Theoretical approach to contrast mechanism for U-AFM

C. Miyasaka, Bernhard R. Tittmann, T. Adachi, A. Yamaji

Research output: Contribution to journalConference article

Abstract

When the Ultrasonic-Atomic Force Microscope (U-AFM) is used to form an image of a surface of a specimen having discontinuities, contrast of the specimen in the image is usually stronger than that of an image formed by a conventional Atomic Force Microscope (AFM). In this article, the mechanism of the contrast of the image obtained by the U-AFM was explained by theoretical analysis. A ceramic and metal jointed bar (Steel/Cu/Si3N4) was selected as a specimen for this study. The specimen was located on the surface of a disc transducer generating ultrasonic waves up to 500 KHz, and was vibrated, wherein its first resonant frequency was 133.43 kHz. Both stress and displacement of the specimen were analyzed by classical beam theory and the two-dimensional elasto-dynamic theory. Experimental U-AFM imaging analyses were also carried out to compare the results.

Original languageEnglish (US)
Pages (from-to)63-67
Number of pages5
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume450
DOIs
StatePublished - Dec 1 2002
EventThe 2002 ASME Pressure Vessels and Piping Conference: NDE Engineering Applications - Vancouver, BC, Canada
Duration: Aug 5 2002Aug 9 2002

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Microscopes
Ultrasonics
Ultrasonic waves
Transducers
Natural frequencies
Imaging techniques
Steel
Metals

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Miyasaka, C. ; Tittmann, Bernhard R. ; Adachi, T. ; Yamaji, A. / Theoretical approach to contrast mechanism for U-AFM. In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 2002 ; Vol. 450. pp. 63-67.
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Theoretical approach to contrast mechanism for U-AFM. / Miyasaka, C.; Tittmann, Bernhard R.; Adachi, T.; Yamaji, A.

In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, Vol. 450, 01.12.2002, p. 63-67.

Research output: Contribution to journalConference article

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AU - Miyasaka, C.

AU - Tittmann, Bernhard R.

AU - Adachi, T.

AU - Yamaji, A.

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AB - When the Ultrasonic-Atomic Force Microscope (U-AFM) is used to form an image of a surface of a specimen having discontinuities, contrast of the specimen in the image is usually stronger than that of an image formed by a conventional Atomic Force Microscope (AFM). In this article, the mechanism of the contrast of the image obtained by the U-AFM was explained by theoretical analysis. A ceramic and metal jointed bar (Steel/Cu/Si3N4) was selected as a specimen for this study. The specimen was located on the surface of a disc transducer generating ultrasonic waves up to 500 KHz, and was vibrated, wherein its first resonant frequency was 133.43 kHz. Both stress and displacement of the specimen were analyzed by classical beam theory and the two-dimensional elasto-dynamic theory. Experimental U-AFM imaging analyses were also carried out to compare the results.

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