The Proceedings of Conference of Kanto Branch
Online ISSN : 2424-2691
ISSN-L : 2424-2691
2000.6
Displaying 1-50 of 101 articles from this issue
  • Article type: Cover
    Pages Cover1-
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Article type: Appendix
    Pages App1-
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Article type: Appendix
    Pages App2-
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Article type: Appendix
    Pages App3-
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • [in Japanese]
    Article type: Article
    Pages A1-A8
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Article type: Appendix
    Pages App4-
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • [in Japanese]
    Article type: Article
    Pages A181-A187
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Article type: Appendix
    Pages B1-B3
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Tadahito MIZUTANI, Shigeki YASHIRO, Yoji OKABE, Nobuo TAKEDA
    Article type: Article
    Session ID: 101
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Small-diameter optical fibers (cladding: 40μm in diameter) were embedded in O°plies on the border of 90° plies in CFRP cross-ply laminates for the detection of damage in the laminates. Two methods were used for the damege detection. 0ne of the methods is the monitoring of variations of light intensity. The other method uses the reflection spectrum from small-diameter Fibre Bragg Grating(FBG) sensors. The relationship between the output signals from the optical fibers and the dameges was investigated for the two methods experimentally and theoretically.
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  • Osamu HAGA, Hiroshi ASANUMA, Shuichi NAKAZAWA
    Article type: Article
    Session ID: 102
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A method for detecting fracture of double lapped bolted joint by the embedded optical fibers was examined. It was proven that the difference between compression and shear-out fracture could be distinguished by the change of transmission loss in case of receiving a static load. When a cyclic loading was applied on the joint, multiple cracks were generated by the size of the tightening force. It was not possible that embedded optical fiber distinguished these separately. However, it was possible to detect the generation of a crack and its arrival to the position of optical fiber.
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  • Takashi YAMANE, Jae-Beom PARK, Dong-Yeul SONG, Nobuo TAKEDA
    Article type: Article
    Session ID: 103
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    This paper studies of the correlation between the mechanical damage and the change in electrical resistance for unidirectional CFRP and CFGFRP (Carbon Fiber/Glass Fiber Reinforced Plastics) composites. This study is performed using experimental and numerical methods, and the results of two methods are compared. The change of electrical resistance is measured under the conditions of simple tension and loading-unloading, and the failure process of two types of CFRP is investigated using an optical microscope. A Monte Carlo simulation is performed to predict the change in electrical resistance due to strain and damage (fracture) of carbon fibers. Through these works, it is revealed that the change of electrical resistance had a close relation with the damage process and there is a good agreement between experimental and predicted results.
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  • Atsushi Iwasaki, Akira Todoroki, Yoshinobu Shimamura, Hideo Kobayashi
    Article type: Article
    Session ID: 104
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    Structural health monitoring is a noticeable technology for aged civil structures, buildings, chemical or nuclear plants. Although it carries out various existence as the technique of supervising generating development of the damage in the structure, when diagnosing damage, a sensor is indispensable near the damage part. Therefore performing the health monitoring of large-sized structure has many problems in respect of the number of the sensors and expense. As dissolution of such a problem, the present study proposes Ethernet LAN technologies for the sensor integration technology. The present study deals monitoring of deformation of pipes using change of natural frequencies judged by the statistical tools such as Response Surface and F-Statistics.
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  • Naritoshi AOYAGI, Brian Derby
    Article type: Article
    Session ID: 105
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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  • Toshio SAKUMA, Uichi IWATA, Tatsumi INOMATA, Yasuo OCHI, Takashi MATSU ...
    Article type: Article
    Session ID: 106
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Shape memory alloy is drawn attention as the functional material from various fields, and some products have been already made practicable. However, its applications are still few because its functions are not enoush for practical use. So it is necessary to improve these functions and grasp the most suitable conditions for shape memory alloy. In this paper, thermomechanical cyclic tests for Ti-Ni-Cu shape memory alloy which have different cold working ratio(10-40%) are conducted. And the effect of the cold working ratio on the transformation temperatures and the thermomechanical cyclic behavior are discussed.
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  • Jinbing TENG, Kenkichi SATO, Susumu MACHITA
    Article type: Article
    Session ID: 107
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    A small fatigue-testing machine that can be set on the stage of an optical microscope simply has been developed to do in-situ observation. This paper introduces it from the following three aspects: (1) the concept about the development of the small fatigue-testing machine, (2) the structure and performance of the testing machine, and (3) results of the experiment showing by micrograph of the fatigue crack in metallic specimen.
