Phased antenna array resolution enhancement for inspection of underwater crossings of pipelines

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is shown that available methods and devices for testing leakage of underwater pipelines do not allow to determine a defect location to high accuracy. In this view, it is suggested to receive the signals coming from acoustic emission by transducers of two-dimensional phased antenna array (PAA). It is demonstrated that an optimal way of PAA signal processing is the combination of pair multiplication with the subsequent algebraic summation of signals from several transducers. On the basis of the suggested method, the device PAL-121 was developed, which allows to determine a location of defects by means of two-dimensional representation of acoustic field of the inspection space.

Original languageEnglish
Title of host publication10th IMEKO TC7 Symposium on Advances of Measurement Science 2004
PublisherIMEKO-International Measurement Federation Secretariat
Pages357-360
Number of pages4
ISBN (Print)9781634391887
Publication statusPublished - 2004
Event10th IMEKO TC7 Symposium on Advances of Measurement Science 2004 - St. Petersburg, Russian Federation
Duration: 30 Jun 20042 Jul 2004

Other

Other10th IMEKO TC7 Symposium on Advances of Measurement Science 2004
CountryRussian Federation
CitySt. Petersburg
Period30.6.042.7.04

Keywords

  • Acoustic emission
  • Phased antenna array signal processing
  • Ultrasonoscopy
  • Underwater pipeline

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation

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