Nonlinear Rayleigh waves to detect initial damage leading to stress corrosion cracking in carbon steel

K. H. Matlack, J. Y. Kim, L. J. Jacobs, J. Qu, P. M. Singh

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

Abstract

This research experimentally investigates second harmonic generation of Rayleigh waves propagating through carbon steel samples damaged in a stress corrosion environment. Damage from stress corrosion cracking is of major concern in nuclear reactor tubes and in gas and fuel transport pipelines. For example, certain types of stress corrosion cracking (SCC) account for more failures in steam generator tubes than most other damage mechanisms, yet these cracks do not initiate until late in the structure's life. Thus, there is a need to be able to measure the damage state prior to crack initiation, and it has been shown that the acoustic nonlinearity parameter - the parameter associated with second harmonic generation - is sensitive to microstructural evolution. In this work, samples are immersed in a sodium carbonate-bicarbonate solution, which typically forms in the soil surrounding buried pipelines affected by SCC, and held at yield stress for 5-15 days to the onset of stress corrosion cracking. Measurements of second harmonic generation with Rayleigh waves are taken intermittently to relate cumulative damage prior to macroscopic cracking to nonlinear wave propagation. Experimental results showing changes in second harmonic generation due to stress corrosion damage are presented.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Pages1452-1459
Number of pages8
Edition31
DOIs
StatePublished - Jul 13 2012
Externally publishedYes
Event38th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - Burlington, VT, United States
Duration: Jul 17 2011Jul 22 2011

Publication series

NameAIP Conference Proceedings
Number31
Volume1430
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other38th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
CountryUnited States
CityBurlington, VT
Period7/17/117/22/11

Keywords

  • Nonlinear Guided Waves
  • Stress Corrosion Cracking
  • Ultrasonic Testing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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