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  • Hiroshi ASANUMA, Haruki KURIHARA, Genji HAKODA
    Article type: Article
    Session ID: 108
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    This paper describes development of a FRM based smart actuator embedded with optical fiber. In this study, continuous SiC fiber reinforced aluminum composite was laminated with unreinforced aluminum plate by the interphase forming/bonding method using copper insert foil. Curvature of the material changed as a function of temperature. It was clarified that the copper concentrated around the SiC fiber which was introduced by the interphase forming/bonding method contributed to the increase of curvature of the actuator. In order to detect its deformation, pre-notched optical fiber was embedded in the actuator and was successfully broken in it to form an optical loss type sensor. Using this sensor, a simple relation between curvature change and change of optical loss was successfully obtained.
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  • Toshio ISHII, Ryouzou KAYAMA, Hiroshi ASANUMA
    Article type: Article
    Session ID: 109
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    This paper describes development of multi-functional aluminum and its composite by embedding an insulated metal wire instead of embedding optical fiber. In this paper, nickel wire is used because it is easily oxidized to be electrically insulated from aluminum matrix. The NiO/Ni composite fiber obtained by surface oxidation at 1073K for 7.2ks can be embedded in aluminum matrix by hot pressing at 798K for 7.2ks under 16.4MPa without fracture. If a part of NiO is removed, temperature of this position can be measured because a thermocouple is formed. Temperatures at two different points can be measured by this method. Strain of the same material can be monitored by measuring electrical resistance of the embedded NiO/Ni fiber. Using this method, fracture of SiC reinforcement fiber can be detected as a sudden increase of the electrical resistance.
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  • Shigeyasu AMADA, Kazuhiro TSUSHIMA
    Article type: Article
    Session ID: 110/O.S.1-3
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Bamboo grown on the slanted ground cannot grow straight up. Because it is subjected to a large bending moment due to its own weight. To avoid it the bamboo must be bent toward the gravitational direction. This bent part must be reinforced in some way to support the upper portion of the bamboo, for example reinforced by the reaction wood for the most of trees. This paper presents how bamboo reacts such over loaded circumstances. Typically, the cross-section of the bamboo culm changes from circle to ellipse which is different from trees. It is concluded that the shapes of the reaction wood are closely related to the loaded bending moment.
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  • Shigeyasu AMADA, Fumikazu KUWABARA
    Article type: Article
    Session ID: 111/O.S.1-3
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    Bamboo is a typical composite and natural, functionally graded materials. Especially, the bamboo fiber plays an important role to generate a superior elastic characteristics of bamboo. The tensle tests have been applied to obtain the elastic properties of the bamboo fiber. 0n the other hand ultrasound technique is available to obtain it nondestructively. This study focuses on the measurements of its elastic property. It is concluded that using a mixed principle anisotropic elastic property of the bamboo fiber can be obtained effectively.
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  • Noriaki OKAMOTO, Noritaka HORIE
    Article type: Article
    Session ID: 112/O.S.1-3
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    A cylindrical shell due to axial load produces concertina mode or non-axisymmetric mode. 0n the potential to absorb impact energy, the former is better than the later is. The main factor to control the buckling mode of cylindrical shell is its geometrical parameter R/t. However, it is difficult to predict the buckling mode, because to control the shape imperfection and the boundary condition etc. influence it. This study aims to control the progressive buckling modes by use of the boundary conditions that constrain outward or inward deformation. In order to investigate their effect, experiment and FE analysis are carried out. Outward constraints and constrains-free produce non-axisymmetric mode, and inward constraint causes concertina mode.
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  • Noriaki OKAMOTO, Kunio SHIKASE, Tetuya GOTO, Manabu IZUMI
    Article type: Article
    Session ID: 113/O.S.1-3
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    In safety valve of pressure vessel, reverse safety rupture discs have been in use. They make use of snap-through buckling of partial spherical shell. Especially, bulging method has the advantage of simple forming in production. The buckling pressure of a partial spherical shell with a flange formed by this method is much lower than one of partial spherical shell without a flange obtained by buckling. Therefore, it is very difficult to predict it in safety rupture discs. In this study, static experiments and finite element analyses were carried out and results concluded that the residual stresses locally developed in plastic forming much the buckling pressure much lower.
