SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND.

Michael D. Fuller, Michael J. Avioli, Joseph Lawrence Rose

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

Abstract

Stainless steel piping used in the construction of nuclear power plants is susceptible to cracking in the form of intergranular stress corrosion cracking (IGSCC). Cracking can impair pipe structural integrity, thus ultrasonic inspections are carried out on a regular and scheduled basis. Once a crack has been detected during the course of an inspection, that crack must be properly sized in order to determine the integrity of the pipe section under examination. The morphology of IGSCC is radically different than that of a fatigue crack and traditional sizing methods have been shown to need substantial revision and development in order to yield satisfactory results. The EPRI has undertaken a substantial program in this regard. The goals of this program are many, among to produce techniques that yield accurate and reliable indications of size, and advance automated sizing, due to the high radiation environment that is often encountered. Several methods have been and are being researched. As part of this overall funding program the utility of low frequency ultrasonic sizing was explored. Low frequency, wide aperature ultrasound offers many advantages for sizing and the results of this research is encouraging, and when used in conjunction with other complimentary techniques can yield accurate measurements of crack size.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherInt Committee on Nondestructive Testing
Pages1480-1486
Number of pages7
ISBN (Print)0931403073
StatePublished - Dec 1 1985

Fingerprint

Stress corrosion cracking
Ultrasonics
Cracks
Inspection
Pipe
Structural integrity
Nuclear power plants
Stainless steel
Radiation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Fuller, M. D., Avioli, M. J., & Rose, J. L. (1985). SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND. In Unknown Host Publication Title (pp. 1480-1486). Int Committee on Nondestructive Testing.
Fuller, Michael D. ; Avioli, Michael J. ; Rose, Joseph Lawrence. / SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND. Unknown Host Publication Title. Int Committee on Nondestructive Testing, 1985. pp. 1480-1486
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Fuller, MD, Avioli, MJ & Rose, JL 1985, SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND. in Unknown Host Publication Title. Int Committee on Nondestructive Testing, pp. 1480-1486.

SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND. / Fuller, Michael D.; Avioli, Michael J.; Rose, Joseph Lawrence.

Unknown Host Publication Title. Int Committee on Nondestructive Testing, 1985. p. 1480-1486.

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

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N2 - Stainless steel piping used in the construction of nuclear power plants is susceptible to cracking in the form of intergranular stress corrosion cracking (IGSCC). Cracking can impair pipe structural integrity, thus ultrasonic inspections are carried out on a regular and scheduled basis. Once a crack has been detected during the course of an inspection, that crack must be properly sized in order to determine the integrity of the pipe section under examination. The morphology of IGSCC is radically different than that of a fatigue crack and traditional sizing methods have been shown to need substantial revision and development in order to yield satisfactory results. The EPRI has undertaken a substantial program in this regard. The goals of this program are many, among to produce techniques that yield accurate and reliable indications of size, and advance automated sizing, due to the high radiation environment that is often encountered. Several methods have been and are being researched. As part of this overall funding program the utility of low frequency ultrasonic sizing was explored. Low frequency, wide aperature ultrasound offers many advantages for sizing and the results of this research is encouraging, and when used in conjunction with other complimentary techniques can yield accurate measurements of crack size.

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Fuller MD, Avioli MJ, Rose JL. SIZING OF INTERGRANULAR STRESS CORROSION CRACKING USING LOW FREQUENCY ULTRASOUND. In Unknown Host Publication Title. Int Committee on Nondestructive Testing. 1985. p. 1480-1486