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Sagisaka Y.,Industrial Research Institute of Shizuoka Prefecture | Kamiya M.,Fuji Industrial Research Institute | Matsuda M.,Shizuoka Organization for Creation of Industries | Ohta Y.,Industrial Research Institute of Shizuoka Prefecture
Journal of Laser Micro Nanoengineering | Year: 2012

A focused femtosecond laser can induce shock waves at irradiated target surface. Under some ir-radiation conditions, the shock waves are powerful enough to deform a metal target plastically. La-ser peen forming is a sheet metal forming process using this deformation. The author adopted laser peen forming with femtosecond laser as a thin-sheet-metal bending. This process is appropriate for small parts production. The forming properties of a pure aluminum sheet were investigated. Some irradiation conditions, fluence and density of irradiated pulses, were changed. Using clarified form-ing properties, some pieces of phosphor bronze and stainless steel sheets were bent in various shapes. Some of these bent shapes are difficult to achieve with conventional press forming. Simple change of processing parameters and scanning paths allowed to form various shapes. This result means that the process is suitable for multikind small lot production. Source


Tanaka S.,Fuji Industrial Research Institute | Takagi M.,Fuji Industrial Research Institute | Mano T.,Fuji Industrial Research Institute
Journal of Physics: Conference Series | Year: 2013

In order to improve the durability of aluminum die-casting molds, we applied microstructure-controlled PVD coating techniques. Single-layer and multilayer films consisting of chromium nitride (CrN) or titanium aluminum nitride (TiAlN) were prepared using an ion plating process. Structures of multilayer films were observed using transmission electron microscopy. Pin-shaped mold steel specimens coated with each of the films were soaked in the molten aluminum alloy at 953 K different periods of time, and the amount of weight loss due to erosion was evaluated. The weight losses for the multilayer CrN and TiAlN specimens were found to be less than those for the single-layer specimens. As a practical test, five specimens of core pins used in aluminum die casting of automobile parts were coated with multilayer films, and the number of maintenance operations required to remove aluminum alloy remaining on the specimen surfaces after several thousand castings was counted and compared with six control specimens (core pins treated using a commercial salt bath diffusion process). The number of maintenance operations for CrN- and TiAlN-based multilayer-coated core pins was found to be lower than for the control specimens. Source


Nakayama H.,Fuji Industrial Research Institute | Okada Y.,Fuji Industrial Research Institute | Shirai K.,Fuji Industrial Research Institute | Suzuki Y.,Fuji Industrial Research Institute | And 9 more authors.
Transactions of Japanese Society for Medical and Biological Engineering | Year: 2014

In this presentation, we propose a sensitive monitoring device for detecting a slight movement of respiration and pulse. An air cell sheet with air pressure sensor which is possible to detect a slight movement was developed. The sensor-sheet placed under various mattresses was able to detect a slight movement of respiration and pulse without physical restraint. Monitoring device equipped with the above sheet and a nurse call system was developed. The device was used in special elder nursing home. The device was placed under air mattress and was properly able to detect a slight movement of respiration and pulse, who required terminal care, without physical restraint. © 2014, Japan Soc. of Med. Electronics and Biol. Engineering. All rights reserved. Source

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