Concrete structure implantable piezoelectric sensing module design and damage imaging method

By designing an implantable, self-generating and self-receiving piezoelectric sensing module, and using a columnar piezoelectric ceramic array and high-strength, low-shrinkage grout, the problem of unstable coupling between the sensor and the structure was solved, enabling long-term stable operation of the sensor and accurate detection of damage.

CN116482218BActive Publication Date: 2026-06-19TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Filing Date
2023-02-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve long-term stable coupling between sensors and structures in reinforced concrete structures, and sensor management and maintenance are inconvenient, affecting the efficiency and accuracy of damage detection.

Method used

An implantable, self-generating and self-receiving piezoelectric sensing module was designed. It adopts a columnar piezoelectric ceramic array, is encapsulated with high-strength, low-shrinkage grout, and implanted into the structure. Combined with a multi-hole aviation plug, it connects to external equipment to realize the acquisition of stress wave signals and damage imaging.

Benefits of technology

This technology enables sensors to operate stably for extended periods during the structural service life, facilitating management and replacement, reducing installation workload, improving the accuracy and efficiency of damage detection, and enabling precise location of structural damage.

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Abstract

This invention proposes a design and damage imaging method for implantable piezoelectric sensing modules in concrete structures, including the design and fabrication process of an implantable self-generating and self-receiving sensing module and a damage localization imaging method based on a columnar piezoelectric ceramic array. The implantable integrated sensing module of this invention provides a novel coupling method between the sensor and the structure, ensuring long-term stable operation of the sensor during the structure's service life, facilitating management during use, and enabling easy replacement in case of damage. The self-generating and self-receiving sensing module, with its embedded piezoelectric sensing array, allows for fewer sensor modules to be installed in the structure while still fully capturing structural damage information, reducing installation workload, and enabling more accurate damage localization imaging and structural condition assessment.
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