Depth measurement of surface-breaking cracks using point-source/point-receiver acoustic transducer

Yung Chun Lee, Shi Hoa Kuo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A newly developed point-source/point-receiver (PS/PR) acoustic transducer is used for measuring the depth of surface-breaking cracks. The transducer consists of two miniature conical PZT elements which form a transmitter/receiver pair for generating and detecting surface waves. A tone-burst measurement system operates the PS/PR transducer at a fixed frequency. When a surface-breaking crack is present in between the transmitter and receiver, the change in time-of-flight of surface wave propagation caused by the crack is measured and used to estimate the crack depth. To verify the feasibility of this method, machined slots on a carbon steel sample are tested by the PS/PR transducer for crack depth determination. Good experimental results are obtained. Future applications and improvements on the PS/PR transducer system are addressed.

Original languageEnglish
Pages (from-to)425-429
Number of pages5
JournalJournal of Mechanics
Issue number4
Publication statusPublished - 2003

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics


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