General Lifetime Damage Model for Glass Fibre Reinforced Epoxy (GRE) Composite Pipes under Multiaxial Loading

2013 ◽  
Vol 594-595 ◽  
pp. 624-628 ◽  
Author(s):  
Mohd Shukry Abdul Majid ◽  
M. Afendi ◽  
R. Daud ◽  
N.A.M. Amin ◽  
Azizul Mohamad ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Hoop Stress ◽  
Damage Model ◽  
Wall Stress ◽  
Energy Criterion ◽  
Graphical Form ◽  
Quadratic Term ◽  
Laminate Theory ◽  
Glass Fibre Reinforced ◽  
Composite Pipes

This paper presents the modelling of a general lifetime performance for glass fibre reinforced epoxy (GRE) composite pipes similar to the well-known Tsai-Hill interactive failure criterion. Tsai Hill criterion is based on the Von Misses distortional energy criterion which was modified to satisfy the orthotropic nature of GRE composite pipes. The effects of stress developed in each ply from ultimate elastic wall stress (UEWS) test were expressed in a single quadratic term of axial and hoop stress through laminate theory. The term then solved to produce limits with respect to axial and hoop stress, which represented in a graphical form of failure envelope. The modelled envelop shows a good agreement with experimental data from the multiaxial UEWS test of ±55° GRE composite pipes. This indicates that such model can be used to predict the long-term performance of GRE pipes under combine loadings.

Performance Simulation of Glass Fibre/Epoxy Composite Pipes under Multiaxial Stress Loading

2014 ◽  
Vol 695 ◽  
pp. 725-728
Author(s):  
Z.S. Nazirah ◽  
Mohd Shukry Abdul Majid ◽  
R. Daud
Keyword(s):  
Finite Element ◽  
Glass Fibre ◽  
Finite Element Modelling ◽  
Stress Test ◽  
Axial Loading ◽  
Wall Stress ◽  
Chemical Corrosion ◽  
Element Modelling ◽  
Glass Fibre Reinforced ◽  
Composite Pipes

Nowadays composite material especially Glass fibre reinforced epoxy (GRE) composites is one of the most widely used composite materials in such areas, especially in the marine, building and oil industry due to their lightweight, high strength and chemical/corrosion resistant properties. The aim of this paper is to provide an improved understanding of the performance of glass fibre reinforced epoxy (GRE) pipe under combined pressure and axial loads. The performances of GRE composite pipes is investigated through finite element modelling of ultimate elastic wall stress test under multi-axial loading ranging from pure axial to pure hoop loadings. ANSYS software will be used for finite element modelling of GRE pipes. A stress-strain response was obtained for each winding angle and the results for modelling then compared with those experimental computed through laminate theory. It is also concluded that the experimental results stress, which represent the onset of non-linearity were very much dependent on the transverse and shear stress response, and these values were found to be consistent with the predicted values from the commonly used Tsai-Wu failure criterion.

Modelling of Multi-Axial Ultimate Elastic Wall Stress (UEWS) Test for Glass Fibre Reinforced Epoxy (GRE) Composite Pipes

2013 ◽  
Vol 367 ◽  
pp. 113-117
Author(s):  
M.S. Abdul Majid ◽  
M. Afendi ◽  
R. Daud ◽  
N.A.M. Amin ◽  
A. Mohamad ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Raw Materials ◽  
Wall Stress ◽  
Good Alternative ◽  
Matrix Cracking ◽  
Filament Wound ◽  
Elastic Wall ◽  
Glass Fibre Reinforced ◽  
Composite Pipes ◽  
Good Agreement

This paper describes the modeling of multiaxial ultimate elastic wall stress (UEWS) at room temperature for glass fibre reinforced epoxy (GRE) composite pipes. The model developed, predicts the stress-strain response caused by the combined, static and cyclic of UEWS loading taking into effects of transverse matrix cracking within the laminates. The procedure, although not a standard method, seems to provide a good alternative to the current raw materials' re-qualification procedure delineated in ISO 14692 through ASTM D2992. The effective transverse and shear modulus of the lamina due to increasing presence of transverse matrix cracking were estimated. Classical laminate analysis was then applied to compute the corresponding ply properties as a function of increasing stress and strain. The model shows a good agreement with the experimental results of multiaxial UEWS tests on ±55° filament wound glass-reinforced epoxy pipes.