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  • Noriaki OKAMOTO, Takayuki NISHIMURA, Shigeto SUZUKI, Hiroki MATSUI
    Article type: Article
    Session ID: 114
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    The final goal of this study is to produce safety structures for human friendly robots. This paper describes an experimental and FEA investigation on the wall buckling and the collapse of a skin rectangular tube due to lateral loads. A moire topography system is proposed in order to observe the web and the flange synchronously and in whole. The experimental and FEA results show that slight initial flaws as well as initial deflection of the walls affect sensitively the behaviors and the maximum load of the skin structure.
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  • Yoshiyuki YAMAGUCHI
    Article type: Article
    Session ID: 201
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    Driving device for heat transfer enhancement in a fluid layer heated from above was developed. The device was composed of a coil spring made of shape memory alloy and a closed vessel that is flexible in axial direction. It shrinks and sinks under water when it is hot, and it expands and floats on water when it is cold. Therefore, the device was named "Negative Thermal Expansion Capsular Object" shortly NTE capsule. Its performance was proved experimentally. The way to design the device is dressed and its potentiality is discussed.
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  • Junji KAMOSHIDA, Kouji ANZAI, Hiromi SAITHO, Masahiro SEKINE
    Article type: Article
    Session ID: 202
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    The exterior-heating of metal mold has been used for plastic of many thermoplastics resins as heating in processing so far. But, because the low thermal conductivities of the synthetic resin, plastic processing of the plank has been made difficult. So, this research proposed the method which made this give off heat uniformly from the internal of the material due to high frequency dielectric heating. The purpose of this research did the simulation analysis of unsteady state temperature distribution which isn't steady between the layers to process molding of the plastic resins due to high frequency dielectric heating.
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  • Masatoshi SANO, Kazuki SHIRATORI, Daisuke MIZOBUCHI
    Article type: Article
    Session ID: 203
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Experiments have been performed for a turbulent channel flow obstructed by a turbulence promoter. Flat body was used for the turbulence promoter. The length of the body, the thickness of the body and the distance between the wall and the body were changed in several steps. The total performance between the heat transfer and the pressure drop was estimated under conditions of an equal pumping power. When the comparatively thin body was installed near the heating surface, the good performance was obtained.
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  • Sadasuke ITO, Naokatsu MIURA, Yasushi TAKANO, Yasuo UCHIKAWA
    Article type: Article
    Session ID: 204
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The cooling performance of a heat pump system in which air-cooled and water-cooled condensers were arranged in a series or in parallel was studied experimentally and analytically. The capacity of the compressor was 250 W and R22 was used as the refrigerant. The COP of the heat pump with the dual heat sources arranged in a series became greater than each COP of the heat pump with a single heat source of air or water under the conditions that the temperature of each heat source at the condenser was less than the condensation temperature at the other condenser when it was used alone in the heat pump. Under these conditions, the predicted results agreed well with the experimental results.
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  • Seigo SAKAI, Sadao FUJII, Nobuyuki TAKAHASHI, Tokuhiro NAKABAYASHI, Mi ...
    Article type: Article
    Session ID: 205
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    One of the most urgent problems to be solved in laser material processing is to develop appropriate technique to control laser welding in order to establish the laser welding as the most reliable process and to extend its applications widely. Therefore, it is strongly desirable to develop simulation technique that can predict appropriate welding conditions and stability of welding phenomenon, as well as construct physical models based on accurate monitoring. The laser welding contains many complicated phenomena, such as reflection and absorption of laser light on a material surface, phase transition, and so on. 3-dimensional unified simulation scheme for the laser welding was improved, that is based on conservative equations of multi-phase and multi-component fluids. Thermal-hydraulic phenomena of molten pool and keyhole were solved numerically. Multiple reflection of the laser light on the keyhole surface was treated by ray-tracing method. In the present study, we discuss outline of the mathematical model and its availability.
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  • Sachiyo HORIKI, Tsugue ITO, Masahiro OSAKABE, Toshiaki AMANO
    Article type: Article
    Session ID: 206
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
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    Usually, Trichloroethane has been used for the de-oiling and the cleaning of machine parts. But its production and import have been prohibited since 1995 because of its possibility to destroy the ozone layer. Generally for biological and environmental safety, the de-oiling should be done with the physical method instead of the chemical method. As one of the physical method, a cleaning by a steam flow in a packed bed of machine parts was proposed. In the previous study, the saturated or superheated steam of 150〜270℃ was used.The steam of high pressure and high temperature successfully removed the oil on the machine parts in a few minutes. In the present study, the lowpressure flashing flow was applied to the packed bed of machine parts. The temperature and pressure of the flashing flow were less than 100℃ and atmospheric pressure, respectively.
