NDLI: On-line pseudo-dynamic network testing on base-isolated bridges using Internet and wireless Internet

Content Provider	Springer Nature Link
Author	Park, D U. Yun, C B. Lee, J W. Nagata, K. Watanabe, E. Sugiura, K.
Copyright Year	2005
Abstract	In this paper we present the results of the online pseudo-dynamic network testing using the Internet that were jointly conducted by several institutions in Korea and Japan. Example studies were performed on base-isolated bridges with four continous spans. Test facilities located at several institutions were interactively used to test the non-linear behaviors of the base isolators. At first, a series of international network tests was carried out between Japan and Korea, and the performance of two system configurations with different data communication schemes was compared. Then, network tests were repeated on a similar bridge structure between two institutions in Korea, and the overall performance was discussed. A web-based Java monitoring system was developed for checking the partners' testing conditions and for sharing the test results with the authorized observers. Wireless Internet technology using mobile phones was also investigated. The results indicate that the time to execute a single step varies widely, depending on the data communication/sharing schemes and the testing hardware, e.g., 0.2–15 s for data communication and 1–10 s for execution of the pseudo-dynamic tests for each time-step. The time required additionally for data communication in the on-line network testing is judged as reasonable in comparison with the time for the pseudo-dynamic test. The results also show that the wireless communication is very attractive for on-line network testing, owing to the mobility and Internet security.
Starting Page	331
Ending Page	343
Page Count	13
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	45
Issue Number	4
e-ISSN	17412765
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Internet on-line pseudo-dynamic network test data communication schemes web-based Java monitoring system wireless Internet using mobile phones Theoretical and Applied Mechanics Structural Mechanics Engineering Fluid Dynamics Mechanical Engineering Engineering Design Characterization and Evaluation Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

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