Effects of electron beam irradiation on mist resistance and wetting were studied for soda lime glasses. The electron beam irradiation decreased the time to clear vision on the misted soda lime glasses. The treatment was conformed to show the mist resistance of the glass. To discuss the effect of electron beam on mist resistance, it was evaluated by using contact angle of sessile drop of water. Based on electron spin resonance (ESR) results, the effects of electron beam on the mist resistance were discussed. Electron beam irradiation broke the weakly bonded pairs and formed the dangling bonds in soda lime glasses.
This paper describes the safety operating system of oil film journal bearing using supply oil control system. Journal bearings are widely used for high speed rotating machinery such as turbines, pumps, and compressors because they can support the high speed rotating shaft across the oil lubricating film. However, in higher speed self-excited vibration which is called oil whip is generated and then they cause the seizure of bearing surface or breakdown of the machinery. It is, therefore, important to avoid the oil whip. Hashimoto et. al. suggested the stabilization method of the journal bearing using starved lubrication and the applicability of the method is verified theoretically and experimentally. The next step of the stabilization method is decreasing the several risks such as the contact of the bearing excess of decreasing the supply oil quantity. In this paper, we propose the safety and secure system by controlling the supply oil quantity for stabilization of the journal bearing using the starved lubrication and the effectiveness of the system is verified experimentally.
Effects of thickness ratio of Fe-Sm to (Fe-Sm)+(Fe-Tb) films of three layered Fe-Sm / Si / Fe-Tb composite on magnetostriction, bending strain and its force induced by weak magnetic field within 600 kAm-1 were investigated with the object that such composite being produced by direct current magnetron sputtering process will be used for mover device. Magnetostriction, bending strain and its force of the mover composites were in full control of film thickness ratio of [Fe-Sm] / [(Fe-Sm)+(Fe-Tb)]. The high susceptibility with low bending strain was obtained for the device with the high film thickness ratio, whereas the high bending strain with low susceptibility was gotten for the device with the low thickness ratio.