*Daisuke Oikawa¹, Yuji Shindo², Humihiko Gotou¹, Noda Ryu³ (1. Akita University Graduate School, 2. Akita University, 3. Akita Prefectural University institute of wood technology)

*Shion AONO¹, Daisuke OIKAWA², Humihiko GOTOU², Yukari AOKI² (1. Akita University, 2. Akita University Graduate School)

*Hisao Sugita¹ (1. National Institute of Technology(KOSEN), Hachinohe College.)

*Rukiya Handa¹, Mizuki Satomi¹, Hiroshi Onishi¹ (1. Iwate University)

*yudai sato¹, Konno Koutaro¹, Sanghun Lee¹ (1. tohokugakuin university)

*Seima Chiyooka¹, Tatuya Akiyama², Mami Kimijima², Yukari Aoki², Humihiko Gotou² (1. Akita university, 2. Akita university Graduate School)

*Akito Tabata¹, Fumio Yuse¹, Takuto Matsubayashi¹, Masahiro Matsushita¹, Tetsuo Yamaguchi¹ (1. Kobe Steel, Ltd)