Yoshikazu Ohara

Associate Professor

  • 690 Citations
  • 14 h-Index
20042020

Research output per year

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Research Output

2020

Detecting and imaging stress corrosion cracking in stainless steel, with application to inspecting storage canisters for spent nuclear fuel

Remillieux, M. C., Kaoumi, D., Ohara, Y., Stuber Geesey, M. A., Xi, L., Schoell, R., Bryan, C. R., Enos, D. G., Summa, D. A., Ulrich, T. J., Anderson, B. E. & Shayer, Z., 2020 Jan, In : NDT and E International. 109, 102180.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Toward an ultra-high resolution phased-array system for 3D ultrasonic imaging of solids

Ohara, Y., Remillieux, M. C., Onuma, T., Tsunoda, K., Tsuji, T. & Mihara, T., 2020 Sep 14, In : Applied Physics Letters. 117, 11, 0021282.

Research output: Contribution to journalArticle

2019

Fundamental wave amplitude difference imaging for detection and characterization of embedded cracks

Haupert, S., Ohara, Y., Carcreff, E. & Renaud, G., 2019 Jul, In : Ultrasonics. 96, p. 132-139 8 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Multi-mode nonlinear ultrasonic phased array for imaging closed cracks

Ohara, Y., Potter, J., Nakajima, H., Tsuji, T. & Mihara, T., 2019 Jan 1, In : Japanese journal of applied physics. 58, SG, SGGB06.

Research output: Contribution to journalArticle

4 Citations (Scopus)
3 Citations (Scopus)
2 Citations (Scopus)
2018

Dynamic acousto-elastic response of single fatigue cracks with different microstructural features: An experimental investigation

Jin, J., Rivière, J., Ohara, Y. & Shokouhi, P., 2018 Aug 21, In : Journal of Applied Physics. 124, 7, 075303.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Multi-mode nonlinear ultrasonic phased array for closed crack imaging

Ohara, Y., Potter, J., Haupert, S., Nakajima, H., Tsuji, T. & Mihara, T., 2018 Jan 1, In : Proceedings of Meetings on Acoustics. 34, 1, 055001.

Research output: Contribution to journalConference article

2 Citations (Scopus)

Subharmonic phased array for crack evaluation (SPACE)

Ohara, Y., Mihara, T. & Yamanaka, K., 2018 Jan 1, Nonlinear Ultrasonic and Vibro-Acoustical Techniques for Nondestructive Evaluation. Springer International Publishing, p. 419-469 51 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2017

Development of Hertzian contact ultrasonic probe for couplant-free concrete measurement

Tsuji, T., Ikoma, R., Ohara, Y. & Mihara, T., 2017 Oct 31, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8092936. (IEEE International Ultrasonics Symposium, IUS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Development of highly efficient piezoelectric gas composite probe for air-coupled ultrasonic testing

Tsuji, T., Kitahara, D., Tanaka, Y., Ohara, Y. & Mihara, T., 2017 Oct 31, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8092260. (IEEE International Ultrasonics Symposium, IUS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

High-selectivity imaging of closed cracks in a coarse-grained stainless steel by nonlinear ultrasonic phased array

Ohara, Y., Takahashi, K., Ino, Y., Yamanaka, K., Tsuji, T. & Mihara, T., 2017 Oct, In : NDT and E International. 91, p. 139-147 9 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Ultrasonic phased array with surface acoustic wave for imaging cracks

Ohara, Y., Oshiumi, T., Nakajima, H., Yamanaka, K., Wu, X., Uchimoto, T., Takagi, T., Tsuji, T. & Mihara, T., 2017 Jun 1, In : AIP Advances. 7, 6, 065214.

Research output: Contribution to journalArticle

10 Citations (Scopus)
2015

Closed-crack imaging and scattering behavior analysis using confocal subharmonic phased array

Sugawara, A., Jinno, K., Ohara, Y. & Yamanaka, K., 2015 Jul 1, In : Japanese journal of applied physics. 54, 7, 07HC08.

Research output: Contribution to journalArticle

26 Citations (Scopus)

Nonlinear ultrasonic phased array imaging of closed cracks using global preheating and local cooling

Ohara, Y., Takahashi, K., Ino, Y. & Yamanaka, K., 2015 Oct 28, Recent Developments in Nonlinear Acoustics: 20th International Symposium on Nonlinear Acoustics including the 2nd International Sonic Boom Forum. Sparrow, V. W., Dragna, D. & Blanc-Benon, P. (eds.). American Institute of Physics Inc., 080002. (AIP Conference Proceedings; vol. 1685).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Subharmonic phased array for crack evaluation using surface acoustic wave

Ouchi, A., Sugawara, A., Ohara, Y. & Yamanaka, K., 2015 Jul 1, In : Japanese journal of applied physics. 54, 7, 07HC05.

