L. A. Ahlberg, Bernhard R. Tittmann

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Techniques are described for measurements of the radiation pattern of elastic waves scattered by a complex bulk defect. The problems addressed are sample preparation, system calibration, data acquisition, and data processing. The results are given in terms of two specific defects: a circular crack extending from a spherical void and a dual spherical void. The diameter of the crack and the separation between the two voids are approximately the same, i. e. , 1200 mu m. The results show well-defined features in the time-domain, the real and imaginary part of the Fourier spectrum and in the impulse response function which can readily be used to distinguish between these two types of defects.

Original languageEnglish (US)
Pages (from-to)842-846
Number of pages5
JournalUltrasonics Symposium Proceedings
StatePublished - Jan 1 1980
EventUnknown conference - Boston, Mass
Duration: Nov 5 1980Nov 7 1980

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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