선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- In accordance with the KGS AC418 2017 (Facilities, Technology, Inspection Standards for the Manufacture of Nonmetallic Liner Composite Containers for High Pressure Gas) testing standard, the manufactured prototype was tested to evaluate the cyclic performance of the cylinder. The cylinder is to be subjected to repeated pressurization from a pressure lower than 10% of test pressure to test pressure.
- We have applied a tow preg to obtain uniform performance through a constant fiber to resin volumetric ratio. In addition, during development, we analyzed the structural strength and load distribution factor of each part according to the length of the boss, and improved the structural stability of the part by deriving a suitable boss structure for the corresponding cylinder.
- In this study, light nylon material developed for the purpose of gas shielding in the food and beverage field was applied to solve the problem of rust generation and increased cylinder weight caused by the presence of aluminum liners in the gas storage tanks used in conventional air respirators. The tow preg was applied to obtain the uniform performance based on the constant fiber to resin volumetric ratio.
- Structural analysis was performed to predict the structural performance of the developed cylinder. First, the cylinder was rotated 360 degrees about the center axis.
대상 데이터
- A prototype of the developed cylinder was manufactured and its performance was tested. The cylinder had a minimum bursting pressure of 1,100 bar, and has a good rupture mode starting at the center of the cylinder and forming a fracture profile in the longitudinal direction of the cylinder.
이론/모형
- 6, only some central angles of the whole structure were modeled, and cyclic symmetry conditions were given circumferentially to the cross section of the model due to the presence of the helical layer that has cyclic repetitions of the same shape. In order to predict accurately the orthotrophy of the filament winding structure and the local stress distribution of the cylindrical-dome part, a 20-node secondary displacement solid element provided with the commercial finite element software ABAQUS was applied[12].
- Liner for preventing leakage of gas and winding the fibers in the composite cylinder were designed using iso-tensoid dome theory. The theory originates from the assumption that the fiber content is constant if the number of fibers passing through the section is constant when the dome part is cut in the vertical direction of the meridian, as seen in Fig.
- The prototype was tested according to the KGS AC418 2017 (Facilities, Technology and Inspection Standards for the Manufacture of Nonmetallic Liner Composite Containers for High Pressure Gas) testing standard. The cylinder was pressurized by applying water pressure until the cylinder bursted at a rate of 1 MPa/s.
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