Research output: Contribution to journalArticle

17 Citations (Scopus)
2014

Analysis on nonlinear ultrasonic images of vertical closed cracks by damped double node model

Jinno, K., Sugawara, A., Ohara, Y. & Yamanaka, K., 2014, In : Materials Transactions. 55, 7, p. 1017-1023 7 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Dynamic acousto-elasticity in a fatigue-cracked sample

Rivière, J., Remillieux, M. C., Ohara, Y., Anderson, B. E., Haupert, S., Ulrich, T. J. & Johnson, P. A., 2014 Jun, In : Journal of Nondestructive Evaluation. 33, 2, p. 216-225 10 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Evaluation of crack closure stress by analyses of ultrasonic phased array images during global preheating and local cooling

Takahashi, K., Jinno, K., Ohara, Y. & Yamanaka, K., 2014 Jan 1, In : Japanese journal of applied physics. 53, 7 SPEC. ISSUE, 07KC20.

Research output: Contribution to journalArticle

14 Citations (Scopus)

High-selectivity ultrasonic imaging of closed cracks using global preheating and local cooling

Ohara, Y., Takahashi, K., Jinno, K. & Yamanaka, K., 2014, In : Materials Transactions. 55, 7, p. 1003-1010 8 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Optimized dynamic acousto-elasticity applied to fatigue damage and stress corrosion cracking

Haupert, S., Rivière, J., Anderson, B., Ohara, Y., Ulrich, T. J. & Johnson, P., 2014 Jun, In : Journal of Nondestructive Evaluation. 33, 2, p. 226-238 13 p.

Research output: Contribution to journalArticle

17 Citations (Scopus)
2013

High-selectivity imaging of closed cracks using elastic waves with thermal stress induced by global preheating and local cooling

Ohara, Y., Takahashi, K., Murai, S. & Yamanaka, K., 2013 Jul 15, In : Applied Physics Letters. 103, 3, 031917.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Improvement of closed crack selectivity in nonlinear ultrasonic imaging using fundamental wave amplitude difference

Ikeuchi, M., Jinno, K., Ohara, Y. & Yamanaka, K., 2013 Jul 1, In : Japanese journal of applied physics. 52, 7 PART 2, 07HC08.

Research output: Contribution to journalArticle

33 Citations (Scopus)
2012

Enhancement of selectivity in nonlinear ultrasonic imaging of closed cracks using amplitude difference phased array

Ohara, Y., Shintaku, Y., Horinouchi, S., Ikeuchi, M. & Yamanaka, K., 2012 Jul 1, In : Japanese journal of applied physics. 51, 7 PART2, 07GB18.

Research output: Contribution to journalArticle

38 Citations (Scopus)

Enhancement of the selectivity of closed cracks in nonlinear ultrasonic imaging using amplitude difference phased array

Ohara, Y., Ikeuchi, M., Jinno, K., Ouchi, A., Horinouchi, S. & Yamanaka, K., 2012 Jan 1, 2012 Proceedings of SICE Annual Conference, SICE 2012. Society of Instrument and Control Engineers (SICE), p. 1177-1180 4 p. 6318622. (Proceedings of the SICE Annual Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Evaluation of closed stress corrosion cracks in Ni-based alloy weld metal using subharmonic phased array

Horinouchi, S., Ikeuchi, M., Shintaku, Y., Ohara, Y. & Yamanaka, K., 2012 Jul 1, In : Japanese journal of applied physics. 51, 7 PART2, 07GB15.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Formation and evaluation of closed stress corrosion cracks in ni-based alloy weld metal for nuclear power plants

Ohara, Y., Shintaku, Y., Horinouchi, S. & Yamanak, K., 2012 May 1, Nonlinear Acoustics: State-of-the-Art and Perspectives, ISNA 2012 - 19th International Symposium on Nonlinear Acoustics. 1 ed. p. 183-186 4 p. (AIP Conference Proceedings; vol. 1474, no. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Two dimensional model for subharmonic generation at closed cracks with damped double nodes

Yamanaka, K., Shintaku, Y. & Ohara, Y., 2012 May 1, Nonlinear Acoustics: State-of-the-Art and Perspectives, ISNA 2012 - 19th International Symposium on Nonlinear Acoustics. 1 ed. p. 179-182 4 p. (AIP Conference Proceedings; vol. 1474, no. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
2011

Evaluation of acoustic anisotropy to image defects in weld metal by ultrasonic phased array

Shintaku, Y., Ohara, Y. & Yamanaka, K., 2011 Sep 1, In : Japanese journal of applied physics. 50, 9 PART 1, 096601.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Meandering collimated beam of surface acoustic waves on a trigonal crystal ball

Yanagisawa, T., Ohgi, T., Akao, S., Nakaso, N., Tsukahara, Y., Ohara, Y., Tsuji, T. & Yamanaka, K., 2011 Mar 21, In : Applied Physics Letters. 98, 12, 123508.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Nonlinear ultrasonic imaging method for closed cracks using subtraction of responses at different external loads

Ohara, Y., Horinouchi, S., Hashimoto, M., Shintaku, Y. & Yamanaka, K., 2011 Aug 1, In : Ultrasonics. 51, 6, p. 661-666 6 p.

