IRT techniques for the detection of timber moisture

Rosina, Elisabetta; Ludwig, Nicola; Redaelli, Veronica; Robison, Elwin C.

doi:10.1117/12.486890

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2004

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Cited by 2 publications

(2 citation statements)

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“…In fact, by calculating the amount of energy it is possible to optimize the procedure and increase the sensitivity of the method [8].…”

Section: Resultsmentioning

confidence: 99%

Moisture detection in wood and plaster by IR thermography

Ludwig

Redaelli

Rosina

et al. 2004

Infrared Physics & Technology

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“…In fact, by calculating the amount of energy it is possible to optimize the procedure and increase the sensitivity of the method [8].…”

Section: Resultsmentioning

confidence: 99%

Moisture detection in wood and plaster by IR thermography

Ludwig

Redaelli

Rosina

et al. 2004

Infrared Physics & Technology

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“…It is more convenient, however, to resort to the same thermocamera for measuring the atmosphere temperature (T a ) based on the surface temperature of an ideally dry sample in equilibrium in the same environmental conditions so that the same correcting factor applies to both temperatures in the equation (7).…”

Section: Numerical Evaluationsmentioning

confidence: 99%

Evaluation of evaporation flux in building materials by infrared thermography

Milazzo¹,

Ludwig

Redaelli³

2002

Proceedings of the 2002 International Conference on Quantitative InfraRed Thermography

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The presence of water inside the walls can be considered one of the most important causes of degradation in historical buildings. In particular, evaporation can give rise to salt deposits inside the superficial pores. Evaporation flux from wall surfaces can quantitatively be estimated by measuring the surface temperature since it depends in a sensitive way on the evaporation rate. The value of the surface temperature, in equilibrium conditions for all the different heat exchange contributions to the wall, depends on the evaporation rate, material's thermal conductivity as well as temperature and ventilation experimental conditions.Several experiments have been performed on brick, plaster and stone specimens with different porosity values in the laboratory of the "Istituto di Fisica Generale Applicata" to empirically obtain correlations of temperature with evaporation rate. A climatic room with controlled environmental parameters (temperature, relative humidity, ventilation, thermal irradiation) was employed and cooling effects due to evaporation were investigated in steady conditions by a SW IR thermographic camera.Tables for evaporation rate, water content and surface temperature values (Φ, Wc, Ts) were obtained for several materials. Applicability limits of the thermographic technique for moisture detection are discussed.

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IRT techniques for the detection of timber moisture

Cited by 2 publications

References 1 publication

Moisture detection in wood and plaster by IR thermography

Moisture detection in wood and plaster by IR thermography

Evaluation of evaporation flux in building materials by infrared thermography

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