Metal inserts for performance improvement in glass fiber‐reinforced polymer nanocomposite joints under accelerated aging conditions

2021 ◽  
Author(s):  
Kulwinder Singh ◽  
Mohit Kumar ◽  
Jaswinder Singh Saini
Keyword(s):  
Glass Fiber ◽  
Performance Improvement ◽  
Accelerated Aging ◽  
Polymer Nanocomposite ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Aging Conditions

Feasibility of Using Glass-Fiber-Reinforced Polymer Pipelines for Hydrogen Delivery

2016 ◽  
Author(s):  
D. Barton Smith ◽  
Barbara J. Frame ◽  
Lawrence M. Anovitz ◽  
Christopher Makselon
Keyword(s):  
Elevated Temperature ◽  
Glass Fiber ◽  
Aging Process ◽  
Accelerated Aging ◽  
Fiber Reinforced Polymer ◽  
Leak Rate ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

Pipelines are a practicable means for delivering large quantities of gaseous hydrogen over long distances and for distributing it as a transportation fuel at fueling stations in urban and rural settings. Glass-fiber-reinforced polymer (GFRP) pipelines are a promising alternative to the present-day use of low-alloy steel in pipelines for hydrogen transmission. GFRP pipelines offer advantages of lower capital cost and improved lifecycle performance, compared to steel pipelines. The technical challenges for adapting GRFP pipeline technology from oil and natural gas transmission, where it is in extensive service worldwide, to hydrogen transmission consists of evaluating the hydrogen compatibility of the constituent materials and composite construction, identifying the advantages and challenges of the various manufacturing methods, testing polymeric liners and pipelines to determine hydrogen permeability and leak rates, selecting options for pipeline joining technologies, establishing the necessary modifications to existing codes and standards to validate the safe and reliable implementation of the pipeline. We performed examined the technical feasibility of using a commercially available spoolable glass-fiber-reinforced polymer (GFRP) pipeline for hydrogen transmission. We used an accelerated aging process based on the Arrhenius model to screen for hydrogen-induced damage in the pipeline and in the pipeline’s constituent materials. We also measured hydrogen leakage rates in short lengths of the pipeline. The accelerated aging process involved immersing GRFP pipeline specimens in pipeline-pressure hydrogen (6.9 MPa/1000 psi) at an elevated temperature (60°C) to promote an accelerated interaction of hydrogen with the pipeline structure. To assess specific effects on the constituent materials in the pipeline, specimens of fiberglass rovings, resin matrix and liner materials were immersed together with the pipeline specimens, and specimens of all types were subjected to either a one-month or an eight-month exposure to hydrogen at the elevated temperature. At the conclusion of each exposure interval the pipeline specimens were evaluated for degradation using hydrostatic burst pressure tests to assess the overall integrity of the structure, compression tests to assess the integrity of the polymer matrix, and bend testing to assess the integrity of the laminate. The results of these tests were compared to the results obtained from identical tests performed on un-conditioned specimens from the same manufacturing run. Tensile tests and dynamic mechanical analysis were performed on multiple specimens of constituent materials. We measured the hydrogen leak rate in GFRP pipeline lined with pipeline-grade high-density polyethylene (PE-3408). The thickness of the liner was 0.526 cm and its inside diameter was 10.1 cm. The hydrogen pressurization during the leak rate measurements was 10.3 MPa (1500 psia) — the maximum recommended pressure — and all measurements were done at ambient temperatures in an air-conditioned laboratory. The pipeline was closed on each end using a steel cap with elastomer (O-ring) seals. The leak rate was calculated from the temperature-compensated pressure decay curve. Changes in pipeline volume that occurred due to pressure-induced dimensional changes in the pipeline length and circumference were measured using strain gauge sensors. These volumetric changes occurred at the earliest measurement times and diminished to near zero at the long measurement times during which the steady-state leak rate was determined. Leak rate measurements in three different lengths of pipeline yielded a leak rate was significantly lower than the predicted rate from the standard analytical model for a cylindrical vessel.

scholarly journals Investigation into the Effect of Cutting Conditions in Turning on the Surface Properties of Filament Winding GFRP Pipe Rings

Machines ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 16
Author(s):  
Gabriel Mansour ◽  
Panagiotis Kyratsis ◽  
Apostolos Korlos ◽  
Dimitrios Tzetzis
Keyword(s):  
Surface Roughness ◽  
Glass Fiber ◽  
Process Parameters ◽  
Filament Winding ◽  
Numerical Control ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

There are numerous engineering applications where Glass Fiber Reinforced Polymer (GFRP) composite tubes are utilized, such as desalination plants, power transmission systems, and paper mill, as well as marine, industries. Some type of machining is required for those various applications either for joining or fitting procedures. Machining of GFRP has certain difficulties that may damage the tube itself because of fiber delamination and pull out, as well as matrix deboning. Additionally, short machining tool life may be encountered while the formation of powder like chips maybe relatively hazardous. The present paper investigates the effect of process parameters for surface roughness of glass fiber-reinforced polymer composite pipes manufactured using the filament winding process. Experiments were conducted based on the high-speed turning Computer Numerical Control (CNC) machine using Poly-Crystalline Diamond (PCD) tool. The process parameters considered were cutting speed, feed, and depth of cut. Mathematical models for the surface roughness were developed based on the experimental results, and Analysis of Variance (ANOVA) has been performed with a confidence level of 95% for validation of the models.

Review on glass fiber reinforced polymer composites

2021 ◽  
Author(s):  
Priyadarsini Morampudi ◽  
Kiran Kumar Namala ◽  
Yeshwanth Kumar Gajjela ◽  
Majjiga Barath ◽  
Ganaparthy Prudhvi
Keyword(s):  
Glass Fiber ◽  
Polymer Composites ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Polymer Composites

Simulation Behavior of Flexure in Reinforced Concrete Beam with Opening Reinforced with Glass Fiber Reinforced Polymer (GFRP)

2016 ◽  
Vol 857 ◽  
pp. 421-425
Author(s):  
Saif M. Thabet ◽  
S.A. Osman
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Glass Fiber ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

This paper presents an investigation into the flexural behaviour of reinforced concrete beam with opening reinforced with two different materials i.e., steel and Glass Fiber Reinforced Polymer (GFRP). Comparison study between the two different materials were carried out and presented in this study through non-linear Finite Element Method (FEM) using the commercial ABAQUS 6.10 software package. The performance of the opening beam reinforced with GFRP is influenced by several key parameters. Simulation analyses were carried out to determine the behavior of beam with opening subjected to monotonic loading. The main parameters considered in this study are size of opening and reinforcement diameter. The results show that GFRP give 23%-29% more ductility than steel reinforcement. The result also shows when the size of opening change from 200mm to 150mm or from 150mm to 100mm the ultimate load capacity increase by 15%. In general, good agreement between the Finite Element (FE) simulation and the available experimental result has been obtained.

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