The development of acoustic emission for leak detection and location in liquid-filled, buried pipelines

被引：2

作者：

Miller, RK ^{[1
]}

Pollock, AA ^{[1
]}

Finkel, P ^{[1
]}

Watts, DJ ^{[1
]}

Carlyle, JM ^{[1
]}

Tafuri, AN ^{[1
]}

Yezzi, JJ ^{[1
]}

机构：

[1] Phys Acoust Corp, Engn Serv & Inspect Grp, Lawrenceville, NJ 08648 USA

来源：

ACOUSTIC EMISSION: STANDARDS AND TECHNOLOGY UPDATE | 1999年 / 1353卷

关键词：

acoustic emission; leak detection; source location; buried pipelines; liquid-filled pipelines; laboratory reference standards;

D O I：

10.1520/STP15781S

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Acoustic Emission leak detection and location for liquid-filled, buried pipelines was studied using various leak sources and laboratory reference standards, These standards provided significant data that have contributed to the development of test procedures for generating two-phase flow and a better understanding of the leak mechanism.. Results are discussed for leak signal enhancement due to two-phase flow, leak orientation and the presence of backfill surrounding the pipe. Field studies were performed on buried pipes to demonstrate that small leaks (less than 0.1 gallons/hour or 0.1 mL/second) can be detected under the right:test conditions and that the location of these small leaks can be determined using a variety of location methods. Among the different location methods examined was:a location technique referred teas "tuned" linear location. In addition, a modification to the conventional Signal Difference location technique is discussed.

引用

页码：67 / 78

页数：12