A novel couplant free mediator ultrasonic rayleigh wave technique for detecting surface cracks in green parts

Steven E. Owens, Eric T. Hauck, Joseph Lawrence Rose

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

4 Scopus citations


Surface cracks initiated by handling and production issues in green parts affect the final integrity of a sintered part. The subject of crack detection in green parts has been of significant interest for decades with no real solution being available until recently. Despite the abundance of applicable techniques for inspecting sintered parts, green part inspection techniques are restricted. Some promise has been recently demonstrated with visual and resonance techniques; however the success of these methods is limited. Presented here is a novel surface wave approach based on the use of a couplant free mediator. Surface wave techniques are presented as an economical and reliable alternative to current nondestructive inspection methods. Design of a test setup for analyzing the applicability of surface wave techniques to detect cracks in specific orientations in green parts is provided. Surface wave generation techniques in conjunction with design considerations of such a system will be demonstrated. Surface wave response evaluation theories, such as amplitude and Fourier analysis methods for detecting and characterizing flaws are discussed and demonstrated through physical testing of samples. Specific applications relative to the automotive and other industries are presented to demonstrate the ability of the techniques to characterize surface defects in green parts.

Original languageEnglish (US)
Title of host publication2004 SAE World Congress
StatePublished - Dec 1 2004
Event2004 SAE World Congress - Detroit, MI, United States
Duration: Mar 8 2004Mar 11 2004


Other2004 SAE World Congress
Country/TerritoryUnited States
CityDetroit, MI

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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