Development of new V(z) curve technique for soft materials

Chiaki Miyasaka, Koichi Komaki, Bernhard R. Tittmann

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

The present article reports a technique to characterize small portions in the order of a few micron of a soft anisotropic material. The heart muscle was selected for specimen as an example of the soft material. The heart muscle was cut by a microtome and coated on a substrate. The thickness of the specimen was substantially 3 μm. For the substrate, fused quartz was used because its elastic properties are known and stable. The spherical acoustic lens was used to determine the position for the measurement. Considering the anisotropy of the specimen, the cylindrical lens was used to measure velocities of the Rayleigh waves propagating within the specimen. The frequency of 400 MHz was used for both the visualization and the measurement. The generation of the Rayleigh waves in the above conditions was confirmed by numerical calculations based on the wave propagation theory for layered media. As a result, the variation of the velocities representing the anisotropy of elastic properties were obtained and found to be about 7%.

Original languageEnglish (US)
Pages (from-to)182-190
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3993
StatePublished - Jan 1 2000
EventNondestructive Evaluation of Aging Materials and Composites IV - Newport Beach, CA, USA
Duration: Mar 8 2000Mar 9 2000

Fingerprint

Rayleigh Waves
Rayleigh waves
Elastic Properties
Muscle
Lens
Anisotropy
Substrate
Acoustic imaging
Layered Media
Curve
Quartz
Anisotropic Material
Substrates
curves
muscles
Numerical Calculation
Wave propagation
Wave Propagation
Lenses
Acoustics

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Miyasaka, Chiaki ; Komaki, Koichi ; Tittmann, Bernhard R. / Development of new V(z) curve technique for soft materials. In: Proceedings of SPIE - The International Society for Optical Engineering. 2000 ; Vol. 3993. pp. 182-190.
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Development of new V(z) curve technique for soft materials. / Miyasaka, Chiaki; Komaki, Koichi; Tittmann, Bernhard R.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 3993, 01.01.2000, p. 182-190.

Research output: Contribution to journalConference article

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AB - The present article reports a technique to characterize small portions in the order of a few micron of a soft anisotropic material. The heart muscle was selected for specimen as an example of the soft material. The heart muscle was cut by a microtome and coated on a substrate. The thickness of the specimen was substantially 3 μm. For the substrate, fused quartz was used because its elastic properties are known and stable. The spherical acoustic lens was used to determine the position for the measurement. Considering the anisotropy of the specimen, the cylindrical lens was used to measure velocities of the Rayleigh waves propagating within the specimen. The frequency of 400 MHz was used for both the visualization and the measurement. The generation of the Rayleigh waves in the above conditions was confirmed by numerical calculations based on the wave propagation theory for layered media. As a result, the variation of the velocities representing the anisotropy of elastic properties were obtained and found to be about 7%.

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