Effects of water absorption on the mechanical properties of GFRPs
Source abstract
Abstract
Abstract This study reports on the effects of water absorption on the anisotropic mechanical response of an epoxy resin reinforced with E-glass fibres. Composite specimens were conditioned by immersion in pure water at 50 °C for different time durations, up to full saturation. Water-saturation resulted in reduction of stiffness and strength, in the range of strain rate 0.001–700s−1. Experiments on re-dried specimens after water saturation showed a limited recoverability of the original mechanical properties. Water absorption increased the sensitivity of the mechanical response of the GFRPs to the applied strain rate. Finite element simulations of the response of a unit cell of the unidirectional composite were performed to understand the role of the hygroscopic stresses induced by water absorption, and it was found that this is negligible due to the active mechanisms of viscoelastic relaxation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Natural Fiber Reinforced Composites · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Effect of hydrostatic pressure on the water absorption of glass fibre-reinforced epoxy resin10.1016/0010-4361(88)90122-X ↗
2. Effects of seawater immersion on water absorption and mechanical properties of GFRP composites10.1177/0021998312436992 ↗
3. Seawater immersion ageing of glass-fibre reinforced polymer laminates for marine applications10.1016/S1359-835X(99)00037-8 ↗
4. Hygromechanical coupling in laminate composites and its effect on interlaminar failure10.1016/j.compositesa.2016.01.012 ↗
5. Impact of sea and tap water exposure on the durability of GFRP laminates10.1016/j.matdes.2008.07.044 ↗
6. Determination of moisture effects on impact properties of composite materials10.1023/A:1015864932198 ↗
7. Accelerated ageing of a glass fibre-reinforced epoxy resin in water10.1016/0010-4361(83)90141-6 ↗
8. Moisture uptake characteristics of a pultruded fibre reinforced polymer flat sheet subjected to hot/wet aging10.1016/j.polymdegradstab.2015.10.001 ↗
9. A fully coupled diffusion--reaction scheme for moisture sorption--desorption in an anhydride-cured epoxy resin10.1016/j.polymer.2012.09.037 ↗
10. Effects of moisture on glass fiber-reinforced polymer composites10.1177/0021998314527330 ↗
11. Seawater durability of glass- and carbon-polymer composites10.1016/j.compscitech.2003.10.019 ↗
12. Sorption modes of water in glassy epoxies10.1016/S0376-7388(00)85035-8 ↗
13. Hygrothermal effects of epoxy resin. Part I: the nature of water in epoxy10.1016/S0032-3861(98)00790-3 ↗
14. Characterizing the toughness of an epoxy resin after wet aging using compact tension specimens with non-uniform moisture content10.1016/j.polymdegradstab.2014.08.005 ↗
15. Quino · 2013
16. Hygrothermal effects of epoxy resin. Part II: variations of glass transition temperature10.1016/S0032-3861(98)00791-5 ↗
17. In-situ strength degradation of glass fibers in a pultruded composite by environmental aging10.1023/A:1006624730257 ↗
18. Effect of hydrothermal ageing on bond strength10.1016/0010-4361(94)90191-0 ↗
19. Effect of water on the mechanical adhesion of the glass/epoxy interface10.1016/0010-4361(94)90192-9 ↗
20. Impact of humidity on the durability of E-glass/polymer composites10.1016/j.matdes.2008.10.002 ↗
21. Accelerated environmental ageing study of polyester/glass fiber reinforced composites (GFRPCs)10.1016/j.compositesb.2006.10.004 ↗
22. Thermal expansion and swelling of cured epoxy resin used in graphite/epoxy composite materials10.1007/BF00550593 ↗
23. Swelling of DGEBA/DDA epoxy resin during hygrothermal ageing10.1016/S0032-3861(97)10060-X ↗
24. K. Derrien and P. Gilormini, “The effect of moisture-induced swelling on the absorption capacity of transversely isotropic elastic polymer--matrix composites,” Int. J. Solid Struct., vol. 46, no. 6, pp. 1547–1553, Mar. 2009.10.1016/j.ijsolstr.2008.11.014 ↗
25. Shelby · 2015
26. ASTM International, “ASTM D3039, Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials.” ASTM International, West Conshohocken, PA, pp. 1–13, 2008.
27. ASTM D2344, Standard Test Method for Short-Beam Strength of Polymer Matrix Composite Materials
28. Measurements of the effects of pure and salt water absorption on the rate-dependent response of an epoxy matrix10.1016/j.compositesb.2018.03.044 ↗
29. Deformation of thermosetting resins at impact rates of strain. Part I: experimental study,10.1016/S0022-5096(00)00085-5 ↗
30. Experimental characterisation and constitutive modelling of RTM-6 resin under impact loading10.1016/j.polymer.2008.04.018 ↗
31. The mechanical response of a syntactic polyurethane foam at low and high rates of strain10.1016/j.ijimpeng.2014.08.005 ↗
32. Numerical predictions of the anisotropic viscoelastic response of uni-directional fibre composites10.1016/j.compositesa.2016.10.029 ↗
33. Further evidence against the orientation of structure in glass fibers10.1111/j.1151-2916.1953.tb12872.x ↗
34. Comsol
35. Measurements and predictions of the viscoelastic properties of a composite lamina and their sensitivity to temperature and frequency10.1016/j.compscitech.2017.06.005 ↗
36. A new algorithm to generate representative volume elements of composites with cylindrical or spherical fillers10.1016/j.compositesb.2016.10.078 ↗
37. Systèmes · 2014
38. Ward · 2004
39. Evaluation of interfacial relaxation due to water absorption in fiber–polymer composites10.1016/j.compscitech.2006.02.022 ↗