Bolted joints in quasi-unidirectional glass-fibre NCF composite laminates

Creative Commons License

İnal O., Balıkoğlu F., Ataş A.

Composite Structures, vol.183, no.1, pp.536-544, 2018 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 183 Issue: 1
  • Publication Date: 2018
  • Doi Number: 10.1016/j.compstruct.2017.05.075
  • Journal Name: Composite Structures
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.536-544
  • Keywords: Bolted joint strength, Glass fibre reinforced plastic (GFRP) composites, Non-crimp fabric (NCF) composites, Progressive damage modelling (PDM)
  • Istanbul Technical University Affiliated: No


In this study, crossply and quasi-isotropic quasi-unidirectional (quasi-UD) non-crimp fabric (NCF) glass/epoxy laminates were manufactured by using vacuum assisted resin transfer moulding (VARTM) and tested according to the ASTM bearing test standard D5961. The specimen geometry was kept constant in all specimens with the ratios of e/d = 3, w/d = 6 for d = 6 mm. Similar damage modes and damage propagation trends were observed between the classical unidirectional prepreg tapes and the current material system. Furthermore, the bolted joint strength of quasi-UD NCF glass/epoxy laminates was estimated by a three-dimensional (3-D) progressive damage model (PDM) to evaluate the capabilities of a widely used finite element (FE) program, ANSYS. The experimental data and predicted results were in a good agreement and the experimental failure modes were successfully predicted.