Experimental Study on Long-Term Ring Deflection of Glass Fiber-Reinforced Polymer Mortar Pipe

Kim, Sun Hee; Yoon, Soon-Jong; Choi, Wonchang

doi:10.1155/2019/6937540

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…Following the current global trend, GRP stand as a suitable and most effective replacement for the ductile iron pipes and PVC pipes based on it material properties especially on the corrosion and erosion resistance [6]. although considerable work has been done on the dynamic stability of pipes and its related researches; but that relating to the GRP has not been completely explored [6,16,[21][22][23][24][25][26][27][28][29][30]. Nimish et al [5] studied the stress analysis of Glass Reinforced Polymer (GRP) pipes.…”

Section: Introductionmentioning

confidence: 99%

“…More light is shed on the phenomena of steady internal fluid flow exacerbating the vibration of pipelines and piping systems. Sun-Hee et al [27] performed in situ tests for 664 days to measure deflections of buried GRP pipe with a large diameter of 2,400 mm. Based on the field test result, finite element analysis was conducted to determine the pipe deflections with respect to the soil conditions and buried depth as variables.…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Analysis ofDynamic Stability of Glass Reinforced Plastic Pipes Subjected to Fluid Flow

Obuh¹,

Sylvester²,

Edelugo³

et al. 2022

IJASRE

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In the past, almost every industry worldwide patronizediron and its alloys for every major industrial design, construction and other forms of work. However, with the advent of the Glass Reinforced Plastic (GRP)as accepted in the United Kingdom or the Fibre Reinforced Plastic as accepted in the United States, which was discovered in the nineteen thirty’s (1930’s), the Glass Reinforced Plastic (GRP) has become very versatile as it has become a household name in most industries globally .It has attained this height through the significant properties it possesses, which include its ability to transform into moulds of difficult and delicate shapes and sizes which iron and its alloy may not find easy to submit to. It brings a host of otherbenefits in the form of long term performance and reliability, ease of installation and the ability to withstand corrosion and tuberculation. A service life of more than thrice that of the ductile iron pipes to mention but a few. Ductile Iron pipes are used in most petrochemical industries where pipeline plays a very important role in transporting crude oil and gas. As the service duration increases, the pipe lines are affected by corrosion mechanism which can lead to fatal accident. Corrosion can occur atboth the internal and external surface of the pipelines. In general, corrosion would cause metal loss which leads to reduction in pipeline thickness and consequently reduce its strength. Itbecomes necessary that the stability of the Glass Reinforced Plastic (GRP) pipes are carefully investigated especially in the event of high pressure turbulent flows. This is the thrust of this work. In the light of the above, ductileiron pipes and Glass Reinforced Plastics (GRP) pipes of the same thicknesses were investigated, some special characteristics such as the bursting pressures were calculated using Peter Barlow’s formula. The ANSYS software was also used for modelanalysisand compare the stress profile under dynamic condition for both pipes. Also the cost of production of pipes, classification and the difficulties encountered during their installation processes wereexamined. The result indicated an overwhelming encouragement to use Glass Reinforced Plastic (GRP) pipes as substitutes to the traditional ductile iron and its alloys in view of the fact that Glass Reinforced Plastic (GRP) pipes withstand corrosion and tuberculation while saving the huge cost that would have been used forpigging

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling and Analysis ofDynamic Stability of Glass Reinforced Plastic Pipes Subjected to Fluid Flow

Obuh¹,

Sylvester²,

Edelugo³

et al. 2022

IJASRE

View full text Add to dashboard Cite

show abstract

Enhancement of the Spangler model and calculation method for the assessment of structural characteristics in buried flexible pipes: Theoretical and numerical analysis

Yu,

Shi,

et al. 2024

Structures

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Long-term ring stiffness of fiberglass-reinforced plastic mortar pipes

Sun¹,

Lv²,

Chen³

et al. 2021

Materials Testing

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Fiberglass-reinforced plastic mortar (FRPM) pipes are lightweight, high-strength, and corrosion resistant. Owing to several additional advantages including the ability to convey large flows, convenient installation, and low overall costs, FRPM pipes are well-suited to various pipeline systems in the chemical, water, and drainage industries. As a polymer matrix composite material, the mechanical properties of FRPM pipes are time-dependent. Ring stiffness measures the ability of a pipe to resist deformation under an external load and decreases with increasing service time. Reduced ring stiffness can lead to excessive deformation, which can affect the long-term durability of the pipeline, eventually resulting in failure. At present, only few studies have been conducted on long-term ring stiffness of FRPM pipelines, which has hindered their application. In this study, long-term ring stiffness of 500 mm diameter pipes comprised of FRPM was tested under two different loading conditions: constant load and constant displacement. Variation of ring stiffness with time under constant load and constant displacement conditions was obtained and the predicted attenuation of ring stiffness after 50 years was found to be 11.62 % and 15.48 %, respectively, which further confirms the reliability of long-term ring stiffness predictions based on short-term test data. And the results will contribute to further studies on the longterm ring stiffness of FRPM pipes.

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Experimental Study on Long-Term Ring Deflection of Glass Fiber-Reinforced Polymer Mortar Pipe

Cited by 6 publications

References 11 publications

Modelling and Analysis ofDynamic Stability of Glass Reinforced Plastic Pipes Subjected to Fluid Flow

Modelling and Analysis ofDynamic Stability of Glass Reinforced Plastic Pipes Subjected to Fluid Flow

Enhancement of the Spangler model and calculation method for the assessment of structural characteristics in buried flexible pipes: Theoretical and numerical analysis

Long-term ring stiffness of fiberglass-reinforced plastic mortar pipes

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