Characterization of multilayered structures by piezoelectric photoacoustic imaging

Hiroyuki Nabeta, Kazushi Yamanaka, Yoshihiko Nagata, Toshio Koda, Yoshihiko Kanemitsu, Yasuaki Masumoto

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The piezoelectric photoacoustic spectroscopy of multilayered structures was studied both theoretically and experimentally. We calculated the one-dimensional temperature moment caused by light absorption and heat diffusion. It was found that the temperature moment is able to explain the basic feature of the photoacoustic (PA) signal of bonded Cu plates including an air gap detected by a PZT transducer attached to the back surface of the plate. The phase of the PA signal at low frequencies is very sensitive to the thickness of the air gap between two Cu plates.

Original languageEnglish
Pages (from-to)289-291
Number of pages3
JournalJapanese journal of applied physics
Volume30
DOIs
Publication statusPublished - 1991 Jan

Keywords

  • Multilayered structures
  • Nondestructive evaluation
  • Photoacoustic microscopy
  • Piezoelectric transducer
  • Temperature moment

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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