著者

園田 泰章 川上 博士 鈴木 実平 沓名 宗春 井上 裕喜 斎藤 清隆

出版者

一般社団法人日本機械学会

雑誌

生産加工・工作機械部門講演会 : 生産と加工に関する学術講演会

巻号頁・発行日

vol.2010, no.8, pp.71-72, 2010-11-19

著者

川上 博士 鈴木 実平 藤原 正典 中嶋 純也

出版者

一般社団法人 溶接学会

雑誌

溶接学会論文集 (ISSN:02884771)

巻号頁・発行日

vol.25, no.1, pp.24-30, 2007 (Released:2006-12-25)

参考文献数

17

被引用文献数

2

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The possibility and the mechanical properties of Al/Cu dissimilar bonding with liquefaction by the reaction diffusion in air were investigated at the temperature range between the melting point of aluminum and the eutectic temperature of Al-Cu system equilibrium diagram. The surface of each specimen was prepared by a simple preprocessing with the polishing and the cleaning by acetone. The Al/Cu dissimilar joint could be obtained by this bonding process in air. The bonding pressure is an important factor for this bonding process. The increment of bonding temperature and the decrement of oxygen concentration of air also promote solid state diffusion at Al/Cu interface. All bonded specimens in this study were fractured by the brittle fracture mode like cleavage fracture. The phases observed mainly in fracture surface is θ phase. The tensile strength of specimen bonded in air is similar with that of specimen by the diffusion bonding in vacuum.

著者

小川 雄司 川上 博士 鈴木 実平 尾崎 仁志 沓名 宗春 井上 裕喜 齋藤 清隆

出版者

一般社団法人 日本機械学会

雑誌

生産加工・工作機械部門講演会 : 生産と加工に関する学術講演会

巻号頁・発行日

vol.2014, pp.265-266, 2014

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Indirect laser peening is a new laser peening technique and modifies the mechanical properties of the surface of the substrate. Metal sheet protects the substrate surface from heat affect by a plasma with laser irradiation. Because the metal sheet absorbs laser energy and reduces the peening efficiency, the features of indirect laser peening for several aluminum alloys were investigated in this study. The changes of mechanical properties by indirect laser peening were discussed by the comparison to the mechanical properties of as-received state.

著者

ヌル サイフラ ビン カマルディン 鈴木 実平 川上 博士

出版者

一般社団法人 溶接学会

雑誌

溶接学会全国大会講演概要 平成19年度秋季全国大会

巻号頁・発行日

pp.168, 2007 (Released:2007-10-23)

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アクリル板のレーザ切断溝の形状におよぼす切断速度、レンズ焦点距離の影響を検討した。次に限界切断速度におよぼす焦点距離および板厚の影響を定量的に明らかにした。カーフの入口側の幅はほぼレンズの焦点距離によって決まり、切断速度の影響は少ない。全体のカーフ形状は切断速度によって変化する。

著者

川上 博士 西河 厚志 吉村 幸治 駒田 将樹 鈴木 実平

出版者

一般社団法人 溶接学会

雑誌

溶接学会論文集 (ISSN:02884771)

巻号頁・発行日

vol.35, no.1, pp.21-28, 2017

被引用文献数

1

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The properties of rotating tool spot joining joints with different rotating tools by the combination between the shoulder diameter and the probe length were investigated in this study. The shoulder diameter of rotating tool affects the tensile strength of the joint significantly. An oversize shoulder diameter decreased the joint strength. The probe length affects more the fracture mode than the joint strength. Interface fracture mode occurred with a rotating tool of short probe length. Plug fracture occurred with a rotating tool of long probe length. Rotary motion of restricted area in the joining interface by the rotating tool was confirmed by displacements of the joining interfaces. Rankin vortex was observed on the joining interface by velocity distribution of rotary motion of joining interface. Al oxide film layers were formed spirally on upper joining interfaces