Evaluation of fatigue degradation using nonlinear ultrasonics

Ikhwang Choi, Taehun Lee, Kyung Young Jhang

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

Abstract

A study on the evaluation of fatigue degradation in SUS316L material using nonlinear ultrasonics was reported. The nonlinearity of ultrasonic wave was estimated by relative nonlinear parameter defined by the ratio of fundamental and second-harmonic wave amplitude. A measurement system with contact transducers was constructed, which has a capability of reliable measurement by keeping measurement condition in consistent and reducing extra harmonics generated in the measurement system. Two types of SUS316L specimen were tested: one was a rotating bar fatigue specimen and another was a tensile fatigue specimen. Fatigue condition was high cycle fatigue. The former has cylindrical shape and was used to observe the change of nonlinear parameter while the fatigue accumulation in a specimen. The latter is a plate-shaped specimen and was used to confirm the change of nonlinear parameter in the spot where the stress concentration was occurred. Measured nonlinear parameter showed strong correlation with damage level of both fatigue tests.

Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Pages1433-1438
Number of pages6
DOIs
StatePublished - 2010 Apr 1
Event36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - Kingston, RI, United States
Duration: 2009 Jul 262009 Jul 31

Publication series

NameAIP Conference Proceedings
Volume1211
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
CountryUnited States
CityKingston, RI
Period09/07/2609/07/31

Fingerprint

ultrasonics
degradation
evaluation
harmonics
fatigue tests
stress concentration
ultrasonic radiation
transducers
nonlinearity
damage
cycles

Keywords

  • Nonlinearity parameter
  • Rotary bending fatigue
  • SUS316L
  • Tensile fatigue
  • Ultrasonic wave

Cite this

Choi, I., Lee, T., & Jhang, K. Y. (2010). Evaluation of fatigue degradation using nonlinear ultrasonics. In Review of Progress in Quantitative Nondestructive Evaluation (pp. 1433-1438). (AIP Conference Proceedings; Vol. 1211). https://doi.org/10.1063/1.3362236
Choi, Ikhwang ; Lee, Taehun ; Jhang, Kyung Young. / Evaluation of fatigue degradation using nonlinear ultrasonics. Review of Progress in Quantitative Nondestructive Evaluation. 2010. pp. 1433-1438 (AIP Conference Proceedings).
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Choi, I, Lee, T & Jhang, KY 2010, Evaluation of fatigue degradation using nonlinear ultrasonics. in Review of Progress in Quantitative Nondestructive Evaluation. AIP Conference Proceedings, vol. 1211, pp. 1433-1438, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE, Kingston, RI, United States, 09/07/26. https://doi.org/10.1063/1.3362236

Evaluation of fatigue degradation using nonlinear ultrasonics. / Choi, Ikhwang; Lee, Taehun; Jhang, Kyung Young.

Review of Progress in Quantitative Nondestructive Evaluation. 2010. p. 1433-1438 (AIP Conference Proceedings; Vol. 1211).

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

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Choi I, Lee T, Jhang KY. Evaluation of fatigue degradation using nonlinear ultrasonics. In Review of Progress in Quantitative Nondestructive Evaluation. 2010. p. 1433-1438. (AIP Conference Proceedings). https://doi.org/10.1063/1.3362236