Characterization of stress at a ceramic/metal joined interface by the V(z) technique of scanning acoustic microscopy

Chiaki Miyasaka, Bernhard R. Tittmann, Shun Ichiro Tanaka

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

It is well known that the process of heating and then cooling dissimilar materials introduces considerable stress at and near the interface. In this article, first, the surface wave velocity distributions obtained with the V(z) curve technique were found to compare well with residual stress distribution measured by the finely collimated X-ray diffraction technique. Second, a delamination was introduced at the interface. The V (z) curve technique was then used again to measure the surface acoustic wave velocity along the interface. The defective specimens showed significantly different patterns of surface acoustic wave velocities. Thus, this study presents useful guidelines in discriminating between sound and defective ceramic/metal joints by scanning acoustic microscopy.

Original languageEnglish (US)
Pages (from-to)336-342
Number of pages7
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume124
Issue number3
DOIs
StatePublished - Aug 1 2002

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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