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Li, Zongjin; Yao, Wu; Lee, Stephen K.L.; Lee, Chihung; Yang, Zheng

doi:10.1023/a:1006612023656

Cited by 35 publications

(5 citation statements)

References 4 publications

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“…The difference from outdoor tests is that a field survey cannot control delamination properties; thus, some studies have compared the results using other NDTs [20,131,160]. Another disadvantage is the influence of noise, for example, reflections from surroundings [175,176], emissivity variation on the surface [27], subsurface material differences [97], and uneven solar heat gain [97]. In addition, thermal contrast can be caused by other subsurface defects, such as water penetration and high moisture content [20,176,177].…”

Section: Test Methodsmentioning

confidence: 99%

“…Another disadvantage is the influence of noise, for example, reflections from surroundings [175,176], emissivity variation on the surface [27], subsurface material differences [97], and uneven solar heat gain [97]. In addition, thermal contrast can be caused by other subsurface defects, such as water penetration and high moisture content [20,176,177].…”

Section: Test Methodsmentioning

confidence: 99%

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A Review of Infrared Thermography for Delamination Detection on Infrastructures and Buildings

Tomita

Chew

2022

Sensors

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This paper provides a comprehensive review on the use of infrared thermography to detect delamination on infrastructures and buildings. Approximately 200 pieces of relevant literature were evaluated, and their findings were summarized. The factors affecting the accuracy and detectability of infrared thermography were consolidated and discussed. Necessary measures to effectively capture latent defects at the early stage of delamination before crack formation were investigated. The results of this study could be used as the benchmarks for setting standardized testing criteria as well as for comparison of results for future works on the use of infrared thermography for detection of delamination on infrastructures and buildings.

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Section: Test Methodsmentioning

confidence: 99%

Section: Test Methodsmentioning

confidence: 99%

A Review of Infrared Thermography for Delamination Detection on Infrastructures and Buildings

Tomita

Chew

2022

Sensors

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“…Moreover, as in Figure 9b, in the case where the seamless insulation was installed in the external wall, separating from the internal wall, the measurement showed a good condition of the internal wall without condensation and mold. The thermography techniques for detecting defects in building envelopes, such as missing insulation, thermal bridging, and cracks and moisture problems, using a thermal imaging camera, have been discussed in various studies [55][56][57]; thus, no detailed explanation is given in this study. Further examples of improvements can be found in the Appendix A.…”

Section: Integrated Solutions For Defectsmentioning

confidence: 99%

Design, Construction, and Curing Integrated Management of Defects in Finishing Works of Apartment Buildings

2021

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The site analysis performed in the last ten years has found that building defects result from inconsistent decision-making and performance in the design, construction, and curing (DCC) processes. Therefore, for sustainable quality control, DCC integrated analysis and the management of causes by type and response measures should be in place. The objective of this study is to propose DCC integrated management of defects in finishing works of apartment buildings. To this end, the study surveyed 69,944 defects from 3299 apartment households and analyzed the defect types and causes by project stage. As a result, in the case of opening work (WT1), opening and closing (DT1) accounted for the highest proportion at 35.7%. In the case of furnishing work (WT2), floor installation (DT1) has the most defects. Moreover, the proposed integrated defect management technique was applied onsite, which resulted in an improvement where the defect frequency decreased by 56.80%. The results of this study will be used as the basic data for high-quality finishing projects, and the proposed management concept can be used as reference data in the establishment of a defect management system.

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“…Solar loading thermography [2,[26][27][28][29] is a promising NDT approach for inspecting large civil engineering constructions. In such applications, it is difficult, sometimes impossible, to thermally stimulate the tested object with an artificial energy source.…”

Section: Solar Loading Thermographymentioning

confidence: 99%

Multiscale Analysis of Solar Loading Thermographic Signals for Wall Structure Inspection

Ibarra-Castanedo

Сфарра

et al. 2021

Sensors

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Infrared thermography has been widely adopted in many applications for material structure inspection, where data analysis methods are often implemented to elaborate raw thermal data and to characterize material structural properties. Herein, a multiscale thermographic data analysis framework is proposed and applied to building structure inspection. In detail, thermograms are first collected by conducting solar loading thermography, which are then decomposed into several intrinsic mode functions under different spatial scales by multidimensional ensemble empirical mode decomposition. At each scale, principal component analysis (PCA) is implemented for feature extraction. By visualizing the loading vectors of PCA, the important building structures are highlighted. Compared with principal component thermography that applies PCA directly to raw thermal data, the proposed multiscale analysis method is able to zoom in on different types of structural features.

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Untitled

Cited by 35 publications

References 4 publications

A Review of Infrared Thermography for Delamination Detection on Infrastructures and Buildings

A Review of Infrared Thermography for Delamination Detection on Infrastructures and Buildings

Design, Construction, and Curing Integrated Management of Defects in Finishing Works of Apartment Buildings

Multiscale Analysis of Solar Loading Thermographic Signals for Wall Structure Inspection

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