Impact of Hygrothermal and Loading Conditions on Apparent Diffusivity of GFRP Composites

Authors

  • Sushma SINGH Department of Mechanical Engineering, Baddi University, Baddi
  • Khushmeet KUMAR Department of Mechanical Engineering, Baddi University, Baddi

Keywords:

GFRP, composite, sandwich, polystyrene, apparent diffusivity

Abstract

Glass fibre-reinforced polymer (GFRP) has been used as an alternative to steel in concrete due to high strength-to-weight ratio, high stiffness-to-weight ratio, and corrosion and fatigue resistance. The main environmental factors for the deterioration of GFRP sandwich composites are temperature, sunshine, water/moisture, alkalinity and load. Most of the early durability tests were carried out with reference to application of FRP (Fibre Reinforced Polymer) in aerospace industries. Hygrothermal behaviour of preloaded sandwich structure immersed in water is examined herein. Moisture uptake was monitored for 50 days yielding percentage weight gain curves for samples of matrix (epoxy) and sandwich structure with different core thickness. The apparent diffusivity values extracted from the weight gain are significantly greater for initial days for greater core thickness sandwich structures.

doi:10.14456/WJST.2015.30

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Author Biographies

Sushma SINGH, Department of Mechanical Engineering, Baddi University, Baddi

Assistant Professor, Department of Mechanical Engineering

Khushmeet KUMAR, Department of Mechanical Engineering, Baddi University, Baddi

Assistant Professor, Department of Mechanical Engineering

References

Composite Material, Available at: http://en.wikipedia.org/wiki/Compositematerial.html, accessed July 2013.

Composite Materials, Available at: www.structsource.com/pdf/composite.pdf, accessed July 2013.

Composite Materials, Available at: www.structsource.com/pdf/composite.pdf, accessed July 2013.

V Alvarez and A Vazquez. Effect of hygrothermal history on water and mechanical properties of glass/vinylester composite. J. Compos. Mater. 2005; 40, 2009-23.

A Mukherjee and SJ Arwikar. Performance of externally bonded GFRP sheets on concrete in tropical environments Part II: Micro structural tests. ACI Struct. J. 2006; 81, 33-40.

A Siriruk, YJ Weitsman and D Penumadu. Effect of sea environment on interfacial delamination behaviour of polymeric sandwich structures. Compos. Sci. Tech. 2009; 69, 821-8.

CA Steeves and NA Fleck. Collapse mechanisms of sandwich beams with composite faces and a foam core, loaded in three-point bending. Part II: Experimental investigation and numerical modelling. Int. J. Mech. Sci. 2004; 46, 585-608.

DR Veazie, KR Robinson and K Shivakumar. Effects of the marine environment on the interfacial fracture toughness of PVC core sandwich composites. Compos. B: Eng. 2004; 35, 461-6.

F Aviles and MA Montero. Mechanical degradation of foam-cored sandwich materials exposed to high temperature. Compos. Struct. 2010; 92, 122-9.

J Yu, E Wang, J Li and Z Zheng. Static and low-velocity impact behaviour of sandwich beams with closed-cell aluminium-foam core in three-point bending. Int. J. Impact Eng. 2008; 35, 885-94.

P Vaddadi, T Nakamura and RP Singh. Transient Hygrothermal stresses in fibre reinforced composites a heterogeneous characterization approach. Compos. A: Appl. Sci. Manuf. 2003; 34, 719-30.

I Ghorbel and D Valentin. Hydrothermal effects on the physico-chemical properties of pure and glass-fiber reinforced polyester and vinylester resins. Polymer Compos. 1993; 14, 324-34.

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Published

2014-02-28

How to Cite

SINGH, S., & KUMAR, K. (2014). Impact of Hygrothermal and Loading Conditions on Apparent Diffusivity of GFRP Composites. Walailak Journal of Science and Technology (WJST), 12(4), 383–392. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/954

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Section

Research Article