Strain sensor belongs to the category of physical sensor, which can measure the strain change of material under the action of external force. In practical application, strain sensors can be widely used in mechanics, material science, civil engineering, chemical industry, environmental protection and other industries to measure various stresses and deformations. The following are some cases of strain sensor application.
Bridge strain monitoring
As an important transportation infrastructure, bridges need to bear great loads and the influence of natural environment. In order to ensure the safety of the bridge, it must be comprehensively monitored. Strain sensor can be used to measure the strain change of bridge and realize the health monitoring of bridge structure. Taking Huairou Great Wall Bridge in Beijing as an example, strain sensors are used to monitor the strain of the bridge, which has achieved remarkable results in bridge fatigue detection and health assessment.
Electric power industry application
Strain sensors can also be used in power industry to measure the strain values of power transformers, generators, cables and other equipment, so as to realize condition monitoring and fault diagnosis of equipment. For example, the impeller of a power plant in Shandong is equipped with a strain sensor, which can measure the running state of the impeller in real time, grasp the running situation of the unit and ensure the stability of power production.
Pipeline stress monitoring
In the petrochemical industry, the pipeline can be several kilometers long, and it needs to bear huge internal pressure and temperature changes, which is easy to produce stress concentration and accelerate corrosion. In order to ensure the safety and stability of the pipeline, strain sensors can be used to measure the stress of the pipeline and monitor the changes of the pipeline in real time. For example, installing strain sensors on the main pipeline of oil and gas pipeline system can continuously monitor the stress change of the pipeline and improve the ability of pipeline maintenance and fault prediction.
Application in aerospace field
In the aerospace field, strain sensors also have important application value. Taking the stress analysis of aerospace materials as an example, strain sensors can be used to measure the strain of various materials during high-speed flight to ensure the stability of materials in strong vibration and environmental changes, and to ensure the safety and stability of aircraft systems. At the same time, strain sensors can also be used to measure the fatigue life of carrier materials such as ships and rockets.
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In a word, strain sensor is a kind of sensor widely used in engineering field, and its application range is very wide. Both the strain monitoring of bridges and the stress monitoring of oil and gas pipelines are inseparable from the application of this sensor. However, it should be noted that strain sensors need to be adjusted and calibrated according to specific application scenarios and physical environment conditions in order to obtain more accurate and reliable data.