A technique for monitoring the process of repairing crack based on a concrete implantable module and a data fusion algorithm

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (8) : 186-193.

YANG Ziqian1,2,CHEN Qingjun1,2,SUN Xiangtao1,2,KONG Qingzhao1,2

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Abstract

Crack repairing receives increasing attentions for aging and damaged concrete structures. Real-time assessment of crack repairing process is of great significance to timely ensure the structural performance recovery condition in construction. An innovative technique for monitoring the process of crack repairing was presented, including a novel concrete implantable module design, a data fusion-based method to evaluate the repairing work. The designed module can be implanted into structure to actuate and receive multi-path stress waves using the embedded piezoceramic sensing elements array. The sampling data in different moments can be fused in the Minkowski distance for a comprehensive reflection of the repairing work. The finite element study reveals the characteristic of stress-wave propagation at the repairing crack interface. Relative energy and correlation coefficient fused by Minkowski distance are proposed to access the crack repair work, respectively; their feasibility to characterize the hydration process of repairing material is demonstrated via a three-dimensional model. Finally, an experimental study was conducted to verify the feasibility of the proposed technique using for monitoring the crack repairing process.

Key words

concrete implantable module / repairing crack / data fusion / Minkowski distance

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YANG Ziqian1,2,CHEN Qingjun1,2,SUN Xiangtao1,2,KONG Qingzhao1,2 . A technique for monitoring the process of repairing crack based on a concrete implantable module and a data fusion algorithm[J]. Journal of Vibration and Shock, 2023, 42(8): 186-193

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