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Takashi Ueda
Session ID: A01
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Masayuki Nunobiki, Masashi Misawa, Hiroo Shizuka, Koichi Okuda
Session ID: A02
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Yuuya Iitsuka, Jiang Zhu, Tomohisa Tanaka, Yoshio Saito
Session ID: A03
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Sachiko Ogawa, Toshiki Hirogaki, Eiichi Aoyama
Session ID: A04
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Sustainable manufacturing process is required recently. We draw attention to laser hardening with a small low-powered diode laser which has potential for low environmental load. We tried to obtain enough heat irradiation and quenching speed at the same time, and performed laser hardening for carbon steel sheet with a different thickness. As a result, it was found that whole-thickness laser hardening could be yielded for 0.5 mm sheet thickness with a 40W laser.
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Jari Tapani Kolehmainen, Yasuhiro Okamoto, Hibiki Yamamoto, Akira Okad ...
Session ID: A05
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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In a fine laser cutting, the surface quality is affected by the spatter removed from the kerf. Spatter characteristics depend mainly on the laser irradiation conditions and the flow properties of the assist gas. Moreover, these flow properties are mainly affected by the pressure of gas and the choice of nozzle. However, the nozzle optimization requires measurements of material removal in the laser cutting, which are difficult to obtain due to the relatively short time window and small physical size of the cutting event. A novel computer vision method was proposed to measure the velocity distribution of spatter in the laser cutting event. Two high speed video cameras are used to obtain different views of the cutting zone. Particles in the videos are detected using a feature detector and tracked using a sequential Monte-Carlo method. The 3D trajectories of particles are reconstructed from the 2D trajectories with an unscented Kalman filter. The performance of the proposed method was discussed using computer-generated videos with synthetic ground truth, and the proposed method was applied to measure the spatter velocity distributions of actual laser cutting events. The proposed system is able to obtain measurements at a wide range of cutting parameters.
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Makoto Sasaki, Junichi Ikeno
Session ID: A07
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Ken Yamanoi, Hirofumi Hidai, Souta Matsusaka, Noboru Morita
Session ID: A08
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Haruka Tsukasaki, Jiang Zhu, Tomohisa Tanaka, Yoshio Saito
Session ID: A09
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Takeji Arai, Noritaka Asano, Masashi Oikawa
Session ID: A10
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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There are some methods to exfoliate and remove compulsorily the surface of concrete and a building stone. However, the method for obtaining certain width and depth is limited further. And since a method is outdoor work, it needs to be a movable means. Also it is desirable to be not compulsory heavy labor but non-contact, and for it to be able to operate by remote control by demolition work, especially. As one trial for that purpose, the method of laser processing is appropriate. For example, the breakwater of the coastline and huge structures which were polluted with radioactivity, they are not easy to demolish, to remove and to make land flat. When removing the surface of the concrete polluted by radioactivity, the whole big structures made by concrete may not need to be completely removed from the land. Furthermore, it may be able to use again only by removing the surface portion. And establishment of the technology is hurried.
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Masaaki Ashihara, Yuji Aoyagi
Session ID: A14
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Masato Fujii, Hirofumi Hidai, Souta Matsusaka, Noboru Morita
Session ID: A15
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Yuki Kikuchi, Tomoya Kishino, Rie Tanabe, Yoshiro Ito
Session ID: A16
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Masaki Wakabayashi, Kazuki Komiya, Kohei Fujiwara, Takeshi Kobayashi
Session ID: A17
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Yuichi Morita, Hiroki Sakashita, Ryosuke Suzuki, Rie Tanabe, Yoshiro I ...
Session ID: A19
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Tomoko Kobayakawa, Souta Matusaka, Hirofumi Hidai, Noboru Morita
Session ID: A20
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Tatsunori Furukawa, Takeshi Nakamoto
Session ID: A21
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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The purpose of this study is to develop a new surface polishing method for water-soluble single crystal. It is impossible for a water-soluble single crystal to machine by laser beam in the air because of its brittleness. Therefore, the water-soluble single crystal is irradiated by the YAG laser beam in the saturated solution. The temperature of the water solution is raised by the heat of YAG laser beam, and the crystal is dissolved in the water solution then, the surface is processed. In this study, the KDP crystal is chosen as a water-soluble single crystal because it is difficult for KDP crystal to obtain constant dimensions and surface roughness by the conventional various processing methods. In the experiments, the processed roughness of KDP crystal is measured, and it is compared with the conventional polishing method. In addition, the surface of KDP crystal is evaluated by the performance of second harmonic generation.
