Impact of humidity on the durability of E-glass/polymer composites

Ghydaa Alawsi, Saud Aldajah, Safa Abdul Rahmaan

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Severe environmental exposure affects physical and mechanical properties of polymeric composite materials resulting in an undesirable degradation. This paper studies the impact of high humidity exposure (98% relative humidity), which simulates the outdoor conditions in the gulf region, on the durability of symmetric and anti-symmetric E-glass-fiber-reinforced (GFR) composite laminates. Samples were placed in the high humidity room for 2000 h. Aged samples were then examined using the three-point bending test (ASTM D 790-02) in order to assess the impact of humidity exposure on the flexure modulus and strength of the GFR laminates. Scanning electron microscope (SEM) was used in order to examine the fractured samples microstructure. Results show that the humidity environment has affected the strength and flexure modulus of the exposed samples. Symmetric laminates lost approximately 54% of the flexural stiffness and 19% of the flexural strength, whereas anti-symmetric samples lost 27% of the flexural stiffness and 7% of the flexural strength.

Original languageEnglish
Pages (from-to)2506-2512
Number of pages7
JournalMaterials and Design
Issue number7
Publication statusPublished - Aug 2009


  • Degradation
  • Durability
  • GFRP
  • Humidity

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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