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Enzyme Linked Immunosorbent Assay is expected as a metrology necessary for grasp of previous disease. We have developed the technology that stirs μL order droplet as impress a high voltage from the outside , so called electric field noncontact stir technology. It became possible that the processing time shorten within 30 minutes from 200 minutes by introducing E.N.S into ELISA. In this report, we describe the content of examining the best stir condition based on the observation test of the behavior of the μL order droplet under the electric field.

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In the virtual ergonomic assessments for product design using a digital hand, estimating the force of hand for grasping and manipulating the product are very effective in building criteria of the reasonable assessment. In this paper, we proposed the method to derive exerted force by building construct the musculoskeletal biomechanical model of a finger, and by solving a non-linear optimization problem on the forces of finger tendons, muscles and the joint surfaces in case of grasping the product. In addition, the derived exerted forces were verified by comparing the previous experiment of results.

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The purpose of this research work was to realize high quality dissimilar metal welding between plain steel JSC270CC and aluminum alloy A5182. First, the effects of parameters corresponding to modulated laser beam on formation of weld bead were examined. Secondly, Intermetallic compound layer was examined and samples based on the previous examination were evaluated by the tensile shear test.

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Compare with the other welding technology, the laser welding has been said the welding deformation is small. The simulation results of the actual amount of the deformation in the laser butt welding of thin metal were reported in our several former papers. However, even this little amount of the deformation is not preferable in the precise and accurate laser welding. For the establishment of a precise welding, it is necessary to be counterbalanced or decrease of the welding deformation. From these reasons, the way of reduction was tried in the several basic welding method or geometry. For a decrease in thermal deformation, the calculations were tryed to a decrease in thermal deformation by a lot of parameters like the output, the energetic density, and the processing time, etc. It was clarified that the decreasing way of thermal deformation is much complex phenomena even in basic shapes.

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In the previous report, the authors defined processing which forms molten and solidified regions on metal plates by laser to deform them as ″Melt Laser Forming.″Then, the authors reviewed molten and solidified shapes and their deformation characteristics using stainless steel sheets. It was found that this deformation showed a behavior accompanied with coupling, as does a laminated sheet with a dynamically anisotropic nature. In this report, the authors grasped vectors of thermal strains which occur in such molten and solidified regions in order to analyze deformation behaviors of melt laser forming. This provided the potential for analyzing deformed state of molten and solidified shapes.

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The purpose of this study is to develop a new removal processing for water-soluble single crystal. Water-soluble single crystal is damaged by a laser beam irradiation in the air because of the influence of thermal stress. When the temperature of the water solution is raised by the heat of YAG laser beam, the solubility of the single crystal in the water is increased. Therefore, the water-soluble single crystal is dissolved in the water solution in this method. The dissolution is utilized on this process. In this study, the KDP, NaCl and AlK(SO₄)₂12H₂O those solubility are different are chosen as a water-soluble single crystal. The surface of KDP is processed and the roughness is measured because the crystal is used for the optical element. Then it is compared the processing with NaCl and AlK(SO₄)₂12H₂O.

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It has come to be required to be able to do a shaping processing on the glass surface freely. The method of giving micro-fabrication freely to the surface of the glass is researched. However, it is difficult to process the surface polishing like a mirror even by focusing-laser beam. The laser beam is almost transmitted into the glass and is absorbed slightly. Because of difficulty of energy-concentration effectively, it cannot have normal processing conditions. The crack occurs on the glass surface. For the converted into the pseudo-thermal conduction type from the complex multi lattice absorption of laser processing by increasing the laser absorption rate on the material surface, a special surface-coating was employed. As a result, the debris was able to be removed by post-processing at the same time. It can make the absorptive thin layer of the laser beam on the surface, and can accumulate the laser energy on the surface temporarily. Post-processing of etching makes remove the debris with coating. As a result, one of the micro-fabrication technology on the glass surface by the laser was established. The result was proved by a calculation.

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Laser machining is suitable for a micro processing. But nanosecond pulsed laser beam has not been suitable for micro processing of glass due to clack formation. Borosilicate glasses introduced silver or copper were reduced in transmittance of ultraviolet wavelengths. Also these glasses were shown that clack formation and processing thresholds was decreased with laser beam which is 6 nanosecond of pulse duration and 266 nm of wavelength. And these glasses were shown that a glass introduced the copper was more decrease in transmittance of ultraviolet and processing thresholds than a glass introduced silver. Workability of borosilicate glass introduced copper was not lightly affected by energy density and annealing.

