Effect of crack closure on quantitative ECT inspection of closed fatigue cracks

Zhenmao Chen, Noritaka Yusa, Kenzo Miya, Hideaki Tokuma

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

2 Citations (Scopus)

Abstract

In this paper, the feasibility to apply a closed fatigue crack as a substitute of a Stress Corrosion Crack (SCC) is investigated aiming at applications to ECT crack sizing. Several testpieces of closed fatigue cracks are fabricated, and ECT signals are measured after selected bending loads being applied to close the crack. From the measured signals, the crack profiles are reconstructed by using a deterministic inversion technique, and the sizing results are compared with the true crack profiles in order to evaluate the effect of crack closure. The results reveal that the closing load does not give significant influence on the crack sizing precision. Therefore, to simulate SCC with a fatigue crack closed by 3 point bending testing is not a suitable way from the view point of ECT inversion.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XI)
EditorsAntonello Tamburrino, Yevgen Melikhov, Zhenmao Chen, Lalita Udpa
Pages171-178
Number of pages8
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

Publication series

NameStudies in Applied Electromagnetics and Mechanics
Volume31
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322

Keywords

  • Crack Closure
  • Crack sizing
  • Eddy Current Testing
  • Fatigue crack

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Effect of crack closure on quantitative ECT inspection of closed fatigue cracks'. Together they form a unique fingerprint.

  • Cite this

    Chen, Z., Yusa, N., Miya, K., & Tokuma, H. (2008). Effect of crack closure on quantitative ECT inspection of closed fatigue cracks. In A. Tamburrino, Y. Melikhov, Z. Chen, & L. Udpa (Eds.), Electromagnetic Nondestructive Evaluation (XI) (pp. 171-178). (Studies in Applied Electromagnetics and Mechanics; Vol. 31). https://doi.org/10.3233/978-1-58603-896-0-171