Articles | Volume 3, issue 1
Wind Energ. Sci., 3, 427–438, 2018
Wind Energ. Sci., 3, 427–438, 2018

Research article 20 Jun 2018

Research article | 20 Jun 2018

Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass–epoxy composites

Jake D. Nunemaker et al.

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Cited articles

Assarar, M., Scida, D., El Mahi, A., Poilane, C., and Ayad, R.: Influence of water ageing on mechanical properties and damage events of two reinforced composite materials: Flax-fibres and glass-fibres, Mater. Design, 32, 788–795,, 2011. 
Bohse, J.: Acoustic emission characteristics of micro-failure processes in polymer blends and composites, Compos. Sci. Technol., 60, 1213–1226,, 2000. 
Bourchak, M., Farrow, I., Bond, I., Rowland, C., and Menan, F.: Acoustic emission energy as a fatigue damage parameter for CFRP composites, Int. J. Fatigue, 29, 457–470, 2007. 
Czigány, T., Mohd Ishak, Z. A., and Karger-Kocsis, J.: On the failure mode in dry and hygrothermally aged short fiber-reinforced injection-molded polyarylamide composites by acoustic emission, Appl. Compos. Mater., 2, 313–326,, 1995. 
deGroot, P. J., Wijnen, P. A. M., and Janssen, R. B. F.: Real-time frequency determination of acoustic emission for different fracture mechanisms in carbon epoxy composites, Compos. Sci. Technol., 55, 405–412,, 1995. 
Short summary
This paper presents an experimental investigation of the tensile strength of fiberglass–epoxy composites before and after water saturation. The strengths of [0], [90], and [0/90] layups all show a drop in tensile strength. However, investigation of the data, damaged coupons, and acoustic emission events illustrates a change in the mechanism governing final failure between the dry and saturated coupons. This illustrates the complexity of strength prediction of multiple layups after saturation.