Comparison of the Effects of Shot Blasting and Sandblasting Processes on the Strength of the Aluminum Adhesive Bonded Joints

Document Type : Research Article

Authors

Mechanical Engineering department, College of Engineering, University of Tehran, Tehran, Iran

Abstract

In this paper, the influences of surface roughness on the strength of the single lap adhesive joints for the prepared adherent with shot blasting and sandblasting processes were examined. Sheets from 2024-T3 aluminum alloy were cut into pieces and then shot blasted at four different durations and sandblasted with four different pressures. Prepared aluminum specimens were jointed using two different adhesives, two-component Araldite 2015 with high viscosity and epoxy HPL1012/HPH112 with low viscosity. The effects of process parameters on the surface roughness of the adherent and ultimate shear strength of the joint were investigated using design of experiments technique. Tensile test was used to determine the ultimate strength of the joints. The obtained results were presented comparatively. It was shown that by increasing the surface roughness of shot blasted and sandblasted samples, the ultimate shear strength of the joints increases continuously. The optimum surface treatment for ductile and brittle adhesives was similar that shown no relation of this optimum roughness to adhesive type in the prepared samples with sandblast and shut blast processes. The highest ultimate shear strength was obtained for the sandblasted specimens at maximum pressure of 6 bar with 0.6 micrometers of surface roughness.

Keywords

Main Subjects

References

[1] R.M. Jones, Mechanics of Composite Materials, Scripta Book Company, Washington DC, 1975.
[2] P.M. Lonardo, A.A.G. Bruzzone, Influence of Surface Roughness Parameters on the Mechanical Strength in Metal Gluing, CIRP Annals, 38(1) (1989) 571-574.
[3] M. Banea, L.F. da Silva, Adhesively bonded joints in composite materials: an overview, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 223(1) (2009) 1-18.
[4] S.-Y. Fu, X.-Q. Feng, B. Lauke, Y.-W. Mai, Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate–polymer composites, Composites Part B: Engineering, 39(6) (2008) 933-961.
[5] A. Rudawska, Selected aspects of the effect of mechanical treatment on surface roughness and adhesive joint strength of steel sheets, International Journal of Adhesion and Adhesives, 50 (2014) 235-243.
[6] T. Şekercı́oǧlu, H. Rende, A. Gülsöz, C. Meran, The effects of surface roughness on the strength of adhesively bonded cylindrical components, Journal of Materials Processing Technology, 142(1) (2003) 82-86.
[7] S. Aydin, M.Y. Solmaz, A. Turgut, The effects of adhesive thickness, surface roughness and overlap distance on joint strength in prismatic plug-in joints attached with adhesive, International Journal of Physical Sciences, 7(17) (2012) 2580-2586.
[8] E. Njuhovic, A. Witt, M. Kempf, F. Wolff-Fabris, S. Glöde, V. Altstädt, Influence of the composite surface structure on the peel strength of metallized carbon fibre-reinforced epoxy, Surface and Coatings Technology, 232 (2013) 319-325.
[9] C. Mandolfino, E. Lertora, C. Gamparo, Effect of surface pretreatment on the performance of adhesive-bonded joints, Key Engineering Materials, 554 (2013) 996-1006.
[10] N. Atikah, M. Afendi, S. Hirmaliza, M. Majid, N. Amira, M.N. Mazlee, Strength of Ductile Adhesive Butt Joint Bonded with Dissimilar Adherents: Effect of Surface Roughness, Applied Mechanics & Materials, 554 (2014).
[11] S. Budhe, A. Ghumatkar, N. Birajdar, M. Banea, Effect of surface roughness using different adherend materials on the adhesive bond strength, Applied Adhesion Science, 3(1) (2015) 20.
[12] R.D.S.G. Campilho, M.D. Banea, J.A.B.P. Neto, L.F.M. da Silva, Modelling adhesive joints with cohesive zone models: effect of the cohesive law shape of the adhesive layer, International Journal of Adhesion and Adhesives, 44 (2013) 48-56.
[13] E.M. Petrie, Handbook of Adhesive and Sealants, Second Edition, McGraw-Hill, New York, 2007.
Amirkabir Journal of Mechanical Engineering
Volume 50, Issue 5
January and February 2019
Pages 1015-1022

Files

Share

How to cite

Statistics