Abstract
Acoustic Emission (AE)technique has been successfully used to monitor processes like metal cutting, grinding and electron beam welding as a nondestructive evaluation method. Friction Stir Welding (FSW) is a solid state welding that avoids problems associated with fusion welding and is used in aerospace industries. An attempt has been made to study the application of AE technique to monitor FSW process by identifying the occurrence of defect while welding is in progress and suggest means to rectify the defect. In this study, aluminum alloy AA6061-T6 has been used as work piece material. It was observed that the nature of AE signals produced during welding are helpful in identifying the occurrence of defects produced. The values of a few AE parameters derived from AE signals were found to be helpful in developing a model for online monitoring of FSW process to produce defect free welds. The model has been successfully validated.
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References:
Rajiv S. Mishra, Murray W. Mahoney-editors. Friction Stir Welding and Processing, ASM International, (2007)1–5.
J. H. Cho, W M, D E Boyce and P R Dawson. Modeling strain hardening and texture evolution in friction stir welding of stainless steel. Materials Science and Engineering A, 2005; 398: 146–163.
H. Liu. H. Fujii, M. Maeda and K. Nogi — Tensile properties and fracture locations of friction stir welded joints of 6061-T6 Aluminum alloy. Journal of Materials Science Letters, 2003; 22:1061–1063.
J.Q. Su, T W Nelson, R Mishra and M Mahoney. Micro structural investigation of friction stir welded 7050-T651 aluminum. Acta Materialia, 2003; 51(3): 713 – 729.
C. N. Suresha, B. M. Rajaprakash, and Sarala Upadhya. A Study of the Effect of Tool Pin Profiles on Tensile Strength of Welded Joints Produced Using Friction Stir Welding Process, International Journal of Materials and Manufacturing Processes, 26 (2011), 1111–1116.
Mark F. Carlos. A E: Heeding the Warning Sounds from Materials, ASTM Standardization News, October 2003.
[7] Carpinteri. Structural damage diagnosis and life-time assessment by A E monitoring-Engineering Fracture Mechanics 74 (2007), 273–289.
Xiaozhi Chen. Beizhi Li. A E method for tool condition monitoring based on wavelet analysis: International Journal of Advanced Manufacturing Technology,33(2007), 968–976.
Beattie. A.G., Shurtleff. W.W. Results of Acoustic Emission Tests on Halon Fire Bottles-report, Sandia National Laboratories. 1996.
Shiroishi. J, Li .Y, Liang S, Kurfess .T, Danyluk .S. Bearing Condition Diagnostics via Vibration and Acoustic Emission Measurements-report. Georgia Institute of Technology Atlanta, Georgia, 1997.
Dunegan. H.L. An Acoustic Emission Technique for Measuring Surface Roughness-a report. December 1998.
Craig B. Van Way, Jayanth N. Kudva. Structural Health Monitoring of Full scale Components Using Acoustic Emission And Fiber Optic Sensors- Paper presented at the RTO AVT Specialists’ Meeting on “Exploitation of Structural Loads/Health Data for Reduced Life Cycle Costs”, held in Brussels, Belgium, and published in RTO May 1998, MP-7:11–12.
Lee C. S. Huh J. H. Ll D. M and Shin D. H. Acoustic Emission Behavior during Tensile Tests of Low Carbon Steel Welds. ISIJ International, Vol. 39 No. 4; 1999: 365–370.
Miettinen, J., Pataniitty, P- Acoustic Emission in Monitoring Extremely Slowly Rotating Rolling Bearing. Proceedings of COMADEM ’99. Oxford, Cox moor Publishing Company. 1999. ISBN 1–901892–13–1. 289–29.
C. Beggan, M. Woulfe, P. Young and G. Byrne. Using Acoustic Emission to Predict Surface Quality, Int J Adv Manuf Technol,1999; 15:737–742.
Jaap H. Heida and Walter G.J. ‘HART, National Aerospace Laboratory NLR, Amsterdam, The Netherlands- Acoustic Emission and Ultrasonic Inspection for the Monitoring of Cure Related Defects in thick RTM Products, ECNDT — We. 1.7.2,2006.
J. Kopač, S. Sali. Acoustic emission in drilling carbon steel and nodular gray iron. Journal of Achievements in Materials and Manufacturing Engineering, Volume 19 Issue 1 November 2006:91–95.
V. A. Akop’yan. Correlations between Parameters of Acoustic-Emission Signals and Corrosion Damage in Aluminum Alloys, ISSN 1061–8309, Russian Journal of Nondestructive Testing, 2007, Vol. 43, No. 6: 390–396.
Xiaozhi Chen . Beizhi Li. Acoustic emission method for tool condition monitoring based on wavelet analysis- Int J Adv Manuf Technol .2007: 968 – 976.
Sundaram .S, Senthilkumar .P, Kumaravel .A and Manoharan .N Study of Flank Wear in Single Point Cutting Tool Using Acoustic Emission Sensor Techniques. ARPN Journal of Engineering and Applied Sciences. VOL. 3, NO. 4, AUGUST 2008:32–36.
B.M. Rajaprakash, C.N. Suresha, Sarala Upadhya, application of acoustic emission technique to monitor friction stir welding process to produce defect free welds, Friction Stir Welding and Processing VII, (Proceedings of TMS 2013), chapter 3.
C.N. Suresha, “Studies on The Performance of the Welded Joints Produced by Friction Stir Welding Process using Acoustic Emission Technique” Ph.D thesis, Bangalore University, INDIA, 2013.
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Rajaprakash, B.M., Suresha, C.N., Rachappa, Upadhya, S. (2014). Application of Acoustic Emission Technique for Online Monitoring of Friction Stir Welding Process During Welding of AA6061-T6 Aluminum Alloy. In: TMS 2014: 143rd Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48237-8_87
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DOI: https://doi.org/10.1007/978-3-319-48237-8_87
Publisher Name: Springer, Cham
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