scholarly journals Stress Analysis of Domestic Composite LPG Cylinder Using Classical Lamination Theory (CLT)

2018 ◽  
Vol 7 (4.5) ◽  
pp. 68 ◽  
Author(s):  
CH V K N S N Moorthy ◽  
V Srinivas
Keyword(s):  
Filament Winding ◽  
Steel Cylinder ◽  
Angle Variation ◽  
Classical Lamination Theory ◽  
Reinforced Plastic ◽  
Glass Fibre Reinforced Plastic ◽  
Glass Fibre Reinforced ◽  
Lamination Theory ◽  
Tip Radius ◽  
Composite Cylinders

Conventional Steel Cylinders used for LPG cylinder for domestic applications are not manufactured in a single joint but are welded. While composite cylinders are manufactured in a single joint, Composite components cannot be welded like the steel cylinder. Composite Cylinders are winded using Filament Winding technique. Compared to Steel Cylinders, Composite Cylinders are costlier. As composite cylinders are safer than steel cylinder, composite Cylinders due to a rubber lining inside, they are 100% leak proof. If mass production of composite cylinders are done then the cost may get reduced. This paper summarizes the design and analysis of the manufacturing of Liquid petroleum gas (LPG) Cylinder using Glass Fibre Reinforced Plastic (GFRP) material. The stresses along all the directions of the ply sequence are also calculated using Classical Lamination Theory (CLT).  The fibre stresses along all the directional angles were found to be under the required stress limits. The Metallic boss Calculation & angle variation at dome is the key parameter and is carried out and determined the tip radius.  

scholarly journals Discretization Analysis of a Composite GFRP Cylinder

2018 ◽  
Vol 7 (4.5) ◽  
pp. 277 ◽  
Author(s):  
CH V K N S N Moorthy ◽  
V Srinivas
Keyword(s):  
Filament Winding ◽  
Steel Cylinder ◽  
Angle Variation ◽  
Reinforced Plastic ◽  
Liquid Petroleum Gas ◽  
Glass Fibre Reinforced Plastic ◽  
Glass Fibre Reinforced ◽  
The Cost ◽  
Tip Radius ◽  
Composite Cylinders

Conventional Steel Cylinders used for LPG cylinder for domestic applications are not manufactured in a single joint but are welded. While composite cylinders are manufactured in a single joint, Composite components cannot be welded like the steel cylinder. Composite Cylinders are winded using Filament Winding technique. Compared to Steel Cylinders, Composite Cylinders are costlier. As composite cylinders are safer than steel cylinder, composite Cylinders due to a rubber lining inside, they are 100% leak proof. If mass production of composite cylinders are done then the cost may get reduced. This paper summarizes the design and analysis of the manufacturing of Liquid petroleum gas (LPG) Cylinder using Glass Fibre Reinforced Plastic (GFRP) material. The stresses along all the directions of the ply sequence are also calculated using Classical Lamination Theory (CLT).  The fibre stresses along all the directional angles were found to be under the required stress limits. The Metallic boss Calculation & angle variation at dome is the key parameter and is carried out and determined the tip radius.  

scholarly journals Finite Element Method for the Parametric Exploration of Domestic Composite Liquid Petroleum Gas Cylinder With Steel

2019 ◽  
Vol 8 (12) ◽  
pp. 3665-3669
Keyword(s):  
Finite Element ◽  
Volumetric Strain ◽  
Filament Winding ◽  
Element Analysis ◽  
Steel Cylinder ◽  
Significant Saving ◽  
Gas Cylinder ◽  
Liquid Petroleum Gas ◽  
Glass Fibre Reinforced Plastic ◽  
Composite Cylinders

Conventional Steel Cylinders used for LPG cylinder for domestic applications are not manufactured in a single joint but are welded. While composite cylinders are manufactured in a single joint, Composite components cannot be welded like the steel cylinder. Composite Cylinders are winded using Filament Winding technique. Compared to Steel Cylinders, Composite Cylinders are costlier. Composite cylinders are safer than steel cylinder. Composite Cylinders due to a rubber lining inside, they are 100% leak proof. If mass production of composite cylinders are done then the cost may get reduced. This paper summarizes the design and analysis of the manufacturing of Liquid petroleum gas (LPG) Cylinder using Glass Fibre Reinforced Plastic (GFRP) material. Further, the stresses and deformations that may develop due to internal pressure loading on the LPG Cylinder with GFRP material are to be analysed. Hence finite element analysis is applied with ANSYS software to simulate the corresponding analysis. Then the parametric comparative analysis of the LPG Cylinder with steel and GFRP material is also carried out assuming hemispherical end dome and considering cylinder without end frames. A significant saving in the weight of the LPG Cylinder, significant increase in the deformation and volumetric strain is observed with GFRP material against steel.

scholarly journals Seawater effects on static loads and interlayer cracking performance for polyvinyl chloride foam-cored sandwich composites

2018 ◽  
Vol 10 (11) ◽  
pp. 168781401880734
Author(s):  
Jian He ◽  
Dongyuan Xie ◽  
Qichao Xue ◽  
Yangyang Zhan
Keyword(s):  
Energy Release ◽  
Polyvinyl Chloride ◽  
Glass Fibre ◽  
Critical Energy ◽  
Bending Tests ◽  
Rate Dependent ◽  
Reinforced Plastic ◽  
Glass Fibre Reinforced Plastic ◽  
Glass Fibre Reinforced ◽  
Cantilever Bending

The diffusion influence of seawater on the static and interlayer cracking properties of a polyvinyl chloride foam sandwich structure is investigated in this study. After soaking specimens in seawater for various durations, various comparison tests are performed to investigate the effects of seawater. Compression tests for H60 and H200 polyvinyl chloride foam specimens are conducted to study strength and modulus degradation, and the results show that immerging time and temperature have significant effects on polyvinyl chloride foam properties. Tensile tests for glass-fibre-reinforced plastic panels, four-point bending tests and double cantilever bending tests for polyvinyl chloride foam sandwich specimens are also performed. The results show that seawater immerging treatment has a noticeable influence on glass-fibre-reinforced plastic tensile properties and interlayer critical energy release rate values, but has almost no effect on bending properties of foam sandwich specimen. Furthermore, a rate-dependent phenomenon is observed in double cantilever bending tests, in which higher loading rate will lead to larger critical energy release values. Numerical simulation is also performed to illustrate the cracking process of double cantilever bending tests and shows a certain accuracy. The simulation also demonstrates that the viscoelasticity of foam material after immerging treatment results in the rate-dependent characterization of double cantilever bending tests.

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