Sensitivity analysis in adhesively-joined glass/carbonepoxy composite-metal pipes under tensile loading

In this article the effect of the displacement rate under tensile loading on the adhesive connection in glass-epoxy and carbon-epoxy composite and metal pipes has been investigated. For this purpose, bonded pipe specimens were fabricated with different thicknesses and adhesive areas (the length of 10, 20, and 30 mm and the thickness of 0.25, 0.10, and 0.40 mm). Then, samples were exposed to tensile loading at various displacement rates (0.5, 5, and 50 mm/min) and moreover, their strengths and failure types were determined. Based on the results, for the carbon-epoxy specimens, the maximum force increased by increasing the displacement rate. The fracture area was also changed from the adhesive area to the composite due to the increase in the displacement rate. It could be claimed about the glass-epoxy samples that under tensile loading, the maximum force enhanced gradually by increasing the displacement rate. Finally, the regression analysis for the maximum force and the elongation was not properly valid based on the sensitivity analysis.