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Buildings such as bridges and drilling rigs can produce fatigue cracks due to vibration and can often lead to catastrophic consequences. Therefore, timely monitoring of the degree of fatigue of building materials is of great significance in ensuring the safety of buildings. In order to detect the strain effect of this paint, first, a small piece of such paint is applied to a piece of metal member and is covered with a conductive coating. Then, a voltage is applied to the coating so that the crystals in the coating form the correct angle with the surface of the component so that the component can generate a corresponding electrical signal no matter what direction the component is subjected to. Next, an electrode is added between the conductive coating and the metal member. When tapping a metal component, an electrical signal generated by the vibration of the component of the smart coating can be detected. The greater the strength of the tapping, the stronger the generated electrical signal.
This new type of paint provides a simple and easy way to detect vibration of components. The engineers and technicians can use this type of paint to calculate their fatigue levels by monitoring the vibration of the components during the entire service life of the building components. Not only can they understand the quality of components in a timely manner, but they can also build lighter components on this basis. , cheaper, more elegant buildings.
British scientists study to create a new type of smart paint
In January 2004, scientists at the University of Newcastle in the UK studied to produce a new type of smart paint. This coating contains a fine piezoelectric crystal called PZT. When this crystal is stretched and squeezed, it produces an electrical signal that is proportional to the external force. By analyzing these electrical signals, you can understand The degree of fatigue of building materials.