Evaluation of fractures in a concrete slab by means of laser-spot thermography

Agnese Scalbi; Roberto Olmi; Gabriele Inglese

doi:10.1016/j.ijheatmasstransfer.2019.06.082

Evaluation of fractures in a concrete slab by means of laser-spot thermography

Agnese Scalbi, Roberto Olmi, Gabriele Inglese

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

12 Citaten (Scopus)

Samenvatting

The presence of cracks is a determining factor for the deterioration of reinforced concrete structures. Laser Spot Thermography (LST) is a fast and contactless technique for cracks identification. A computational procedure to characterize the crack depth by means of LST is presented here. We propose a heuristic form of the temperature at the concrete slab surface from which we derive a relation (called β-tool) between the thermal gap across the crack and the unknown depth of the damage. In this way, by means of a fast survey, it is possible to distinguish between shallow and deep fractures (more than 15 mm deep), for which further specific analysis will be needed.

Originele taal-2	Engels
Pagina's (van-tot)	282-293
Aantal pagina's	12
Tijdschrift	International Journal of Heat and Mass Transfer
Volume	141
DOI's	https://doi.org/10.1016/j.ijheatmasstransfer.2019.06.082
Status	Gepubliceerd - 1 okt. 2019
Extern gepubliceerd	Ja

Financiering

This work has been supported by the FAR-FIS research project “TOSCA-FI” funded by Tuscany Region . We would like to thank Referees for their useful hints.

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10.1016/j.ijheatmasstransfer.2019.06.082

https://linkinghub.elsevier.com/retrieve/pii/S0017931018360277

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title = "Evaluation of fractures in a concrete slab by means of laser-spot thermography",

abstract = "The presence of cracks is a determining factor for the deterioration of reinforced concrete structures. Laser Spot Thermography (LST) is a fast and contactless technique for cracks identification. A computational procedure to characterize the crack depth by means of LST is presented here. We propose a heuristic form of the temperature at the concrete slab surface from which we derive a relation (called β-tool) between the thermal gap across the crack and the unknown depth of the damage. In this way, by means of a fast survey, it is possible to distinguish between shallow and deep fractures (more than 15 mm deep), for which further specific analysis will be needed.",

keywords = "Concrete fracture, Diagnostics, Inverse problems, Laser-spot thermography, Nondestructive evaluation, Thermography",

author = "Agnese Scalbi and Roberto Olmi and Gabriele Inglese",

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AU - Olmi, Roberto

AU - Inglese, Gabriele

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N2 - The presence of cracks is a determining factor for the deterioration of reinforced concrete structures. Laser Spot Thermography (LST) is a fast and contactless technique for cracks identification. A computational procedure to characterize the crack depth by means of LST is presented here. We propose a heuristic form of the temperature at the concrete slab surface from which we derive a relation (called β-tool) between the thermal gap across the crack and the unknown depth of the damage. In this way, by means of a fast survey, it is possible to distinguish between shallow and deep fractures (more than 15 mm deep), for which further specific analysis will be needed.

AB - The presence of cracks is a determining factor for the deterioration of reinforced concrete structures. Laser Spot Thermography (LST) is a fast and contactless technique for cracks identification. A computational procedure to characterize the crack depth by means of LST is presented here. We propose a heuristic form of the temperature at the concrete slab surface from which we derive a relation (called β-tool) between the thermal gap across the crack and the unknown depth of the damage. In this way, by means of a fast survey, it is possible to distinguish between shallow and deep fractures (more than 15 mm deep), for which further specific analysis will be needed.

KW - Concrete fracture

KW - Diagnostics

KW - Inverse problems

KW - Laser-spot thermography

KW - Nondestructive evaluation

KW - Thermography

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VL - 141

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JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

Evaluation of fractures in a concrete slab by means of laser-spot thermography

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