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The purpose of this work was to produce spiral shape and stent shape on SUS304 tube by fiber laser beam processing coupled with electrochemical etching. At first, the spiral shape and stent shape were cut out by fiber laser irradiation. Next, the spiral shape and stent shape were etched in electrolytic solution. In these experiments, the optimum experimental condition was decided. The spring property of spiral shape was evaluated by spring constant, and the relationship between electrochemical etching time and spring constants was investigated. As a result of FEM analysis, it was found that the proposed stent had the expansion ratio of fifty percent in radial direction.

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A machining system that can be operated at a predetermined cutting force by changing the feed rate based on cutting force signals measured by a piezoelectric type of dynamometer has been developed. And then, the basic performances of the newly developed system have been confirmed through evaluation tests. In addition, the possibility of CFRP (Carbon Fiber Reinforced Plastic) laminates drilling with the developed machining system has been investigated. As a result of the drilling tests with drills, the newly developed system can machine through-holes without significant delamination on CFRP laminates. It is confirmed that the developed machining system can optimize drilling process by controlling the feed rate based on the cutting force signals through the tests.

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This study aims to attain high accuracy and efficiency for precision micro drilling of small holes measuring under 0.1 millimeters in diameter such as those formed in a fuel injector for an automotive engine. In this study, drilling experiments were designed to investigate the effect of the centripetal action on hole position accuracy. The experimental results obtained are as follows, (1) The model of centripetal action by the tool elastic deformation is proposed. (2) The centripetal action is high at A5052 because a resistance of tool-top transfer is large. (3) The centripetal action is low when radial run-out is small.

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In this study, the method for measurement of the tool edge temperature in tapping was proposed. The tool edge temperature was measured using the two- color pyrometer with an optical fiber. In addition, the vibration caused by tool edge-work piece contact was sensed by an acceleration pickup. Experiments were performed using TiN coated HSS-spiral tap (M10×1.5). As a result, the temperature outputs from tool edges and chips were able to be distinguished. In tapping of S45C-BN at cutting speed 30 m/min, the maximum tool edge temperature is about 400 oC. The tool edge temperature was increasing with cutting aria.

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The present research aims to measure holes such as rotary shaft holes of a jet engine and a bullet train whose diameters vary at the millimeter scale in the longitudinal direction. Firstly, a measurement system is designed and developed to measure the accuracy of a hole with a meter-scale depth and diameter varying at millimeter-scale. The probe consists of a steppingmotor, worm, wormwheeland lifting bar. Secondly, measurement unit which can measure a hole with diameter varying 70 to 168 mm is made and used for experiment for performance test. Experimental results show that the measurement unit can work for measuring hole-diameter varying at millimeter-scale.

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In detail process, it is required not only to exactly define a product shape but also to assign attribute information and define the manufacturing shape. However, to assign attribute information and define the manufacturing shape needs expertise and experience. In this study, ″Function Features″ are proposed. To assign attribute information and define the manufacturing shape are realized by just only assigning a ″Function Feature″ to a portion of a design part. A basic system based on the proposed methods for injection molding and press forming was developed, and results of simple experiments confirmed the usefulness of the system and ″Function Features″.

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The purpose of the present study is to reduce data volume and shorten the machining time of machine tools, by the circular arc approximation of the point groups composing free-form curves within the required range of accuracy. With the circular arc approximation method used for reducing NC data this time, circular arc is applied to free-form curves using the least squares method within the required accuracy. As a result, the total number of point groups was reduced to about 1/6, and data volume was reduced to about 1/5. The accuracy of the circular arc approximation was verified by machining.

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The author proposes a method of generating satin-finished surface pattern over a wide area on a PC without using mass surface ruggedness data. With this method, first images of a wide area of satin-finished surface and surface irregularity data of a narrow area are prepared. Next template matching is carried out on both the images and data, and the satin-finished patterns are generated. After this, CL data of the wide area of satin-finished surface patterns is prepared, and the patterns are milled on the surface. In this study, surface accuracy was also investigated.

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