一种基于可拆卸压电陶瓷传感器和机电阻抗共振技术的混凝土保护层脱空检测方法及系统
By using detachable piezoelectric ceramic sensors and electromechanical anti-resonance technology, rapid location and quantitative assessment of concrete protective layer voids are achieved, solving the problems of low efficiency and small coverage in existing technologies and providing an efficient and flexible detection method.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE HONG KONG POLYTECHNIC UNIV
- Filing Date
- 2025-03-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are inefficient, have a small coverage area, and are highly sensitive to environmental conditions when detecting voids in concrete protective layers, making it difficult to achieve rapid and flexible location and quantitative assessment.
A detachable piezoelectric ceramic sensor and mechatronics resonance technology are used. The sensor is temporarily fixed at the detection point, an AC sweep voltage excitation is applied, the spectrum of the mechatronics signal is analyzed, the frequency of the resonance peak of the local defect is obtained, the geometric parameters of the void region are estimated using the defect size and frequency relationship model, and the sensor is moved to perform multi-point detection.
It enables rapid and flexible localization and quantitative assessment of voiding damage, with fast single-point detection speed, high efficiency, strong anti-interference ability, no need for baseline data, and is suitable for detection in any environment.
Smart Images
Figure CN121410054B_ABST