Laser excited super resolution thermal imaging for nondestructive inspection of internal defects

Abstract A photothermal super resolution technique is proposed for an improved inspection of internal defects. To evaluate the potential of the laser-based thermographic technique, an additively manufactured stainless steel specimen with closely spaced internal cavities is used. Four different exper...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Samim Ahmadi, Julien Lecompagnon, Philipp Daniel Hirsch, Peter Burgholzer, Peter Jung, Giuseppe Caire, Mathias Ziegler
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f0c1fe87229b4ec3b3f4ef67624f1f82
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f0c1fe87229b4ec3b3f4ef67624f1f82
record_format	dspace
spelling	oai:doaj.org-article:f0c1fe87229b4ec3b3f4ef67624f1f822021-12-02T12:53:17ZLaser excited super resolution thermal imaging for nondestructive inspection of internal defects10.1038/s41598-020-77979-y2045-2322https://doaj.org/article/f0c1fe87229b4ec3b3f4ef67624f1f822020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77979-yhttps://doaj.org/toc/2045-2322Abstract A photothermal super resolution technique is proposed for an improved inspection of internal defects. To evaluate the potential of the laser-based thermographic technique, an additively manufactured stainless steel specimen with closely spaced internal cavities is used. Four different experimental configurations in transmission, reflection, stepwise and continuous scanning are investigated. The applied image post-processing method is based on compressed sensing and makes use of the block sparsity from multiple measurement events. This concerted approach of experimental measurement strategy and numerical optimization enables the resolution of internal defects and outperforms conventional thermographic inspection techniques.Samim AhmadiJulien LecompagnonPhilipp Daniel HirschPeter BurgholzerPeter JungGiuseppe CaireMathias ZieglerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Samim Ahmadi Julien Lecompagnon Philipp Daniel Hirsch Peter Burgholzer Peter Jung Giuseppe Caire Mathias Ziegler Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
description	Abstract A photothermal super resolution technique is proposed for an improved inspection of internal defects. To evaluate the potential of the laser-based thermographic technique, an additively manufactured stainless steel specimen with closely spaced internal cavities is used. Four different experimental configurations in transmission, reflection, stepwise and continuous scanning are investigated. The applied image post-processing method is based on compressed sensing and makes use of the block sparsity from multiple measurement events. This concerted approach of experimental measurement strategy and numerical optimization enables the resolution of internal defects and outperforms conventional thermographic inspection techniques.
format	article
author	Samim Ahmadi Julien Lecompagnon Philipp Daniel Hirsch Peter Burgholzer Peter Jung Giuseppe Caire Mathias Ziegler
author_facet	Samim Ahmadi Julien Lecompagnon Philipp Daniel Hirsch Peter Burgholzer Peter Jung Giuseppe Caire Mathias Ziegler
author_sort	Samim Ahmadi
title	Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
title_short	Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
title_full	Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
title_fullStr	Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
title_full_unstemmed	Laser excited super resolution thermal imaging for nondestructive inspection of internal defects
title_sort	laser excited super resolution thermal imaging for nondestructive inspection of internal defects
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/f0c1fe87229b4ec3b3f4ef67624f1f82
work_keys_str_mv	AT samimahmadi laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT julienlecompagnon laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT philippdanielhirsch laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT peterburgholzer laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT peterjung laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT giuseppecaire laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects AT mathiasziegler laserexcitedsuperresolutionthermalimagingfornondestructiveinspectionofinternaldefects
_version_	1718393600640811008

Laser excited super resolution thermal imaging for nondestructive inspection of internal defects

Ejemplares similares