Research output: Contribution to journalArticle

32 Citations (Scopus)

Two-dimensional analyses of subharmonic generation at closed cracks in nonlinear ultrasonics

Yamanaka, K., Ohara, Y., Oguma, M. & Shintaku, Y., 2011 Jul 1, In : Applied Physics Express. 4, 7, 076601.

Research output: Contribution to journalArticle

28 Citations (Scopus)

Two-dimensional analysis of subharmonic ultrasound generation at closed cracks by damped double nodes

Yamanaka, K., Shintaku, Y., Oguma, M. & Ohara, Y., 2011 Jan 1, NDT in Progress 2011 - 6th International Workshop of NDT Experts, Proceedings. Mazal, P. (ed.). Brno University of Technology, p. 327-332 6 p. (NDT in Progress 2011 - 6th International Workshop of NDT Experts, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2010

Evaluation of stress corrosion cracks in metals by linear and nonlinear ultrasound

Shintaku, Y., Ohara, Y., Hashimoto, M., Horinouchi, S. & Yamanaka, K., 2010 Dec 1, 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. p. 113-116 4 p. (20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Fundamental study on nonlinear ultrasonic imaging method for closed cracks using subtraction of responses at different external loads

Ohara, Y., Shintaku, Y., Hashimoto, M., Horinouchi, S. & Yamanaka, K., 2010 Dec 1, 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society. p. 869-873 5 p. (20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Monitoring growth of closed fatigue crack using subharmonic phased array

Ohara, Y., Endo, H., Hashimoto, M., Shintaku, Y. & Yamanaka, K., 2010 Apr 1, Review of Progress in Quantitative Nondestructive Evaluation. Vol. 1211. p. 903-909 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Ultrasonic imaging of stress corrosion crack formed in high temperature pressurized water using subharmonic phased array

Ohara, Y., Shintaku, Y., Horinouchi, S., Hashimoto, M., Yamaguchi, Y., Tagami, M. & Yamanaka, K., 2010 Dec 1, In : Proceedings of Meetings on Acoustics. 10, 045007.

Research output: Contribution to journalConference article

6 Citations (Scopus)
2009

Selectivity enhancement of subharmonic phased array for crack evaluation (SPACE)

Yamanaka, K. & Ohara, Y., 2009 May 5, In : AIP Conference Proceedings. 1096, p. 824-831 8 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Ultrasonic measurement of closed stress corrosion crack depth using subharmonic phased array

Ohara, Y., Endo, H., Mihara, T. & Yamanaka, K., 2009 Jul 1, In : Japanese journal of applied physics. 48, 7 PART 2, 07GD01.

Research output: Contribution to journalArticle

51 Citations (Scopus)
2008

Accurate measurement of closed cracks using subharmonic phased array

Ohara, Y., Yamamoto, S., Endo, H., Mihara, T. & Yamanaka, K., 2008 Aug 15, Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. p. 557-560 4 p. (AIP Conference Proceedings; vol. 1022).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Analysis of subharmonic phased array for crack evaluation (SPACE) using elastic-body-oscillator model

Yamanaka, K., Ohara, Y., Yamamoto, S. & Endo, H., 2008 Aug 15, Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. p. 577-580 4 p. (AIP Conference Proceedings; vol. 1022).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Development of nonlinear ultrasound system using PMN-PT piezoelectric crystal

Mihara, T., Ohara, Y. & Yamanaka, K., 2008 Dec 1, ASME 2008 Pressure Vessels and Piping Conference, PVP2008. p. 161-164 4 p. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; vol. 5).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Ultrasonic evaluation of closed cracks using subharmonic phased array

Ohara, Y., Yamamoto, S., Mihara, T. & Yamanaka, K., 2008 May 23, In : Japanese journal of applied physics. 47, 5 PART 2, p. 3908-3915 8 p.

Research output: Contribution to journalArticle

69 Citations (Scopus)
2007

Imaging of closed cracks using nonlinear response of elastic waves at subharmonic frequency

Ohara, Y., Mihara, T., Sasaki, R., Ogata, T., Yamamoto, S., Kishimoto, Y. & Yamanaka, K., 2007 Jan 15, In : Applied Physics Letters. 90, 1, 011902.

Research output: Contribution to journalArticle

101 Citations (Scopus)
2006

Effect of adhesion force between crack planes on subharmonic and DC responses in nonlinear ultrasound

Ohara, Y., Mihara, T. & Yamanaka, K., 2006 Feb 1, In : Ultrasonics. 44, 2, p. 194-199 6 p.

Research output: Contribution to journalArticle

74 Citations (Scopus)

Time domain analysis of subharmonic ultrasound for practical crack sizing

Yamanaka, K., Sasaki, R., Ogata, T., Ohara, Y. & Mihara, T., 2006 Mar 6, Review of Progress in Quantitative Nondestructive Evaluation: Volume 25A. p. 283-290 8 p. (AIP Conference Proceedings; vol. 820 I).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)
2004
34 Citations (Scopus)