Ultrasonic attenuation peak during fatigue of polycrystalline copper M Hirao, H Ogi, N Suzuki, T Ohtani
Acta Materialia 48 (2), 517-524, 2000
134 2000 Line-focusing electromagnetic acoustic transducers for the detection of slit defects H Ogi, M Hirao, T Ohtani
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 46 …, 1999
98 1999 Line-focusing of ultrasonic H Ogi, M Hirao, T Ohtani
The Journal of the Acoustical Society of America 103 (5), 2411-2415, 1998
76 1998 Ultrasonic attenuation monitoring of fatigue damage in low carbon steels with electromagnetic acoustic resonance (EMAR) T Ohtani, H Ogi, Y Minami, M Hirao
Journal of Alloys and Compounds 310 (1-2), 440-444, 2000
66 2000 Rotation supporting device of a polygon mirror N Osada, Y Hisabe, T Ohtani, T Kanamori
US Patent 4,984,881, 1991
52 1991 Gas dynamic bearing for spindle motor Y Hisabe, N Osada, T Ohtani, M Kishi, Y Sato, D Konno, S Miwa, ...
US Patent 4,998,033, 1991
49 1991 Acoustic damping characterization and microstructure evolution in nickel-based superalloy during creep T Ohtani, H Ogi, M Hirao
International Journal of Solids and structures 42 (9-10), 2911-2928, 2005
42 2005 Evolution of microstructure and acoustic damping during creep of a Cr–Mo–V ferritic steel T Ohtani, H Ogi, M Hirao
Acta materialia 54 (10), 2705-2713, 2006
41 2006 Electromagnetic acoustic resonance to assess creep damage in Cr–Mo–V steel T Ohtani, H Ogi, M Hirao
Japanese journal of applied physics 45 (5S), 4526, 2006
41 2006 Round robin crystal orientation measurement using EBSD for damage assessment M Kamaya, K Kubushiro, Y Sakakibara, S Suzuki, H Morita, R Yoda, ...
Mechanical Engineering Journal 3 (3), 16-00077-16-00077, 2016
40 2016 Noncontact evaluation of surface-wave nonlinearity for creep damage in Cr–Mo–V Steel T Ohtani, H Ogi, M Hirao
Japanese Journal of Applied Physics 48 (7S), 07GD02, 2009
40 2009 Ultrasonic attenuation and microstructural evolution throughout tension–compression fatigue of a low-carbon steel T Ohtani, K Nishiyama, S Yoshikawa, H Ogi, M Hirao
Materials Science and Engineering: A 442 (1-2), 466-470, 2006
39 2006 Nonlinear acoustic evaluation of creep damage in boiler heat exchange tubes T Ohtani, K Kawashima, M Drew, P Guagliard
Japanese Journal of Applied Physics 46 (7S), 4577, 2007
30 2007 Electromagnetic acoustic transducer EMAT and inspection system with EMAR T Ohtani, H Ogi, M Hirao
US Patent 6,109,108, 2000
25 2000 Flaw detection by line-focusing electromagnetic acoustic transducers H Ogi, M Hirao, T Ohtani
1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat …, 1997
25 1997 Electromagnetic acoustic transducer EMAT and inspection system with EMAR T Ohtani, H Ogi, M Hirao
US Patent 5,811,682, 1998
23 1998 Creep strain analysis of austenitic stainless steel by SEM/EBSD K Kubushiro, Y Sakakibara, T Ohtani
Journal of the Society of Materials Science, Japan 64 (2), 106-112, 2015
22 2015 Creep-induced microstructural changes and acoustic characterization in a Cr–Mo–V Steel T Ohtani, F Yin, Y Kamada
Japanese journal of applied physics 47 (5S), 3916, 2008
21 2008 Dislocation damping and microstructural evolutions during creep of 2.25 Cr-1Mo steels T Ohtani, H Ogi, M Hirao
Metallurgical and Materials Transactions A 36, 411-420, 2005
21 2005 Change of ultrasonic attenuation and microstructure evolution in crept 2.25%-1% Mo Steels T Ohtani
Journal of Society of Materials Science, Japan 51, 195-201, 2002
20 2002 