Development of Leak Detection System of Heat Exchanger using Acoustic Emission Technique

2002 ◽  
Vol 26 (5) ◽  
pp. 864-871
Author(s):  
Min-Rae Lee ◽  
Jun-Hyeon Lee
Keyword(s):  
Acoustic Emission ◽  
Heat Exchanger ◽  
Detection System ◽  
Leak Detection ◽  
Acoustic Emission Technique

Acoustic emission technique for leak detection in an end shield of a pressurised heavy water reactor

1989 ◽  
Vol 116 (2) ◽  
pp. 181-185 ◽  
Author(s):  
P. Kalyanasundaram ◽  
T. Jayakumar ◽  
B. Raj ◽  
C.R.L. Murthy ◽  
A. Krishnan
Keyword(s):  
Acoustic Emission ◽  
Heavy Water ◽  
Leak Detection ◽  
Acoustic Emission Technique ◽  
Water Reactor ◽  
Heavy Water Reactor

Leak Detection of the Pipeline Using Acoustic Emission Technique

2004 ◽  
Author(s):  
Min-Rae Lee ◽  
Joon-Hyun Lee
Keyword(s):  
Computer Simulation ◽  
Acoustic Emission ◽  
Wavelet Transform ◽  
Circular Hole ◽  
Leak Detection ◽  
Mechanical Parameters ◽  
Acoustic Emission Technique ◽  
Acoustic Parameters ◽  
Aerodynamic Model ◽  
Simulation Results

This paper presents an approach to leak detection of pipeline review in term of theoretical analysis such as acoustics and hydromechanics that should be accompanied by explanation of leakage. The acoustic emission signals during leak from a circular hole of different geometries were studied both analytically and experimentally. The relationships between acoustic parameters and fluid mechanical parameters also were derived analytically. A quadrupole aerodynamic model was applied in the analysis of leak form the circular hole. Computer simulation results demonstrate the effectiveness of the proposed approach. In addition, the leak source location results are also presented by employing the wavelet transform.

The Use of Acoustic Emission for Leak Detection in Steel Pipe

2015 ◽  
Vol 771 ◽  
pp. 88-91
Author(s):  
I.B. Ardhana Putra ◽  
Iwan Prasetiyo ◽  
Dewi Permata Sari
Keyword(s):  
Acoustic Emission ◽  
Detection System ◽  
Propagation Constant ◽  
Leak Detection ◽  
Galvanized Steel ◽  
Steel Pipe ◽  
Experimental Result ◽  
Digital Oscilloscope ◽  
Ae Signal ◽  
Experimental Rig

A leak detection system using acoustic emission methods is developed. For this, an experimental rig to detect leak was built using 8” galvanized steel pipe. The length of the pipe is 2 meters. A leak was made with 3 mm diameter and located in 1 meter from the end pipe. The pipe was filled with water and compressed until certain pressure reached. An acoustic emission transducer from Brüel and Kjær type 8313 is mounted on the pipe wall and connected to digital oscilloscope to detect AE signal. The experiment conducted by placing a sensor at a distance of 15 cm, 30 cm, 45 cm, 60 cm, and 75 cm from the position of the leak. Measurements were also performed with the variation of the pressure 3 bar, 4 bars, 5 bars, 6 bars, and 7 bar for those points.Considering acoustic emission wave travelling on pipe is plane wave, leak detection using energy attenuation emission become possible that is different from the method commonly used. Propagation constant is thus required and obtained based on experimental result where the amplitude varies with the spatial and pressure. It is found that for the case considered here. Subsequently, distance of leak location can be determined by the propagation constant and the ratio of energy. Using this method, the error of prediction is about 15.8 %.

Development of Leak Detection System for PVC Pipeline Through Vibro-Acoustic Emission

2018 ◽  
Author(s):  
Daniel C. Ferino ◽  
Raniel P. Jose ◽  
John Revilo M. Ochoa ◽  
Vincci V. Villamiel ◽  
Jasper Meynard P. Arana
Keyword(s):  
Acoustic Emission ◽  
Detection System ◽  
Leak Detection

Pipeline Leak Detection System for Oil and Gas Flowlines

1997 ◽  
Vol 119 (1) ◽  
pp. 105-109 ◽  
Author(s):  
J. M. Rajtar ◽  
R. Muthiah
Keyword(s):  
Acoustic Emission ◽  
Oil And Gas ◽  
Production Systems ◽  
Detection System ◽  
Leak Detection ◽  
Production Costs ◽  
Closed Field ◽  
Two Phase ◽  
Expected Performance ◽  
Potential Applications

Petroleum fluids in production systems are frequently transported by surface steel pipelines of low diameter working at low pressures and under a two-phase flow regime. These pipelines operate without permanent, continuous supervision for leaks. The leaked volume is usually high before the leak is noticed and stopped. High leak volumes pollute the environment and increase production costs. This paper describes the expected performance of the acoustic emission leak detection system for low pressure flowlines in oil and gas gathering installations. The developed system detects acoustic emission signals generated by leaks. Specific features of the system are discussed. The system was tested in a closed field scale two-phase flowloop. Example results of tests are reported. The paper is completed with conclusions and discussion of potential applications of the system.

scholarly journals Nondestructive Detection of Valves Using Acoustic Emission Technique

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Jin Yan ◽  
Yang Heng-hu ◽  
Yang Hong ◽  
Zhang Feng ◽  
Liu Zhen ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Condition Monitoring ◽  
Detection System ◽  
Theoretical Models ◽  
Acoustic Emission Technique ◽  
Nondestructive Detection ◽  
Basic Composition ◽  
Measuring Devices ◽  
Cavitation Detection ◽  
Ae Signals

The applications of acoustic emission (AE) technique in detection of valves are presented in this review, and the theoretical models and experimental results of nondestructive detection of valves using AE are provided. The generation of AE signals and the basic composition of AE detection system are briefly explained. The applications of AE technique in valves are focused on condition monitoring, failure, cavitation detection, and the development of portable measuring devices. All results prove that the AE technique works well in the detection of valves.

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