Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors

The use of infrared thermography, a non-destructive technique for detecting structural failures or hidden defects, has become ever more common in the last 10 years. The combination of its growing popularity, the relatively small price tag on low-resolution devices and the lack of operator experience...

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Autores principales:	I. Martínez, E. Martínez
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Infrared thermography Timber structure Pathology assessment Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/12848be1a4dc4300b4ed186658e82b09
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spelling	oai:doaj.org-article:12848be1a4dc4300b4ed186658e82b092021-11-26T04:29:36ZQualitative timber structure assessment with passive IR thermography. Case study of sources of common errors2214-509510.1016/j.cscm.2021.e00789https://doaj.org/article/12848be1a4dc4300b4ed186658e82b092022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003041https://doaj.org/toc/2214-5095The use of infrared thermography, a non-destructive technique for detecting structural failures or hidden defects, has become ever more common in the last 10 years. The combination of its growing popularity, the relatively small price tag on low-resolution devices and the lack of operator experience has fostered significant errors in the interpretation of the resulting images. This paper describes the use of infrared thermography and imaging to assess the condition of a historic timber-roofed building in Madrid, Spain. It aimed primarily to determine the utility of thermographic techniques in the detection of flaws such as cracks, moisture content and detachment. On the other hand, the limitations of IR techniques and the errors most commonly committed in interpreting the results must be identified to determine how to avoid misleading interpretations. The survey methodology deployed here followed a procedure established for earlier studies of historic buildings in which preliminary fact sheets were drawn up to determine the areas of the building’s structural members most in need of assessment. Changes in timber properties and weather-mediated moisture content were identified on the grounds of material emissivity using passive thermography. Active thermography is recommended to detect internal flaws.I. MartínezE. MartínezElsevierarticleInfrared thermographyTimber structurePathology assessmentMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00789- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Infrared thermography Timber structure Pathology assessment Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Infrared thermography Timber structure Pathology assessment Materials of engineering and construction. Mechanics of materials TA401-492 I. Martínez E. Martínez Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
description	The use of infrared thermography, a non-destructive technique for detecting structural failures or hidden defects, has become ever more common in the last 10 years. The combination of its growing popularity, the relatively small price tag on low-resolution devices and the lack of operator experience has fostered significant errors in the interpretation of the resulting images. This paper describes the use of infrared thermography and imaging to assess the condition of a historic timber-roofed building in Madrid, Spain. It aimed primarily to determine the utility of thermographic techniques in the detection of flaws such as cracks, moisture content and detachment. On the other hand, the limitations of IR techniques and the errors most commonly committed in interpreting the results must be identified to determine how to avoid misleading interpretations. The survey methodology deployed here followed a procedure established for earlier studies of historic buildings in which preliminary fact sheets were drawn up to determine the areas of the building’s structural members most in need of assessment. Changes in timber properties and weather-mediated moisture content were identified on the grounds of material emissivity using passive thermography. Active thermography is recommended to detect internal flaws.
format	article
author	I. Martínez E. Martínez
author_facet	I. Martínez E. Martínez
author_sort	I. Martínez
title	Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
title_short	Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
title_full	Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
title_fullStr	Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
title_full_unstemmed	Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors
title_sort	qualitative timber structure assessment with passive ir thermography. case study of sources of common errors
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/12848be1a4dc4300b4ed186658e82b09
work_keys_str_mv	AT imartinez qualitativetimberstructureassessmentwithpassiveirthermographycasestudyofsourcesofcommonerrors AT emartinez qualitativetimberstructureassessmentwithpassiveirthermographycasestudyofsourcesofcommonerrors
_version_	1718409824460341248

Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors

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