Photoacoustic microscopic imaging of surface and subsurface damages in CFRP

Kazuyuki Nakahata, Keiji Ogi, Takeshi Namita, Katsumi Ohira, Masayuki Maruyama, Tsuyoshi Shiina

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Photoacoustic imaging comprises an optical excitation within a target zone and the detection of the ultrasonic wave so created. A pulsed laser illuminates the target zone, and this illumination causes rapid thermoelastic expansion that generates a broadband high-frequency ultrasonic wave (photoacoustic wave, PA). In this paper, we report proof-of-concept experiments for nondestructive testing of laminar materials using a PA microscope. A specimen containing carbon-fiber-reinforced plastic (CFRP) was used in this experiment and involved an artificial delamination. A 532-nm-wavelength laser irradiates the top surface of the specimen, and the resulting ultrasonic waves are received by a point-focusing immersion transducer on the same side. Our system estimated the depth and dimension of the subsurface delamination accurately. By coating a light-absorbing material on the surface, the amplitude of the PA wave increased. This finding shows that the signal-noise (S/N) ratio of the scattered wave from delaminations can be improved with the surface coatings.

本文言語English
ホスト出版物のタイトル44th Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 37
編集者Dale E. Chimenti, Leonard J. Bond
出版社American Institute of Physics Inc.
ISBN(電子版)9780735416444
DOI
出版ステータスPublished - 2018 4月 20
外部発表はい
イベント44th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2017 - Provo, United States
継続期間: 2017 7月 162017 7月 21

出版物シリーズ

名前AIP Conference Proceedings
1949
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

Conference44th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2017
国/地域United States
CityProvo
Period17/7/1617/7/21

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Photoacoustic microscopic imaging of surface and subsurface damages in CFRP」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル