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Discussion of “Case Studies of Leak Detection and Location in Water Pipe Systems by Inverse Transient Analysis” by Dídia Covas and Helena Ramos
Publisher: American Society of Civil Engineers
Wavelets for the Analysis of Transient Pressure Signals for Leak Detection
Publisher: American Society of Civil Engineers
Abstract: Transient tests can be reliably used for the diagnosis of pressurized pipe systems. As a matter of fact, the pressure signals acquired during these tests can reveal the presence of anomalies, e.g., leaks, since any ...
Discussion of “Detection of Partial Blockage in Single Pipelines” by P. K. Mohapatra, M. H. Chaudhry, A. A. Kassem, and J. Moloo
Publisher: American Society of Civil Engineers
In-Line Pipe Device Checking by Short-Period Analysis of Transient Tests
Publisher: American Society of Civil Engineers
Abstract: In this paper, the results of laboratory transient tests concerning the interaction between a pressure wave and an in-line device are discussed. Transients are generated by means of a fast and complete closing of an end ...
Discussion of “Single-Event Leak Detection in Pipeline Using First Three Resonant Responses” by Jinzhe Gong, Martin F. Lambert, Angus R. Simpson, and Aaron C. Zecchin
Publisher: American Society of Civil Engineers
Experimental Study of the Eigenfrequency Shift Mechanism in a Blocked Pipe System
Publisher: American Society of Civil Engineers
Abstract: Eigenfrequency shift in a pipe with a blockage is investigated experimentally. The experimental test rig consists of a reservoir-pipe-valve (RPV) system that contains a single partial blockage. Blockages with different ...
Bragg-Type Resonance in Blocked Pipe System and Its Effect on the Eigenfrequency Shift
Publisher: American Society of Civil Engineers
Abstract: Recent studies of measured transient pressure signals showed that eigenfrequencies shift with changes in cross-sectional area of the conduit and used this fact to develop blockage-detection algorithms. However, an understanding ...
Experimental Evidence of Hysteresis in the Head-Discharge Relationship for a Leak in a Polyethylene Pipe
Publisher: American Society of Civil Engineers
Abstract: The relationship between leak outflow from a damaged pipe and flow condition inside the pipe plays a crucial role in pressurized pipe systems management. As an example, this relationship is used in leakage reduction ...
Potential of Transient Tests to Diagnose Real Supply Pipe Systems: What Can Be Done with a Single Extemporary Test
Publisher: American Society of Civil Engineers
Abstract: In this paper, the reliability of a transient test-based technique as a powerful tool in the management of real supply pipe systems is shown. The pressure signal acquired during the first phase of the single completed test ...
Stochastic Approach for the Analysis of Demand Induced Transients in Real Water Distribution Systems
Publisher: ASCE
Abstract: A stochastic approach for modeling and analysing the transients due to the users’ water consumptions in a real water distribution system is presented. The analysis is based on field measurements of water consumption at ...