Abstract
Weight reduction is an important driver of the aerospace industry, which encourages the development of lightweight joining techniques to substitute rivet joints. Friction stir welding (FSW) is a solid-state process that enables the production of lighter joints with a small performance reduction compared to the base material properties. Increasing the FSW lap joint performance is an important concern. Friction stir weld bonding is a hybrid joining technology that combines FSW and adhesive bonding in order to increase the mechanical properties of FSW lap joints. FSW and hybrid lap joints were produced, using 2-mm-thick AA6082-T6 plates and a 0.2-mm-thick adhesive layer. Defect detection using the non-destructive test, phased array ultrasonic testing (PAUT), has been made. Microscopic observations were performed in order to validate the phased array ultrasonic testing results. Lap shear strength tests were carried out to quantify the joint’s quality. PAUT inspection successfully detected non-welded specimens but was not able to distinguish specimens with major hook defects from specimens correctly weld bonded with small hook defects.
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References
Ericsson M, Jin L-Z, Sandström R (2007) Fatigue properties of friction stir overlap welds. Int J Fatigue 29:57–68
Babu S, Ram GDJ, Venkitakrishnan PV, Reddy GM, Rao KP (2012) Microstructure and Mechanical properties of friction stir lap welded aluminum alloy AA2014. Journal of Materials Science & Technology 28:414–426
R. S. Mishra, P. S. De N. Kumar, Friction stir welding and processing, Springer, 2014
Reis L, Infante V, de Freitas M, Duarte FF, Moreira PMG, de Castro PMST (2014) Fatigue behaviour of aluminium lap joints produced by laser beam and friction stir welding. Procedia Engineering 74:293–296
V. Infante, D. F. O. Braga, F. Duarte, P. M. G. Moreira, M. de Freitas P. M. S. T. de Castro, Study of the fatigue behaviour of dissimilar aluminium joints produced by friction stir welding, International Journal of Fatigue, Vols. %1 de %282, Part 2, pp. 310–316, 2016
Braga DFO, de Sousa LMC, Infante V, da Silva LFM, Moreira PMGP (2015) Aluminum friction stir weldbonding. Procedia Engineering 114:223–231
Bird CR (2004) Ultrasonic phased array inspection technology for the evaluation of friction stir welds. Insight-Non-Destructive Testing and Condition Monitoring 46:31–36
Li B, Shen Y, Hu W (2011) The study on defects in aluminum 2219-T6 thick butt friction stir welds with the application of multiple non-destructive testing methods. Mater Des 32:2073–2084
Mandache C, Levesque D, Dubourg L, Gougeon P (2012) Non-destructive detection of lack of penetration defects in friction stir welds. Sci Technol Weld Join 17:295–303
Das H, Kumar A, Rajkumar KV, Saravanan T, Jayakumar T, Pal TK (2015) Nondestructive evaluation of friction stir-welded aluminum alloy to coated steel sheet lap joint. J Mater Eng Perform 24:4192–4199
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Fortunato, J., Anand, C., Braga, D.F.O. et al. Friction stir weld-bonding defect inspection using phased array ultrasonic testing. Int J Adv Manuf Technol 93, 3125–3134 (2017). https://doi.org/10.1007/s00170-017-0770-7
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DOI: https://doi.org/10.1007/s00170-017-0770-7