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  • Ryo KUBO, Yutaka WATANABE, Kohei TARUTANI, Yuzuru EGUCHI, Yuzuru YOSHI ...
    Article type: Article
    Session ID: 207
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Deep sea water, which is abbreviated as DSW, is defined as the seawater in the depth where photosynthesis does not occur. DSW is characterized by its cleanness, nutritiousness and low temperature in small variations in all seasons. Rationalization of DSW utilization provides possibilities of DSW business expansion, moreover energy saving. Since the low-temperature stability of DSW produces large economical merits, the development of the efficient energy utilization system is required. This project to investigate the system has been described focusing on the power plant condenser. By utilizing DSW as the cooling water in the plant circulation systems, the temperature at which heat is rejected from the cycle becomes lower. Therefore, improvement in thermal efficiency is anticipated. Since DSW prevents sea living things, such as shellfish, from clinging to each component of the system by its cleanness, easy maintenance and curtailment of auxiliary facilities are anticipated. Besides, DSW is considered as raw materials of pure water manufactures.
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  • Hidetoshi OHKUBO
    Article type: Article
    Session ID: 208
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Ethanol water solution is a very important and common substance, but there are so few data available at present for describing the behaviour of the ethanol water solution at low temperatures. Ethanol water solution is important in that it has the potential to succeed as a coolant or thermal energy storage substance because it satisfies the following requirements : it is fluidic at low temperatures and it provides a balance between the nature and environment. These features have made the ethanol solution attractive for the purposes such as : utilizing low-temperature energy of LNG, rapid cooling of food-stuffs and use as a natural coolant. As the ethanol solution is a binary solution, it also can have a solid-liquid phase. The author has proposed this solid-liquid phase be used as a thermal energy storage substance because it has a superior fluidity.
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  • Yasuo HATTORI, Toshihiro TSUJI, Yasutaka NAGANO, Nobukazu TANAKA
    Article type: Article
    Session ID: 209
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    To establish the method for evaluating the heat removal capability in a dry storage facility of nuclear spent fuel, fluid flow and heat transfer characteristics in a turbulent combined-convection boundary layer have been investigated experimentally. Instantaneous velocity and temperature in the boundary layer was measured with normal hot and cold wires, and it was revealed that with increasing in freestream velocity, the turbulent combined-convection flow suddenly changes to laminar one. With transition, a reduction in heat transfer rate and an increase in wall shear stress was observed. In addition, the guideline indicating the occurrence of a laminarization of boundary layer was proposed: Grx/Rex≃3×10^6
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  • Ikuya HAZE, Daiju MOTOYA, Masahiro OSAKABE
    Article type: Article
    Session ID: 210
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A series of experiments on the nucleate pool boiling was performed by the use of platinum wires with scale. The heat resistance of scale was measured by the forced convection method. As a result of the experiments, the more vigorous bubbling on the scale platinum wire surface was observed compared to that on the bare platinum wire surface at the same heat flux, the boiling curve on the scale surface shifted to the right side of that on the bare suface and the boiling curve corrected with the heat resistance of scale approached that on the bare surface at the high heat flux region. The scale surface didn't enhance the boiling heat transfer though the bubbling was more vigorous than that on the bare surface.
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  • Hiroyasu OHTAKE, Kun LIU, Yasuo KOIZUMI
    Article type: Article
    Session ID: 211
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The establishment of high heat removable technology is required in future industrial field. In this study, as a proposal of the high heat removable technology, the enhancement of a critical heat flux -CHF- in pool boiling was investigated by supplying liquid- jets to the heating surface. The effect of distances between liquid-jets on the enhancement of CHF was examined focusing on flow pattern near the heating surface in the present report. Experiments were conducted using a pure copper block and saturated water for pool boiling at atmospheric condition. The distances between the jet-nozzles and the test section were 1, 6 and 15 mm. The adopted inner-diameter of the jet-nozzles was 0.9 or 0.51 mm. The number of the jet-nozzles were one, two and three : the distances between the supplying liquid-jets were infinity, 30 and 15 mm, respectively. The enhancement rate of the critical heat flux related to the flow rate of liquid-jets. These results suggested that the enhancement of critical heat flux was affected additional supplied liquid quantity to the macrolayer on the heating surface.
