DOI QR코드

DOI QR Code

Non-invasive acceleration-based methodology for damage detection and assessment of water distribution system

  • Shinozuka, Masanobu (Department of Civil and Environmental Engineering, University of California) ;
  • Chou, Pai H. (Department of Electrical Engineering and Computer Science, University of California) ;
  • Kim, Sehwan (Department of Electrical Engineering and Computer Science, University of California) ;
  • Kim, Hong Rok (Center of Embedded Software Technology) ;
  • Karmakar, Debasis (Department of Civil and Environmental Engineering, University of California) ;
  • Fei, Lu (College of Civil Engineering, Southeast University)
  • 투고 : 2009.10.15
  • 심사 : 2010.03.18
  • 발행 : 2010.07.25

초록

This paper presents the results of a pilot study and verification of a concept of a novel methodology for damage detection and assessment of water distribution system. The unique feature of the proposed noninvasive methodology is the use of accelerometers installed on the pipe surface, instead of pressure sensors that are traditionally installed invasively. Experimental observations show that a sharp change in pressure is always accompanied by a sharp change of pipe surface acceleration at the corresponding locations along the pipe length. Therefore, water pressure-monitoring can be transformed into acceleration-monitoring of the pipe surface. The latter is a significantly more economical alternative due to the use of less expensive sensors such as MEMS (Micro-Electro-Mechanical Systems) or other acceleration sensors. In this scenario, monitoring is made for Maximum Pipe Acceleration Gradient (MPAG) rather than Maximum Water Head Gradient (MWHG). This paper presents the results of a small-scale laboratory experiment that serves as the proof of concept of the proposed technology. The ultimate goal of this study is to improve upon the existing SCADA (Supervisory Control And Data Acquisition) by integrating the proposed non-invasive monitoring techniques to ultimately develop the next generation SCADA system for water distribution systems.

키워드

참고문헌

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