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Yoshiya Okabe, Takashi Hosono
Session ID: A22
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Masahiko Yoshino, Hiroki Osawa, Akinori Yamanaka
Session ID: A24
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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In this paper, a new fabrication process of an ordered nano-dot array is studied. In this process, firstly, a substrate is coated with a thin metal layer. Then, lattice grooves were fabricated on the metal layer by the Nano Plastic Forming method. Finally, the substrate is annealed to induce dewetting into a nano-dot array. Effects of process parameters, such as combination of substrate and metal, annealing conditions, on nano dot array formation are studied experimentally.
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Kenta Kondo, Yuki Mitoma, Moeto Nagai, Takahiro Kawashima, Takayuki Sh ...
Session ID: A25
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Atsushi Hada, Noboru Morita, Shigeru Yamada, Noboru Takano
Session ID: A26
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Takuto Yoshida, Yoshio Ichita, Ryuunosuke Satou, Hideo Ueno
Session ID: A27
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Hiroyuki Suzuki, Reo Kometani, Shinichi Warisawa, Sunao Ishihara
Session ID: A31
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Hiroyuki Yamamoto, Yuko Aono, Atsushi Hirata, Hitoshi Tokura
Session ID: A32
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Masaki Otani, Junichi Uchikoshi, Kentaro Tsukamoto, Toshinori Hirano, ...
Session ID: A33
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Ryota Nakabayashi, Makoto Shimoda, Keisuke Nagatou, Taiki Inoue, Syouh ...
Session ID: A34
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Shunta Shinagawa, Keisuke Nagato, Naoki Shikazono, Tetsuya Hamaguchi, ...
Session ID: A36
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Jun Shimizu, Gou Kobayashi, Takeyuki Yamamoto, Hirotaka Ojima, Teppei ...
Session ID: A37
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Improving materials surface function by introducing micro-textures is of great interest in various fields. The authors also have performed to improve the functions of photocatalytic surface by introducing the microcutting textures and confirmed an improvement in the hydrophilicity, which is one of the photocatalytic functions, because of increase in the real surface area. In this report, vibration assisted cutting is performed to fabricate more complicated surface micro-textures. As the first step, a modeling wax is cut by a sharply pointed triangular diamond tip vibrated by a fast tool servo system with micron order amplitude, and obtained cutting groove shapes are evaluated with considering the influence of tool face direction. As a result, it is found that the obtained cutting groove shapes reflect the vibration pattern with micron order amplitude regardless of the tool face direction, and the burr height around the groove shoulder by the tool edge cutting becomes much higher than that by the tool plane cutting.
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Yusuke Sano, Eiji Makino, Toshiro Ono, Kazuhiko Sasagawa, Takashi Mine ...
Session ID: A38
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Hidetsugu Ozaki, Kazuyoshi Tsuchiya, Yasutomo Uetsuji
Session ID: A39
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Yuya Akagawa, Yasutomo Uetsuji, Kazuyoshi Tsuchiya
Session ID: A43
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Recently, piezo actuator that uses a nonlead piezoelectric material to set up the inside of the body has been researched and developed. Therefore, many researchers use the additive to improve the piezoelectricity of nonlead piezoelectricity. However, nonlead piezoelectric material has low piezoelectricity compared with the one which includes lead piezoelectric materials. We considered the influence of additive by analytical method that adopts rietveld method in the former report. The influence of additive was able to be examined only by geometrical aspect according to the characteristic of the rietveld method. Therefore, we considered the influence of additive from an energy aspect in this report and adopted the additive which improves the piezoelectricity of nonlead piezoelectric materials.
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Phuc Truong Duc, Akinori Yamanaka, Masahiko Yoshino
Session ID: A44
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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This paper presents a simplified method to fabricate ordered, metal nano dot arrays by combination of nano plastic forming, coating, thermal dewetting, and transferring nano dot arrays to plastic substrates. The shape and contact angle of the dots on master substrate are the key factors for successfully transferring to plastic substrates. The effects of process parameters such as substrate material, metal deposition thickness, annealing temperature, annealing time, etc. on the formation of nano dot on master substrate and then transfer the dot to PDMS films are systematically investigated.
