Scheme Design and Experimental Study of Selective Thermal Stimulation for Concrete Microcracks Based on IR Thermography

Wang, Yulei; Tang, Lei; Jia, Yu; Zhang, Shenghang

doi:10.1007/s10921-021-00756-y

Cited by 10 publications

(1 citation statement)

References 17 publications

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“…Its applications across infrastructures and buildings are extensive, including areas such as thermal insulation [17], internal structure analysis [18], detection of delamination [19], cracks [20,21], identification of air leakage [22], and preservation of cultural heritage [23][24][25]. Currently, most of the methods employed for infrared thermal imaging rely on active thermal stimulation [26][27][28][29]. However, these methods often face challenges in applying uniform thermal excitation and require a significant amount of stimulation time, which limits their practical application in engineering contexts.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Infrastructure Maintenance: Crack Depth Detection in Tunnel Linings via Natural Temperature Variations and Infrared Imaging

Gu,

Liu,

2024

Sustainability

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In this research, we propose the use of infrared detection methods for identifying cracks in the tunnel lining of concrete structures. Through thermal simulation experiments on pre-existing cracks, we investigate the heat conduction patterns in cracked linings under natural temperature variations. The influence of temperature differences inside and outside the lining, crack depth, and crack width on the temperature distribution on the inner surface of the lining is analyzed by using a controlled variable approach. This exploration aims to assess the feasibility and applicable conditions of using infrared thermal imaging technology for detecting lining crack defects, contributing to sustainable maintenance of infrastructure. We further validate the experimental approach through numerical simulations. Considering the temperature distribution on the inner surface of the lining, it becomes feasible to comprehensively determine the location and depth of cracks. This offers a novel and rapid inspection method for tunnel lining cracks, thereby enhancing the sustainability of tunnel infrastructure.

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