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Gas turbine engine blades are subjected to severe fatigue which is caused by complex in-service environment. In fact, blade crack is one of the costliest sources of damage in gas turbine. Detection of cracks of blades is important to ensure safe and reliable operation of gas turbine engine. A vibration-based damage-detection methodology is presented in this paper to monitor the health condition of...
In this paper, a type of sensor for the non-contact monitoring of lightning and switching overvoltage in power grid is presented. It is designed based on Pockels effect and stray-capacity coupling theory. Double-crystal structure is utilized to restrain the unwanted influence caused by natural birefringence. The transmission of the data is achieved by optical fibers which are immune to the electromagnetic...
This paper introduces software for a monitoring system of the industrial furnace based on the c# language. Server and client interfaces are implied on the Windows's. Form class. The communication between the server and the client is realized though the socket class, which is included in the .NET class library. Most of the commonly useful information can be demonstrated in our system, such as gas concentration...
We demonstrate an adaptive polarization-state monitoring and stabilization scheme for one-way polarization-encoded QKD. Polarization references are sent at a repetition rate that is adapted to the polarization drift condition to maintain a low QBER.
Taking insulation condition of the submarine oil-filled cable which used in Hainan Interconnection Project as the research object, a new method of on-line monitoring has been put forward in the paper. To monitor the current of each phase cable which flowing through the grounding line and cable core by installing current sensors on the grounding line and cable itself respectively. The ratio of leakage...
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