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Modern larger span structures calls for modular automatic, reinforced with manual instruments, structural health monitoring instruments and WAN&LAN monitoring software from which monitoring data query, analysis and assessment can be done at the same time. In this paper, wireless stress and strain measurement facility for steel structure, cable tensile force measurement technology, membrane...
The paper introduces a non-destructive testing (NDT) method-Acoustic Emission (AE) technique to detect active crack in steel structure of large lifting machinery used in hydropower stations. A test apparatus has been established, in which a beam with seeded cracks was loaded using a press machine. AE signals were collected during the test. Due to the complexity of the AE signals, Empirical Mode Decomposition...
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