Nonlinear dynamics caused by incidence of ultrasonic waves into a closed crack

Tamaki Ishikawa, Soshu Hirata, Toshihiko Sugiura

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

1 Citation (Scopus)

Abstract

A nondestructive evaluation technique based on nonlinear acoustics has been recently expected as a potential method of detecting a closed crack such as a failure of joining and a fatigue crack caused by residual stress. This research investigates nonlinearity coming from collisions between two faces of a closed crack caused by incident ultrasonic waves. According to our theoretical analysis of nonlinear dynamics shown by a simple mass-spring model hitting against a sinusoidally excited base, qualitative changes in vibration of the mass occur and superharmonics or subharmonics appear, depending on parameters such as the input frequency or the initial compression between the mass and the base. Numerical analyses and experiments were also carried out, by using a model of two solid blocks in contact. Obtained results show tendency similar to that of the above theoretical result.

Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Subtitle of host publicationVolume 26
Pages1306-1311
Number of pages6
DOIs
Publication statusPublished - 2007 May 14
EventREVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION - Portland, OR, United States
Duration: 2006 Jul 302006 Aug 4

Publication series

NameAIP Conference Proceedings
Volume894
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherREVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION
CountryUnited States
CityPortland, OR
Period06/7/3006/8/4

Keywords

  • Closed crack
  • FEM
  • Nonlinear acoustics
  • UT

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

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