Liu Gui Wei

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Node positions in a wireless sensor network are required to track the nodes in real-time, but normally no prior information is given on deployment. A locating mechanism is required for such a purpose and in this paper a method is described to determine the point-to-point distance between two sensor nodes in an asynchronous location positioning system. A(More)
In this paper, the operation of the non-destructive inspection on composite structures has been investigated. The pitch/catch swept is used to detect the designed flaws of the laminated composite structures. Characteristics of the different types of defect are inspected. The signal processing is applied to the collected data to extract the defect(More)
In order to study effect of complementary pulp distribution, computational fluid dynamic (CFD) was used to research flow characteristic of hydraulic headbox based on complementary pulp distribution. Mass flow rate out of mixing chamber and velocity distribution at slice of headbox were experimented. The results showed that because of simplified design,(More)
It is necessary to evaluate the bridges conditions and strengthen bridges or parts of them. The reinforcement necessary due to some reasons can be summarized as: First, a changing in use of bridge could produce internal forces in a part of structural which exceed the existing cross-sectional capacity. Second, bridges may also need reinforcement because(More)
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