Browsing by Author "Kemiklioglu U."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Strength comparison of ductile and brittle adhesives under single and repeated impacts
    (Springer International Publishing, 2015) Kemiklioglu U.; Sayman O.; Batar T.; Soykok I.F.; Akderya T.; Akan E.
    In this study, the failure strengths of adhesively bonded joints were investigated. The glass fiber epoxy composites used as adherends were manufactured by using vacuum assisted resin infusion method (VARIM). The adhesively joint materials were Loctite-9466 and DP-460 as a brittle and ductile material, respectively. Since the strengths of these materials are close to each other under static loading, the applied axial energies were determined using different levels of 5, 10, 15 and 20 Joules. In order to determine the energy characteristics of the experiments, axial impact loadings were applied as both single and repeated three times under the same conditions. The results showed that the failure strengths of these two different adhesives of Loctite-9466 and DP460 changed depending on single and three times repeated axial impact loadings. This paper is intended to give an overview between ductile and brittle adhesives under both single and repeated impacts. In addition, it will help for designers who need information on mechanical properties of ductile and brittle adhesives under single and repeated impacts. © 2015, Kemiklioglu et al. All Right Reserved.
  • No Thumbnail Available
    Item
    The mechanical behaviour of adhesively bonded composite joints under repeated axial impacts at different temperatures
    (Walter de Gruyter GmbH, 2017) Kemiklioglu U.; Sayman O.; Soykok I.F.; Akderya T.; Dere R.
    In this study, the failure strength of single-lap adhesively bonded joints was investigated. The glass fibre epoxy composites used as adherends were manufactured by using a vacuum-assisted resin infusion method. These composites were bonded with a commercial material of epoxy-adhesive DP-460, which can be cured easily at room temperature. The specimens were built by bonding, and then repeated axial impact loads having various energy levels (0, 5, 10, 15, and 20 J) were implemented to the single-lap adhesively bonded composite joints at different temperatures (-20°C, 0°C, 20°C, 40°C, and 60°C). Subsequently, the specimens were exposed to static tensile loading at the same temperatures as those applied during the primary impacts. The variation in failure loads due to the effects of repeated axial impact loadings at different temperatures were investigated. Generally, the increase of impact energy level from 0 to 20 J leads to a gradual decrease in failure loads at all temperature levels except for the specific value of 40°C. © 2017 Walter de Gruyter GmbH, Berlin/Boston.