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Li Zhenxing, Akinori Yamanaka, Masahiko Yoshino
Session ID: A45
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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A new fabrication method of multilayer ordered nano-dot array structures with low cost is developed in this paper. First layer ordered nano-dot array is fabricated by nano plastic forming and thermal dewetting, and then it is coated with a transparent silica spacer layer. Multilayer nano-dot structures are produced by repeating gold coating, dewetting and silica coating process. Effective parameters influencing the second layer dots ordering including gold layer thickness and silica spacer layer thickness are investigated. Mechanism of second layer dots formation is also studied. It is confirmed that regular ordered 3D nano-dot array can be obtained by optimizing the thickness of silica spacer layer and gold layer.
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Zhang W.R., Nobuyuki Moronuki
Session ID: A46
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Fine particles can be self-assembled along arbitrary pattern on a substrate with the combination of dispensing suspension that contains particles and motored-stage. The particles assembled along spiral curve can be transferred to another substrate using resin coated on it. The transferred structure works as polishing tool which enables both of efficient discharge of chips due to hydrodynamic flow with rotation and constant cutting edge height because the height distribution is copied from the mirror-polished substrate for assembly. Silica particles with diameter of 1 μm were assembled and transferred. Then, the machining performance was evaluated.
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Hidekazu Hara, Sun-Moo Song, Koh-ichi Sugimoto
Session ID: A61
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Takuma Yamauchi, Shota Ikeshima, Keisuke Nagato, Tetsuya Hamaguchi, Ma ...
Session ID: A62
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Takeshi Takada, Nobuyuki Moronuki
Session ID: A63
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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The strength of composite materials is strongly affected by the wettability of fiber to the matrix material. This research aims to make clear the guideline for the improvement of the fiber wettability with plasma treatment. To make clear the effect of plasma treatment including directionality, fine droplet was put on a polypropylene (PP) single fiber using jet-type dispenser. Then the contact angle was calculated based on the captured image. The influence of plasma processing time, its directionality and cross-sectional profile of the fiber on the contact angle were made clear.
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Akira Watanabe, Tomohiro Mizoguchi, Yoshikazu Kobayashi, Kenji Shirai
Session ID: A64
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Application of Photolabile Molecule
Eita Watanabe, Shinya Ariyasu, Kengo Hanaya, Toshihiro Suzuki, Akikazu ...
Session ID: A66
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Tatsuro Sadanaga, Atsushi Hirata
Session ID: A67
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Teruhisa Hanafusa, Tomoko Hirayama, Takashi Matsuoka
Session ID: A68
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Noritaka Kawasegi, Misato Fujii, Takaaki Shimizu, Noriaki Sekiguchi, J ...
Session ID: A69
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Yuya Funaki, Akira Kakuta, Shigeru Aomura, Hiromichi Nakadate
Session ID: A73
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Tatsuro Torimoto, Moeto Nagai, Takahiro Kawashima, Takayuki Shibata
Session ID: A74
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Kiyotaka Oohara, Keita Kato, Moeto Nagai, Takayuki Shibata, Takahiro K ...
Session ID: A75
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Optimization of Probe Design and Fabrication Process
Kenji Nakamura, Tatsuya Ozawa, Syuhei Horiike, Moeto Nagai, Takahiro K ...
Session ID: A76
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Tomoya Matsugase, Kazumasa Tanaka, Takahiro Kawashima, Moeto Nagai, Ta ...
Session ID: A78
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Manabu Nishio, Nobuyuki Moronuki, Yasuhiro Tanaka, Arata Kaneko
Session ID: A79
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
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Self-assembled fine particles have wide surface area and thus can improve the sensitivity of biochemical sensors that utilizes surface reaction. This study aims to improve the sensitivity of such sensors by assembling particles on optical element. Firstly, we clarified the problems in self-assembly of silica fine particles on the optical element surface with dip-coating method. Then, the particles on optical element were modified with protein to promote antibody-antigen reaction. Then we made clear the effect of the assembly profile and the characteristic of the optics element on the sensitivity.
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Atsushi Matsui, Takahiro Kawashima, Moeto Nagai, Takayuki Shibata, Kaz ...
Session ID: A80
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Kazuki Komiya, Masaki Wakabayashi, Kouhei Fujiwara, Takeshi Kobayashi
Session ID: A81
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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Tsukasa Tamaoki, Akira Okada, Kensuke Uemura, Yoshiyuki Uno
Session ID: B03
Published: March 01, 2012
Released on J-STAGE: September 01, 2012
CONFERENCE PROCEEDINGS
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