Ultimate elastic wall stress (UEWS) test of glass fibre reinforced epoxy (GRE) pipe

2011 ◽  
Vol 42 (10) ◽  
pp. 1500-1508 ◽  
Author(s):  
M.S. Abdul Majid ◽  
T.A. Assaleh ◽  
A.G. Gibson ◽  
J.M. Hale ◽  
A. Fahrer ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Wall Stress ◽  
Elastic Wall ◽  
Glass Fibre Reinforced

The Effects of Winding Angles and Elevated Temperatures on the Crushing Behaviour of Glass Fibre/Epoxy Composite Pipes

2014 ◽  
Vol 695 ◽  
pp. 639-642
Author(s):  
S.N. Fitriah ◽  
M.S. Abdul Majid ◽  
R. Daud ◽  
Mohd Afendi
Keyword(s):  
Compressive Strength ◽  
Glass Fibre ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Testing Machine ◽  
Universal Testing ◽  
Glass Fibre Reinforced ◽  
Crushing Behavior ◽  
Composite Pipes ◽  
Winding Angle

The paper discusses the crushing behavior of various winding angles of glass fibre reinforced epoxy (GRE) pipes at elevated temperatures. Two different winding angles of composite pipes were chosen for the study; ± 55°, ± 63°. GRE pipes angled ± 55° and ± 63° are compressed using Universal Testing Machine (UTM) at room temperature and elevated temperatures of 45°C, 65°C, and 95°C according to ASTM D695-10 standard. The temperatures were chosen based on the glass transition temperature (Tg) that was measured earlier. The results show that as the temperature is increased, the compressive strength significantly degraded. This is due to the change in the properties of the GRE pipe from a rigid state to a more rubbery state as the composite pipe reached Tg. GRE pipe with winding angle ± 55° show a higher compressive strength compared to ± 63°.

The Interlaminar Shear Strength Test of Helical Wound Glass Fibre Reinforced Epoxy Laminates Subjected to Hydrothermal Ageing

2014 ◽  
Vol 554 ◽  
pp. 391-395
Author(s):  
M.S. Abdul Majid ◽  
Mohd Afendi ◽  
R. Daud ◽  
N.A.M. Amin ◽  
Azizul Mohamad ◽  
...  
Keyword(s):  
Shear Strength ◽  
Glass Fibre ◽  
Mechanical Test ◽  
Monitoring Program ◽  
Interlaminar Shear Strength ◽  
Test Method ◽  
Internal Quality ◽  
Glass Fibre Reinforced ◽  
Interlaminar Shear ◽  
Composite Pipes

This paper presents the experimental investigation of interlaminar shear strength (ILSS) tests of helical wound glass fibre reinforced epoxy (GRE) pipes subjected to hydrothermal ageing. Currently, the test is being used by composite pipes manufacturers as the alternative internal quality monitoring program for detection of manufacturing changes and reconfirmation of the design basis of composite pipes. The test specimens were cut in hoop direction from helically wound GRE composite pipes after exposure of 0, 250, 500, 1000-hour water at 80°C. The ILSS tests of the GRE samples were then conducted in accordance with ASTM D2344, and the results were analyzed to evaluate the durability performance of the laminates. The results show a clear degradation in the bonding strength between fibres and resin system interface after 500-1000-hour water exposure at 80°C. This findings show a good agreement in the trend observed with the standard qualification procedure elucidated in ASTM D2992 standard. Hence, ILSS test shows a great potential to be used as the internal short-term mechanical test method to qualify a new resin, curing agent or glass fibre in accordance to the next approach.

scholarly journals Influence of water absorption on glass fibre reinforced IPN composite pipes

Polímeros ◽  
2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Suresh Gopi ◽  
Ganesh Babu Loganathan ◽  
Bharani Kumar Sekar ◽  
Rajesh Kanna Krishnamoorthy ◽  
Vivek Sekaran ◽  
...  
Keyword(s):  
Water Absorption ◽  
Glass Fibre ◽  
Influence Of Water ◽  
Glass Fibre Reinforced ◽  
Composite Pipes
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