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

Research output: Contribution to journal › Article › Academic › peer-review

12 Citations (Scopus)

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.

Original language	English
Pages (from-to)	282-293
Number of pages	12
Journal	International Journal of Heat and Mass Transfer
Volume	141
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2019.06.082
Publication status	Published - 1 Oct 2019
Externally published	Yes

Funding

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.

Keywords

Concrete fracture
Diagnostics
Inverse problems
Laser-spot thermography
Nondestructive evaluation
Thermography

Access to Document

10.1016/j.ijheatmasstransfer.2019.06.082

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

Cite this

@article{7e374d11aa5446b1bc06ec6831493970,

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",

year = "2019",

month = oct,

day = "1",

doi = "10.1016/j.ijheatmasstransfer.2019.06.082",

language = "English",

volume = "141",

pages = "282--293",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

publisher = "Elsevier",

}

TY - JOUR

T1 - Evaluation of fractures in a concrete slab by means of laser-spot thermography

AU - Scalbi, Agnese

AU - Olmi, Roberto

AU - Inglese, Gabriele

PY - 2019/10/1

Y1 - 2019/10/1

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

UR - https://www.scopus.com/pages/publications/85067974358

U2 - 10.1016/j.ijheatmasstransfer.2019.06.082

DO - 10.1016/j.ijheatmasstransfer.2019.06.082

M3 - Article

AN - SCOPUS:85067974358

SN - 0017-9310

VL - 141

SP - 282

EP - 293

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

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this