Research Article
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Year 2023, , 278 - 285, 29.09.2023
https://doi.org/10.54287/gujsa.1284239

Abstract

References

  • ASTM, American Society for Testing and Materials. (2015) Standard Test Methods for Tension Testing of Metallic Materials (ASTM E8/E8M-13a). ASTM International. doi:10.1520/E0008_E0008M-13A
  • Cerit, M., Kokumer, O., & Genel, K. (2010) Stress concentration effects of undercut defect and reinforcement metal in butt welded joint. Engineering Failure Analysis, 17(2), 571-578. doi:10.1016/j.engfailanal.2009.10.010,
  • Frostevarg, J., & Kaplan, A. F. H. (2014) Undercuts in laser arc hybrid welding. Physics Procedia, 56, 663-672. doi:10.1016/j.phpro.2014.08.071
  • Gill, J., & Singh, J. (2012) Effect of welding speed and heat input rate on stress concentration factor of butt welded joint of IS 2062 E 250 A steel. International Journal of Advanced Engineering Research and Studies, 1(3), 98-100.
  • Hou, W., Zhang, D., Wei, Y., Guo, J., & Zhang, X. (2020) Review on computer aided weld defect detection from radiography images. Applied Sciences, 10(5), 1878. doi:10.3390/app10051878
  • Hu, Y., Xue, J., Dong, C., Jin, L., & Zhang, Z. (2018) Effect of additional shielding gas on welding seam formation during twin wire DP-MIG high-speed welding. Applied Science, 8(9), 1658. doi:10.3390/app8091658
  • Juvinall, R. C., & Marshek, K. M. (1991). Fundamentals of Machine Component Design (2nd ed.). John Wiley and Sons, New York, USA.
  • Kiraz, A., Erkan, E. F., Canpolat, O., & Kökümer, O. (2023) Prediction of Stress Concentration Factor in Butt Welding Joints Using Artificial Neural Networks. International Journal of Research in Industrial Engineering, 12(1), 43-52. doi:10.22105/riej.2023.349647.1322
  • Kurtulmuş, M., & Doğan, E. (2021) The effects of undercut geometry on the static stress concentration factor of welds. Emerging Materials Research, 10(3), 272-277. doi:10.1680/jemmr.20.00100
  • Liinalampi, S., & Remes, H., & Romanoff, J. (2019) Influence of three-dimensional weld undercut geometry on fatigue-effective stress. Welding in the World, 63(2), 277-291. doi:10.1007/s40194-018-0658-7
  • Meng, X., Qin, G., & Zou, Z. (2017) Sensitivity of driving forces on molten pool behavior and defect formation in high-speed gas tungsten arc welding. International Journal of Heat and Mass Transfer, 107, 1119-1128. doi:10.1016/j.ijheatmasstransfer.2016.11.025
  • Molski, K. L., & Tarasiuk, P. (2020) Stress Concentration Factors for Butt-Welded Plates Subjected to Tensile, Bending and Shearing Loads. Materials, 13(8), 1798. doi:10.3390/ma13081798
  • Ottersböck, M. J., Leitner, M., & Stoschka, M. (2021) Characterisation of actual weld geometry and stress concentration of butt welds exhibiting local undercuts. Engineering Structures, 240, 112266. doi:10.1016/j.engstruct.2021.112266
  • Zong, R., Chen, J., Wu, C., & Chen, M. (2016) Undercutting formation mechanism in gas metal arc welding. Welding Journal, 95, 174-184.

The Effects of Undercut Depth and Length on Weldment Mechanical Properties

Year 2023, , 278 - 285, 29.09.2023
https://doi.org/10.54287/gujsa.1284239

Abstract

Undercutting is a fusion welding defect that appears as a groove at the weld metal's toe. An undercut discontinuity forms when welding, particularly when the current is applied at an extremely rapid rate. It decreases the static and fatigue strength of the weld and produces stress concentration at the welding zone. The height of the reinforcement, the weld bead's contact angle, the undercut's breadth, depth, length, and root radius, as well as other factors, affect the stress concentration factor's size. In this study, two mild steel plates with a 20 mm thickness were welded together using gas metal arc welding. Each test plate was machined to have a 30° single bevel groove angle prior to welding. The butt welded plate underwent radiographic NDT testing. A weldment free of defect was created. The weldment was machined into typical test specimens for tensile strength. An undercut defect was simulated by drilling a groove through each tensile test sample. Grooves had different depths and lengths. After that, samples were put through a tensile test. The test findings allowed for the identification of the impacts of groove shape on tensile strength, ductility, and static stress concentration factor.

