Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics

Real-time assessment of timber-surface crack repair is crucial to the stability and safety of timber structures. Epoxy resin was used to repair timber cracks, and the active sensing technique using piezoelectric ceramics was applied to monitor the repair process of timber surface cracks in real time...

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Autores principales:	Huien Meng, Wenwei Yang, Xia Yang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Technology (General) T1-995
Acceso en línea:	https://doaj.org/article/795c741bfa214a02a8d8caa463962fe0
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spelling	oai:doaj.org-article:795c741bfa214a02a8d8caa463962fe02021-11-08T02:36:18ZReal-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics1687-726810.1155/2021/8201780https://doaj.org/article/795c741bfa214a02a8d8caa463962fe02021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/8201780https://doaj.org/toc/1687-7268Real-time assessment of timber-surface crack repair is crucial to the stability and safety of timber structures. Epoxy resin was used to repair timber cracks, and the active sensing technique using piezoelectric ceramics was applied to monitor the repair process of timber surface cracks in real time. Sixteen wood samples were designed for axial compression tests and active monitoring tests. A pair of lead zirconate titanate patches was pasted on the surface of the timber specimens as actuators and sensors for signal transmission and reception, through wavelet packet analysis, the variations in the signal amplitude, and wavelet coefficients. The relationship between the wavelet packet energy of the monitoring signal and the ultimate bearing capacity of the specimens at different periods after grouting was established. Based on the root-mean-square deviation, the damage index, DI, was introduced to evaluate the repair degree of timber surface cracks quantitatively. The results showed that the active sensing method can evaluate the strength development in timber-surface crack repair in real time.Huien MengWenwei YangXia YangHindawi LimitedarticleTechnology (General)T1-995ENJournal of Sensors, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology (General) T1-995
spellingShingle	Technology (General) T1-995 Huien Meng Wenwei Yang Xia Yang Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
description	Real-time assessment of timber-surface crack repair is crucial to the stability and safety of timber structures. Epoxy resin was used to repair timber cracks, and the active sensing technique using piezoelectric ceramics was applied to monitor the repair process of timber surface cracks in real time. Sixteen wood samples were designed for axial compression tests and active monitoring tests. A pair of lead zirconate titanate patches was pasted on the surface of the timber specimens as actuators and sensors for signal transmission and reception, through wavelet packet analysis, the variations in the signal amplitude, and wavelet coefficients. The relationship between the wavelet packet energy of the monitoring signal and the ultimate bearing capacity of the specimens at different periods after grouting was established. Based on the root-mean-square deviation, the damage index, DI, was introduced to evaluate the repair degree of timber surface cracks quantitatively. The results showed that the active sensing method can evaluate the strength development in timber-surface crack repair in real time.
format	article
author	Huien Meng Wenwei Yang Xia Yang
author_facet	Huien Meng Wenwei Yang Xia Yang
author_sort	Huien Meng
title	Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
title_short	Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
title_full	Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
title_fullStr	Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
title_full_unstemmed	Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics
title_sort	real-time monitoring of timber-surface crack repair using piezoelectric ceramics
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/795c741bfa214a02a8d8caa463962fe0
work_keys_str_mv	AT huienmeng realtimemonitoringoftimbersurfacecrackrepairusingpiezoelectricceramics AT wenweiyang realtimemonitoringoftimbersurfacecrackrepairusingpiezoelectricceramics AT xiayang realtimemonitoringoftimbersurfacecrackrepairusingpiezoelectricceramics
_version_	1718443106874949632

Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics

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