Browsing by Subject "Static tensile loading"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Effects of axial impacts at different temperatures on failure response of adhesively bonded woven fabric glass fiber/epoxy composite joints
    (SAGE Publications Ltd, 2015) Sayman O.; Soykok I.F.; Dogan T.; Dogan A.; Arikan V.
    Evaluating post-impact failure responses of single-lap adhesively bonded composite-to-composite joints in uniaxial static tensile loading was the main objective of the current experimental study. At first, axial tensile impacts having various energy levels (10, 15, 20, and 25 J) were applied to the joints at different temperatures (-20, 0, room temperature, 50, and 80). Afterward, the samples were secondarily subjected to static tensile loading at ambient temperature, so that reductions in joint strengths arising from the impacts performed under different loading conditions could be assessed. Consequently, it was definitely proved that each of the axial impacts performed in any loading case has a noticeable effect on ultimate joint strengths, proportionally to the acting condition. Besides, the combination of high energy and temperature sometimes appeared to be the reason of impact failure, which occurs instantly without being able to perform axial static tests. When applied energy and/or absolute difference from room temperature is increased, lower joint resistances could be measured during secondary tensile tests. © The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.
  • 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.