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  • Shoichi ZENSAI, Koichi SUZUKI, Hiroshi KAWAMURA
    Article type: Article
    Session ID: 212
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Microgravity experiment on subcooled pool boiling of water was performed by using a thin stainless steel plate for heating surface. No coalesced bubbles were observed to detach from the heating surface under the microgravity. 0n the ground experiment, a flat plate was placed on the heating surface with small clearance to simulate the attached boiling bubbles on the heating surface. Burnout heat flux was measured with respect to the heating duration and an effect of surface roughness on burnout heat flux was investigated under the normal gravity. The burnout heat flux decreased gradually over the microgravity duration and became constant. The rough heating surface was observed to accelerate the bubble growth and give the higher burnout heat flux.
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  • Terumi INAGAKI, Toshinobu KANEKO, Yasuaki SHIINA
    Article type: Article
    Session ID: 213
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    As the infrared thermography has a convenient feature that we can diagnose two-dimensional temperature fields nondestructively and simultaneously at every picture element, it has widely been applied to various engineering applications. Therefore, in this paper, the surface temperature field occurred on Benard-cell convection was visualized and measured by sensing energy emitted from the liquid-gas interface directly as electromagnetic waves using the infrared thermography. The heat transfer phenomena having free surface was also discussed by analyzing the temperature data statistically. Another aim is to confirm the applicability of infrared thermography to quantitative heat transfer measurement on a liquid-gas interface.
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  • Takehiro YASUDA, Fumito KAMINAGA, Kunihito MATUMURA
    Article type: Article
    Session ID: 214
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The countercurrent flow limiting, CCFL, is experimentally studied in an air-water two-phase flow channel with three different diameter sizes, 16, 26, and 36mm. Measurements are made for liquid and gas flow rates, time variations of gas pressures and liquid film thickness near the upper entry. A bubble detachment frequency is obtained using power spectrum from the pressure fluctuation. The measurement shows that liquid can enter the tube from an upper entry with two types.
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  • Masahiro YOSHIWARA
    Article type: Article
    Session ID: 215
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Pool boiling heat transfer from a horizontal cylinder to the distilled water is experimentally studied under the atmospheric pressure condition. The horizontal cylinder is made of platinum. The horizontal cylinder is heated by a D.C. electric power source. Critical heat flux on the subcooled boiling are obtained by electric power source for the horizontal cylinder. Vaper bubbles on the horizontal cylinder are photographed with a single reflex camera by a flash. Under subcooled boiling conditions, the following phenomena are observed: many small vaper bubbles are observed on the surface of the horizontal cylinder.
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  • Kazuaki TSUJIOKA, Yuichi SATO, Mitsuhiro YOSHIDA, Keiichi KATAYAMA
    Article type: Article
    Session ID: 301
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper describes a feasibility study on vibration suppression by attaching two rotating circular plates to a vibration body, which has a long period of vibration. The totional vibration of the container that suspended by the crane occurs because of the unbalanced cargoes and wind. And it is long time to decay the vibration because of very small damping. The effects of angular velocities of rotating plates to the vibrating body on vibration suppression are examined. Accordingly, it is clarified experimentally that vibration is quickly suppressed by using the rotating plates.
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  • Kiyoshi TAKAGI, Hidekazu NISHIMURA, Yuko UCHIDA
    Article type: Article
    Session ID: 302
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper deals with control of a crane mounted on a tower-like flexible structure called the 'Tower crane' by using no sensor for the load-rope angle, since it is difficult to put the sensor on a real tower crane. We design the two-degree-of-freedom control system using not only a feedback loop but also a feedforward loop by the final-state control method with error learning. By simulations and experiments it is verified that the 2DOF controller designed can improve the settling performance that is decreased by the feedback controller without the load-rope angle sensor.
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  • Yoshihiko TAKAHASHI, Makoto YASHIGE
    Article type: Article
    Session ID: 303
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A robotic hand can capture small objects used in a house is proposed. A human I/F using a laser pointing system was developed so as to ease the operational difficulties.
