Stress-Strain Response Modelling of Glass Fibre Reinforced Epoxy Composite Pipes under Multiaxial Loadings

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.

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UV resistibility of a nano-ZnO/glass fibre reinforced epoxy composite

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.11.014 ◽

2014 ◽

Vol 56 ◽

pp. 254-257 ◽

Cited By ~ 32

Author(s):

Tsz-ting Wong ◽

Kin-tak Lau ◽

Wai-yin Tam ◽

Jinsong Leng ◽

Julie A. Etches

Keyword(s):

Glass Fibre ◽

Epoxy Composite ◽

Nano Zno ◽

Glass Fibre Reinforced

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Response of Glass Fibre Reinforced Nano Epoxy Composite Subjected to Shear and Flexural Loads

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.11.3.19 ◽

2019 ◽

Vol 11 (3) ◽

Author(s):

R. Amitkumar ◽

Kanu Priya Jhanji ◽

P.S. Venkatanarayanan ◽

M.Joel Soris ◽

Nishanth Srikanth

Keyword(s):

Glass Fibre ◽

Composite Laminates ◽

Mechanical Performance ◽

Epoxy Composite ◽

Nano Particles ◽

Resin System ◽

Civil Structures ◽

Shear Loads ◽

Glass Fibre Reinforced

Use of composite laminates is found in various applications such as aircraft and automotive, sports, rocket parts and civil structures. Resin system of the polymer composites enacts a crucial role of binding the reinforcements properly to provide good mechanical properties. The presence of any kind of filler alters the properties of resin system which in turn also alters the mechanical behaviour of composite laminate. In the present work an attempt has been made to enhance the mechanical performance of glass fibre epoxy composites by embedding nano calcium carbonate particles in resin system. These particles were added in different weight fractions like 1, 3 and 5% and the response of GFRP nano composites were recorded under flexural and shear loads. Composite laminates with 3% wt. of nano particles have shown considerable improvement among the other laminates.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.695.639 ◽

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°.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.695.725 ◽

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.

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