References
- Tsukioka, S., Aoki, T., Ochi, H., Shimura, T., Sawa, T., Nakamura, T. et al., 2002, Development of an Acoustic Lens for an Imaging Sonar for Autonomous Underwater Vehicle “Urashima” and Experimentation in a Water Tank, Japanese Journal of Applied Physics, Vol. 41, No. 6A, pp. 3970~3973. https://doi.org/10.1143/JJAP.41.3970
- Belcher, E., Gallagher, D., Barone, J. and Honaker, R., 2003, Acoustic Lens Camera and Underwater Display Combined to Provide Efficient and Effective Hull and Berth Inspections, Proceedings of Oceans '03 Conference, pp. 1361~1367.
- Nakamura, T., Sato, Y., Kamakura, T. and Anada, T., 2004, Sound Pressure Fields Focused Using Biconcave Acoustic Lens for Normal Incidence, Japanese Journal of Applied Physics, Vol. 43, No. 5B, pp. 3163~3168. https://doi.org/10.1143/JJAP.43.3163
- Scroggins, D., Kamgar-Parsi, B., Folds, D. and Belcher, E., 1993, 3-D Acoustic Imaging with a Thin Lens, Proceedings of Oceans '93 Conference, pp. 444~449.
- Fink, K., 1994, Computer Simulation of Pressure Fields Generated by Acoustic Lens Beamformers, MS thesis, University of Washington.
- Mori, K., Nakamura, T., Yokoyama, T. and Hasegawa, A., 2005, 3-D FDTD Analysis of Sound Field Focused by Biconcave Acoustic Lens for Normal Incidence, Japanese Journal of Applied Physsics, Vol. 44, No. 6B, pp. 4696~4701. https://doi.org/10.1143/JJAP.44.4696
- Sato, Y., Mizutani, K., Wakatsuki, N. and Nakamura, T., 2009, Design for Aplanatic Fresnel Acoustic Lens for Underwater Imaging, Japanese Journal of Applied Physics, Vol. 48, No. 7, 07GL04. https://doi.org/10.1143/JJAP.48.07GL04
- Mori, K., Ogasawara, H., Nakamura, T., Tsuchiya, T. and Endoh, N., 2011, Design and Convergence Performance Analysis of Aspherical Acoustic Lens Applied to Ambient Noise Imaging in Actual Ocean Experiment, Japanese Journal of Applied Physics, Vol. 50, 07HG09.
- Joo, Y.-S., Park, C.-G., Lee, J.-H., Kim, J.-B., and Lim, S.-H., 2011, Development of Iltrasonic Waveguide Sensor for Under-sodium Inspection in a Sodium-cooled Fast Reactor, NTD&E International, Vol. 44, No. 2, pp. 239~246.
- Joo, Y.-S., Bae, J.-H., Kim, J.-B. and Kim, J.-Y., 2013, Effects of Beryllium Coating Layer on Performance of the Ultrasonic Waveguide Sensor, Ultrasonics, Vol. 53, No. 2, pp. 387~395. https://doi.org/10.1016/j.ultras.2012.07.005
- Kinsler, L., Frey, A., Coppens, A. and Sanders, J., 2000, Fundamental of Acoustics, 4th edition, John Wiley and Sons Inc.
- Birks, A. and Green, R., 1991, Nondestructive Testing Handbook Volume 7 - Ultrasonic Testing, American Society for Nondestructive Testing.
- Belcher, E., Matsuyama, B. and Timbre, G., 2001, Object Identification with Acoustic Lenses, Proceedings of Oceans 2001 Conference, pp. 6~11.
- Belcher, E., Hanot, W. and Burch, J., 2002, Dual-frequency Identification Sonar(DIDSON), Proceedings of the 2002 International Symposium on Underwater Technology, pp. 187~192.
- Treiber, M., Kim, J.-Y., Jacobs, L. and Qu, J., 2009, Correction for Partial Reflection in Ultrasonic Attenuation Measurements Using Contact Transducers, Journal of the Acoustical Society of America, Vol. 125, No. 5, pp. 2946~2953. https://doi.org/10.1121/1.3106125
- Blackstock, D., 2000, Fundamentals of Physical Acoustics, John Wiley and Sons Inc.
- Koopmann, G., Song, L. and Fahnline, J., 1989, A Method for Computing Acoustic Fields based on the Principle of Wave Superposition, Journal of theAcoustical Society of America, Vol. 86, No. 6, pp. 2433~2438. https://doi.org/10.1121/1.398450
- Fahnline, J. and Koopmann, G., 1991, A Numerical Solution for the General Radiation Problem based on the Combined Methods of Superposition and Singular-value Decomposition, Journal of the Acoustical Society of America, Vol. 90, No. 5, pp. 2808~2819. https://doi.org/10.1121/1.401878