Reliability of ultrasonic measurement of thickness loss caused by corrosion

Y. Yassen, M. P. Ismail, Abdul Aziz Jemain, A. R. Daud

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The reliability of the ultrasonic technique for corrosion monitoring was assessed by using bivariate least squares (BLS) regression. The loss of thickness in corroded samples was measured using micrometer and ultrasonic methods. Micrometer measurement is quite accurate but it requires access to both sides of the structure. On the other hand, ultrasonic thickness measurement is fast but its accuracy is often doubtful. If both methods provide mean readings with comparable accuracy, then applying BLS regression would produce a straight line with an intercept and slope that are not significantly different from 0 and 1, respectively. A statistical test was applied to compare the obtained intercept and slope values with their respective theoretical values. In this work, a thickness gauge and a flaw detector were used to measure a thickness loss between 0.20 mm and 2.20 mm. The results showed that the mean measurement using the thickness gauge is more accurate than that using the flaw detector.

Original languageEnglish
Pages (from-to)658-663
Number of pages6
JournalInsight: Non-Destructive Testing and Condition Monitoring
Volume53
Issue number12
DOIs
Publication statusPublished - Dec 2011

Fingerprint

Thickness gages
Ultrasonic measurement
Ultrasonics
Corrosion
Detectors
Defects
Thickness measurement
Statistical tests
Monitoring

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Reliability of ultrasonic measurement of thickness loss caused by corrosion. / Yassen, Y.; Ismail, M. P.; Jemain, Abdul Aziz; Daud, A. R.

In: Insight: Non-Destructive Testing and Condition Monitoring, Vol. 53, No. 12, 12.2011, p. 658-663.

Research output: Contribution to journalArticle

Yassen, Y. ; Ismail, M. P. ; Jemain, Abdul Aziz ; Daud, A. R. / Reliability of ultrasonic measurement of thickness loss caused by corrosion. In: Insight: Non-Destructive Testing and Condition Monitoring. 2011 ; Vol. 53, No. 12. pp. 658-663.
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