocite, whereas the low-frequency component develops as the proportion of hematite increases with time.Hwan Sik KimSeung Yeob BaikJoong Wook LeeJangsun KimYeong Hwan AhnMDPI AGarticleterahertz imagingnondestructive testingrustTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10594, p 10594 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	terahertz imaging nondestructive testing rust Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	terahertz imaging nondestructive testing rust Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Hwan Sik Kim Seung Yeob Baik Joong Wook Lee Jangsun Kim Yeong Hwan Ahn Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
description	In this study, we developed a rapid nondestructive tool for testing rust spread in a metal covered by a paint layer by using a THz time-domain spectroscopy system at a speed of 100 Hz/pixel. Time-of-flight imaging helps identify rust formation by exclusively obtaining the reflection from the steel below the paint surface. The use of frequency-selective imaging allows us to manipulate the contrast in rust imaging. Higher contrast is generally obtained when monitoring using the higher frequency component. In addition, we monitored the spread of rust in a steel plate under the influence of two different chemical solutions: NaCl and acid. We found that in the early stages, the decrease in THz reflection was governed by the high-frequency components due to the formation of lepidocrocite, whereas the low-frequency component develops as the proportion of hematite increases with time.
format	article
author	Hwan Sik Kim Seung Yeob Baik Joong Wook Lee Jangsun Kim Yeong Hwan Ahn
author_facet	Hwan Sik Kim Seung Yeob Baik Joong Wook Lee Jangsun Kim Yeong Hwan Ahn
author_sort	Hwan Sik Kim
title	Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
title_short	Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
title_full	Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
title_fullStr	Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
title_full_unstemmed	Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy
title_sort	nondestructive tomographic imaging of rust with rapid thz time-domain spectroscopy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7025ebb8888c4918b5df770da7d05765
work_keys_str_mv	AT hwansikkim nondestructivetomographicimagingofrustwithrapidthztimedomainspectroscopy AT seungyeobbaik nondestructivetomographicimagingofrustwithrapidthztimedomainspectroscopy AT joongwooklee nondestructivetomographicimagingofrustwithrapidthztimedomainspectroscopy AT jangsunkim nondestructivetomographicimagingofrustwithrapidthztimedomainspectroscopy AT yeonghwanahn nondestructivetomographicimagingofrustwithrapidthztimedomainspectroscopy
_version_	1718413143229595648

Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy

Ejemplares similares