Failure Analysis of Glass Fiber Reinforced Plastic Pipes and Crack Inlet Opening with J-Integral Criteria Under Internal Pressure

Document Type : Research Article

Authors

1 Mechanical Engineering, Guilan University, Rasht, Iran

2 Faculty of Mechanical Engineering, University of Guilan, Rasht, IRAN

Abstract

Inspection of the damage caused by glass fiber reinforced plastic tubes, which are subjected to internal pressure due to different angles that can be exposed under the creep phenomenon in the long-term, has not been sufficiently considered. Therefore, in the present research, it has been tried to simulate the fracture by Tsai-Wu, Hashin criterions and the crack inlet opening with J-integral criterion in these pipes with different layering at internal pressure using finite element method and ABAQUS. The results of this research show that the fibers under compressive and tensile stress and the resin of tube have not fractured by tensile stress, but the fracture has occurred in the resin of composite tubes that were under pressure. According to the results, the fracture index is less than one for each of ten layers, when layering angle varies from 5 [(±30) ] to 5 [(±60) ] , but the fracture index is more than one, layering decoration for 5 [(±70) ] , 5 [(±80) ] and 5 [(±90) ] of composite tubes has been fractured. However, the value of the stress intensity factor was immediately decreased for layering decoration angle of 5 [(±55) ] , but this factor has improved when layering angle increased

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References

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 5
August 2020
Pages 1179-1192

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