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 ENG  Vol.13 No.6 , June 2021
Magnetic Technique Estimation of Weld Residual Stress Failure Due to Tensile Loading
Abstract: In Nigeria, most welding activities are carried out by road side welders, majority of this welders are ignorant of weld residual stress and its adverse effect on weldment. Residual stress (RS) measuring device is vital in the measurement of inherent stresses in material. The aim of this research was to employ proof of principle in analyzing the weld residual stresses in a material. This was achieved by measuring samples with magnetic residual stress device and then subjecting the weld samples to mechanical tensile test with hope that materials with more residual stresses fail first. Finally the result from both procedures was compared to establish a relationship. Four (4) pieces of mild steel coupons measuring 100 × 40 × 3 mm were welded, producing two specimens, A11 and B11 of 200 × 40 × 3 mm, respectively. The specimens were measured using the Magnetic device developed and 37 signals were obtained per specimen, thereafter, the welded specimens were subjected to tensile testing and results analyzed. From the results obtained, Specimen A11 was observed to have the highest signal peak at the weld zone with RS signal of 20.3983 mV compared to B11 with 19.358 mV. While under tensile loading, it took 1.63 kN to cause failure to specimen A11 and 8.65 kN for specimen B11. From this simple experiment, it implies that the Magnetic RS device was able to mimic the behavior of residual stress and also predicted that A11 would fail first.
Cite this paper: Etin-Osa, C. and Ebhota, L. (2021) Magnetic Technique Estimation of Weld Residual Stress Failure Due to Tensile Loading. Engineering, 13, 257-266. doi: 10.4236/eng.2021.136019.
References

[1]   Etin-osa, C.E. and Achebo, J.I. (2017) Analysis of Optimum Butt Welded Joint for Mild Steel Components Using FEM (ANSYS). American Journal of Naval Architecture and Marine Engineering, 2, 61-70.
https://doi.org/10.11648/j.aas.20170206.12

[2]   James, M.N. (2010) Residual Stress Influences in Mechanical Engineering. XVIII Congreso Nacional de Ingeniería Mecánica, 1-13.

[3]   Jeffus, L. (2012) Chapter 1: Introduction to Welding. In: Welding Principle and Application, Delmar Cengage Learning, New York, 4-23.

[4]   Anowa, H.D., Achebo, J.I., Ozigagun, A. and Etin-osa, E.C. (2018) Analysis of Weld Molten Metal Kınematic Vıscosıty of Tıg Mıld Steel Weld. International Journal of Advanced Engineering and Management Research, 3, 14-30.

[5]   Imhansoloeva, N.A., Achebo, J.I., Obahiagbon, K.O., Osarenmwinda, J.O. and Etin-Osa, C.E. (2018) Optimization of the Deposition Rate of Tungsten Inert Gas Mild Steel Using Response Surface Methodology. Engineering, 10, 784-804.
http://www.scirp.org/journal/eng
https://doi.org/10.4236/eng.2018.1011055


[6]   The Sensor (2019).
https://www.sensornewsonline.com.ng/history-building-collapse-nigeria

[7]   Vanguard (2018).
https://www.vanguardngr.com/2018/12/building-collapse-31-persons-rescued-15-dead-says-nema

[8]   Withers, P.J., Turski, M., Edwards, L., Bouchard, P.J. and Buttle, D.J. (2008) Recent Advances in Residual Stress Measurement. International Journal of Pressure Vessels and Piping, 85, 118-127.
https://doi.org/10.1016/j.ijpvp.2007.10.007

[9]   Donato, G.H.B. and Magnabosco, R. (2014) Modeling and Characterization of Residual Stresses in Material Processing. Comprehensive Materials Processing: Materials Modeling and Characterization, 2, 219-233.
https://doi.org/10.1016/B978-0-08-096532-1.00218-1

[10]   Withers, P.J. and Bhadeshia, H.K.D.H. (2001) X Residual Stress: Part 1 Measurement Techniques. Materials Science and Technology, 17, 355-365.
https://doi.org/10.1179/026708301101509980

[11]   Withers, P.J. and Bhadeshia, H.K.D.H. (2001) Residual Stress: Part 2 Nature and Origins. Materials Science and Technology, 17, 366-375.
https://doi.org/10.1179/026708301101510087

[12]   Rossini, N.S., Dassisti, M., Benyounis, K.Y. and Olabi, A.G. (2012) Methods of Measuring Residual Stresses in Components. Materials and Design, 35, 572-588.
https://doi.org/10.1016/j.matdes.2011.08.022

[13]   Niku-Lari, A. (1983) Residual Stresses and Surface Finish in Shot-Peened Components and Materials. Experimental Techniques, 7, 31-37.
https://doi.org/10.1111/j.1747-1567.1983.tb01711.x

[14]   Etin-Osa, C.E., Achebo, J.I. and Obahiagbon, K.O. (2020) Design and Fabrication of Portable Weld Residual Stress Measuring Device Using MBN Principle. NIPES Journal of Science and Technology Research, 2, 70-84.
https://doi.org/10.37933/nipes/2.3.2020.8

[15]   Titto, K. (1987) Use of Barkhausen Effect in Testing for Residual Stresses and Material Defects. Proceedings of ASM’s Conference on Residual Stress in Design, Process, and Materials Selection, Cincinnati, 27-29 April 1987, 27-35.

[16]   Etin-Osa, D. and Etin-Osa, C.E. (2019) Forensic Science and the Nigerian Society. Journal of Nuclear Sciences, 6, 17-21.
http://jns.ankara.edu.tr

 
 
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