References

  • ASTM, American Society for Testing and Materials. (2015) Standard Test Methods for Tension Testing of Metallic Materials (ASTM E8/E8M-13a). ASTM International. doi:10.1520/E0008_E0008M-13A
  • Cerit, M., Kokumer, O., & Genel, K. (2010) Stress concentration effects of undercut defect and reinforcement metal in butt welded joint. Engineering Failure Analysis, 17(2), 571-578. doi:10.1016/j.engfailanal.2009.10.010,
  • Frostevarg, J., & Kaplan, A. F. H. (2014) Undercuts in laser arc hybrid welding. Physics Procedia, 56, 663-672. doi:10.1016/j.phpro.2014.08.071
  • Gill, J., & Singh, J. (2012) Effect of welding speed and heat input rate on stress concentration factor of butt welded joint of IS 2062 E 250 A steel. International Journal of Advanced Engineering Research and Studies, 1(3), 98-100.
  • Hou, W., Zhang, D., Wei, Y., Guo, J., & Zhang, X. (2020) Review on computer aided weld defect detection from radiography images. Applied Sciences, 10(5), 1878. doi:10.3390/app10051878
  • Hu, Y., Xue, J., Dong, C., Jin, L., & Zhang, Z. (2018) Effect of additional shielding gas on welding seam formation during twin wire DP-MIG high-speed welding. Applied Science, 8(9), 1658. doi:10.3390/app8091658
  • Juvinall, R. C., & Marshek, K. M. (1991). Fundamentals of Machine Component Design (2nd ed.). John Wiley and Sons, New York, USA.
  • Kiraz, A., Erkan, E. F., Canpolat, O., & Kökümer, O. (2023) Prediction of Stress Concentration Factor in Butt Welding Joints Using Artificial Neural Networks. International Journal of Research in Industrial Engineering, 12(1), 43-52. doi:10.22105/riej.2023.349647.1322
  • Kurtulmuş, M., & Doğan, E. (2021) The effects of undercut geometry on the static stress concentration factor of welds. Emerging Materials Research, 10(3), 272-277. doi:10.1680/jemmr.20.00100
  • Liinalampi, S., & Remes, H., & Romanoff, J. (2019) Influence of three-dimensional weld undercut geometry on fatigue-effective stress. Welding in the World, 63(2), 277-291. doi:10.1007/s40194-018-0658-7
  • Meng, X., Qin, G., & Zou, Z. (2017) Sensitivity of driving forces on molten pool behavior and defect formation in high-speed gas tungsten arc welding. International Journal of Heat and Mass Transfer, 107, 1119-1128. doi:10.1016/j.ijheatmasstransfer.2016.11.025
  • Molski, K. L., & Tarasiuk, P. (2020) Stress Concentration Factors for Butt-Welded Plates Subjected to Tensile, Bending and Shearing Loads. Materials, 13(8), 1798. doi:10.3390/ma13081798
  • Ottersböck, M. J., Leitner, M., & Stoschka, M. (2021) Characterisation of actual weld geometry and stress concentration of butt welds exhibiting local undercuts. Engineering Structures, 240, 112266. doi:10.1016/j.engstruct.2021.112266
  • Zong, R., Chen, J., Wu, C., & Chen, M. (2016) Undercutting formation mechanism in gas metal arc welding. Welding Journal, 95, 174-184.
There are 14 citations in total.

Details

Primary Language English
Subjects Machine Design and Machine Equipment
Journal Section Mechanical Engineering
Authors

Memduh Kurtulmuş 0000-0001-6525-232X

Early Pub Date September 7, 2023
Publication Date September 29, 2023
Submission Date April 16, 2023
Published in Issue Year 2023

Cite

APA Kurtulmuş, M. (2023). The Effects of Undercut Depth and Length on Weldment Mechanical Properties. Gazi University Journal of Science Part A: Engineering and Innovation, 10(3), 278-285. https://doi.org/10.54287/gujsa.1284239