*Genki SAITOU¹, Tianglong Zhang², Norihito Sakaguchi², Munekazu Ohno², Kiyotaka Matsuura², Masayoshi Takeuchi³, Taichi Sano³, Takuya Yamaoka³ (1. Nagoya Univ., 2. Hokkaido Univ., 3. Mitsubishi Steel MFG. Co., Ltd.)

*KAI MATSUMOTO¹, Wan-Ting Chiu², Akira Umise², Masaki Tahara², Hideki Hosoda² (1. Graduate Student, Tokyo Tech, 2. Tokyo Institute of Technology)

*Tomoya Miyakawa¹, Atsushi Miyake², Xiao Xu^3,4, Masashi Tokunaga², Toshihiro Omori³, Ryosuke Kainuma³ (1. Graduate School of Engineering, Tohoku Univ., 2. ISSP, The University of Tokyo, 3. Graduate School of Engineering, Tohoku Univ., 4. OAS, Tohoku Univ.)

*Ding　Hao Wu¹, Itta Oikawa¹, Tokujiro Yamamoto² (1. Utsunomiya University, 2. Utsunomiya University)

*Shouma GOUDA¹, Teruo BITOH² (1. 秋田県大（院生）、2. 秋田県大（教官）)

*KAITO YAMAKAWA¹, Teruyuki Ikeda², Ayako Ikeda³ (1. Grad. Sch. Sci. Eng., Ibaraki Univ., 2. Grad. Sch. Sci. Eng., Ibaraki Univ., 3. Natl.Inst.Mat.Sci.)

*Lying Yao¹, Seiji Miura², Ken-ichi Ikeda² (1. Graduate student, Graduate School of Engineering, Hokkaido University, 2. Faculty of Engineering, Hokkaido University)

*Yuki Omori¹, Hsin-Hui Huang¹, Shunsuke Kobayashi¹, Akihide Kuwabara¹ (1. Japan Fine Ceramics Center)

*Tomoya Ishitsuka¹, Chihiro Iwamoto¹, Ryotaro Horiuchi¹, Kensuke Hamada² (1. Ibaraki Univ., 2. Ultrasonic Engineering Co., Ltd.)