The ER-Valve characteristics are evaluated by changing the intensity of the electric field and the number of electrode. The ER-Valves and pressure drop check method are considered to be applied to the fluid power industry. The ER-Valves and pressure drop check method are considered to be applied to the mechatronics system. Using the manufactured pressure control valve, a one-link manipulator with FHA(Flexible Hydraulic Actuator) is driven. As a result, it is experimentally confirmed that the pressure control valve using ER fluids is applicable to use in driving actuator.
The purposes of using cutting fluid during cutting have been colling, lubricating, chip washing and anti-corroding. However, the present manufactaring industry restricts the use of cutting fluid because cutting fluid confains poisonous substances which are harmful to the human body. Also, the optimum design oil-mist collector. Finally, the new oil mist collector was designed. In the near future, this device must be tested in the real machining center and CNC machine.
I.G.G (Inert Gas Generator), a high temperature in Cargo Tank desulfurize, exhausted and froze the gas that combined brimstone element and soot, then supply as an inert gas by blower, inside mack tank at an incombustible range and this equipment serves a bud for the explosion. Usually, the blower which suppling inactivated gas has big impeller with heavy weight for the high pressure, it causes a delay for first operation time and too much load is delivered to motor which lead to motor destruction by fire frequently. The purpose of our study is to reduce the size, weight of impeller and install it with several stage; which make an effect for reducing the first operation time. We also intend to contribute to efficient IGG blower design for how and pressure specialty through the modification of impeller diameter, blade number and case size.
Although operations of implant in dentistry are expensive, operations are increasing every year. However, when operations failed, then it would rise to serious side effects such as malocclusion, falling off, fracture, infection and others. The model(A Type Bridge, B Type Bridge, Fitness Bridge) of the set of fixture and alveolus are made by using a CAE software. Finally, we have obtained a combination bridge solution by using orthogonal array.
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