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  • Tetsuo NOGUCHI, Tsutomu EZUMI, Susumu TAKAHASHI
    Article type: Article
    Session ID: 315
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    It was not permited "It coexists G54〜G59 with G92 in a numerical control program". But, It is permited by this study, just now. This method necessitates not user-macro, and It is least memory. And this study discovers relations between coolant system and cutting chips. It a avoids traps of coolant. Maximum coolant system bear in this paper at the moment.
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  • Yoshihiko Takahashi, Jun Kishi, Tsuyoshi Takagaki, Yohei Ishii
    Article type: Article
    Session ID: 304
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The starting experiments of the inverse pendulum control of the power assist wheel chair robot are described in this paper. The back and forward scheme is proposed, and the validity was confirmed by the experiments.
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  • Yoshihio Takahashi, Yohei Ishii, Tsuyoshi Takagaki, Jun Kishi
    Article type: Article
    Session ID: 305
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The inverse pendulum control of the power assist wheel chair robot is studied by using the computer simulation. This paper clarified that the response of the H_2 control converged faster than that of the PI control.
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  • Katsushi UCHIKADO, Mitsukuni MIZUNO, Hideo FURUZAWA, Kenichi USHIKI, A ...
    Article type: Article
    Session ID: 306
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    An artificial thighbone was fabricated by injection molding of mixed powders of hydroxyapatite suiting human body and pure titanium, followed by sintering the injected mold. Crystalline hydroxyapatite is a component which can rapidly bind with cells of human thighbone. The ability in the formation of apatite layer surrounding the apatite nucleation in simulated body fluid was investigated for various combinations of the ratio of titanium powders to hydroxyapatite powders.
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  • Hideyuki Takahashi, Yoshihiko Takahashi
    Article type: Article
    Session ID: 307
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The modeling and control of the nano-robotics are described. The positioning control accuracy of 50 [nm] was confirmed experimentally using PI control. The integral action of the H_2 control was investigated by using the computer simulation.
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  • Hidekazu NISHIMURA, Kazuyuki KIMISHIMA
    Article type: Article
    Session ID: 308
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In order to evaluate performances of an engine that is developed, there is a way that a certain vehicle model is virtually performed by using a low-inertia dynamo. This paper shows the vehicle model simulated in SIMULINK and the construction that the low-inertia dynamo generates the torque according to the simulation. We use a hydrodamper with strong nonlinear property to connect the engine and the low-inertia dynamo. By applying H_∞ theory and μ-synthesis we design the controller for the plant with a minor loop of the shaft torque. It is verified that the robust controller designed is effective for the engine test bed by simulations and experiments.
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  • Naoya HASEGAWA, Yoshihiko TAKAHASHI, Go MANABE, Katsumi TAKAHASHI, Tak ...
    Article type: Article
    Session ID: 309
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A food eating assist robot that can be controlled by a human I/F using CRT display is proposed. This paper describes a mechanism, a control system and the experimental results of a GSR sensor.
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  • Yasuhiko KIKUCHI, Yoshihiko TAKAHASHI
    Article type: Article
    Session ID: 310
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    An arm type movable table with a human I/F is proposed. The human I/F is specially designed using strain gages, and a user can move the table by small finger effort. The table is using a parallel link arm to move in the radial direction. After fabricating the model of the parallel link arm, the mechanical characteristics of the arm are cleared by using the computer simulations and the experiments.
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  • Hidekazu NISHIMURA, Naoki OIE, Masato HIGUMA
    Article type: Article
    Session ID: 311
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper proposes a design method for vibration isolaton control of a structure with a semiactive damper. We formulated the liner parameter varying system taking acount of constraints, valve stroke of a semi-active damper and the damping cofficient restriction, using nonlinear functions. The gain-scheduled control based on the linear matrix inequalities is obtained so that the closed-loop system is stable and has good performance. By simulations it is verified that the semi-active damper system designed is useful for non-stationary random inputs such as earthquakes.
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  • Takeshi MIZUNO, Makoto MURAYAMA, Toshiro HIGUCHI
    Article type: Article
    Session ID: 312
    Published: March 10, 2000
    Released on J-STAGE: June 19, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    An active vibration isolation system is proposed which is characterized by using an active dynamic vibration absorber as a servo accelerometer in a low-frequency range and as a vibration control device in a high-frequency range. The basic concepts of the proposed system are presented. The configuration of a control system for it is also described.
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