Non-Destructive Assessment of Timber Elements With an Emphasis on Radiometry

Pošta, Jan; Dolejš, Jakub

doi:10.1080/15583058.2015.1041192

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Other applications of the thermography methodology are, for example, image processing by statistical analysis (Madruga, 2010), old buildings monitoring (Grinzato, 2002), active thermography on façades (Ibarra-Castanedo, 2010), thermo-physical aspects of materials (Cañas, 2005), moisture detection in building facades (Lerma, 2011;Binda, 2010), study of masonry structures (Meola, 2007) or the specific study of timber (Posta, 2015).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis Procedure for Building Materials in Historic Buildings by Applying Infrared Thermography

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Gil

et al. 2018

Russ J Nondestruct Test

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Historic buildings have a great cultural and architectural value. It is necessary to analyze their state of conservation, but sometimes it is difficult to perform laboratory tests without damaging this heritage. In the field of architecture, infrared thermography is usually used to provide descriptive information about the surface temperature of building materials. This current research presents a methodology widely applicable to historic buildings. As an example of application, the study is focused in the Seminary-School of Corpus Christi of Valencia (Spain), a very outstanding building from the 16 th Century. This research presents an analytical study to be able to differentiate the temperature distribution of all pixels of a thermographic image. Thermal images are a matrix of data and their study helps us in decision-making based on objective data. KEYWORDSInfrared thermography, historic building, heritage, building material, nondestructive test, rammed earth wall, stone, brick.

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Section: Introductionmentioning

confidence: 99%

Quantitative Analysis Procedure for Building Materials in Historic Buildings by Applying Infrared Thermography

Lerma

Más

Gil

et al. 2018

Russ J Nondestruct Test

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“…The lack of maintenance and high moisture content often lead to material degradation. The level and extent of degradation can be assessed by various diagnostic methods, both non-destructive [1] and semi-destructive [2]. The ends of timber beams from roof trusses lying on the wet masonry are the typical example.…”

Section: Introductionmentioning

confidence: 99%

New Design Method for Lap Scarf Joint Used for Reconstruction of Timber Structures

Hasníková¹,

Tippner²,

Kunecký³

et al. 2015

Third International Conference on Advances in Civil, Structural and Mechanical Engineering - ACSM 2015

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The article describes a development of a new carpentry join suitable for reconstructions of timber structures; it is possible to replace only damaged parts of wooden beam with help of the joint. The mechanical behavior of the joint was analyzed in details. The inclined faces transfer the direction of loading and use of less stiff wooden dowels allows better distribution of stresses. The design methodic has been created so that the maximum of joint potential is used safely.

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Correlation between thermal and density properties of chestnuts: preliminary results of experimental non-destructive testing

Borghese,

Santoro,

Santini

et al. 2024

Arch. Civ. Mech. Eng.

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This study presents the preliminary outcomes of a methodology for the physical and mechanical characterization of various chestnut elements in different states of preservation. Strategizing conservation and retrofit interventions for timber is necessary, and to do this, it is necessary to establish an estimation of physical (transmissivity, thermal conductivity, humidity level, etc.) and mechanical properties (density, compressive or bending strength, etc.). This essential information is typically associated with timber defects, but there are lack of correlations. The primary objective is to establish correlations between thermal and density properties with the aim of preserving original assets. The investigation delves into the relationship between timber density and thermal properties through experimental non-destructive testing (NDT). Two NDTs were employed with the aim of correlating: penetrometric testing and active thermography investigations. The parametric study on the excitation period yielded valuable insights into the temporal dynamics of heat transfer within the timber, underscoring the significance of selecting appropriate excitation periods to capture precise thermal properties. Tabular data on relative humidity for salified, dried, and new samples provided a quantitative backdrop to these observations, unveiling the nuanced effects of humidity on the timber’s thermal response. The results of this study are positioned to inform future conservation efforts by laying the groundwork for a comprehensive understanding of timber’s mechanical properties. Particularly, the challenge lies in accurately estimating density, where surface tests are often less reliable than in-depth ones. Therefore, it is crucial to seek validation through other NDT tests, such as thermographic analysis and visual inspection, and hygrometric tests recognizing their importance in enhancing the reliability of density assessments. This approach will contribute to the development of more discerning preservation strategies.

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Non-Destructive Assessment of Timber Elements With an Emphasis on Radiometry

Cited by 4 publications

References 3 publications

Quantitative Analysis Procedure for Building Materials in Historic Buildings by Applying Infrared Thermography

Quantitative Analysis Procedure for Building Materials in Historic Buildings by Applying Infrared Thermography

New Design Method for Lap Scarf Joint Used for Reconstruction of Timber Structures

Correlation between thermal and density properties of chestnuts: preliminary results of experimental non-destructive testing

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