Concrete crack damage detection equipment application
Publish Time: 2018-12-04 Origin: Site
The increasingly performance of piezoelectric ceramic materials has made it the most widely used class of functional piezo ceramics. Not only used in industrial and civil products, such as ceramic filters, ceramic discriminators, ceramic attenuators in the communication equipment; underwater acoustic transducers and torpedo detectors for underwater communication and detection; radar, television,ceramic transformers and ceramic surface wave devices, but also a large number of applications in the military, such as the piezoelectric ceramics made of underwater acoustic transducers, can smoothly carry out underwater navigation, communication, reconnaissance enemy ships, cleaning enemy water mines for work; piezoelectric fuze made of piezoelectric ceramics can accurately ignite and kill weapons such as blasting bullets. In addition, it is also widely used in precision measurement, navigation, ultrasonic flaw detection, ultrasonic cleaning, and ultrasonic diagnosis. With the development of surface mount technology (SMT), multi-layer chip-forming of functional energy harvesting piezoelectric plate components, chip component integration, integrated component simulation and multi-function are gradually required. At present, the hottest issue of the latest research is how to realize the multi-functional integration of piezoelectric ceramics, and obtain a new type of piezoelectric device that is integrated, intelligent and miniaturized.
Piezoelectric plate piezoceramic transducers have many characteristics in precision detection equipment because of their subtle characteristics in the mutual conversion of mechanical energy and electrical energy, that is, there is obvious electrical signal feedback given a slight mechanical deformation. The common features of such applications are better measurement accuracy, strong anti-interference ability, and wide application range. It has a good application prospect in the detection of small changes.
Concrete crack damage detection equipment
Concrete materials are one of the main components of civil engineering structures. Cracks are the main damage factor to the safety of concrete structures. Therefore, the monitoring of concrete materials is very important. The methods of health monitoring of structures using piezo ceramic transducer is mainly divided into passive methods and active methods, while the latter can be divided into mechanical impedance methods and wave propagation methods. Among them, the wave propagation analysis method was originally proposed by the injury when the composite material was monitored. The method can effectively monitor the delamination and fatigue damage in the composite material, and has high sensitivity to crack in the metal. Drawing on the application of this method in composite monitoring, researchers have tried to use piezoelectric ceramics for health monitoring of concrete structures. The piezoelectric ceramic is buried in the concrete, and the crack damage signal is used to monitor the crack damage in the concrete. A smart concrete technology based on buried piezoelectric disc piezoelectric crystal was established.