Comparing the dynamic response of bead-on-plate and butt-welded plates

  • Vanessa Bawden de Paula MacanhanEmail author
  • Edmilson Otoni Correa
  • José Tadeu da Silva
Technical Paper


Some studies have been developed to demonstrate that welded plates have their natural frequencies reduced when comparing them to non-welded similar plates, which is caused by welding residual stress. This phenomenon can be used to develop a new welding residual stress detection method. This new method, analyzing the plate vibrational responses, would have the advantage of being nondestructive, when comparing to hole drilling, and simpler and cheaper than X-ray diffraction, ultrasound and neutron diffraction methods. Therefore, in the search of this new technique, more research is being developed and more progress is still required. Some experimental work in the field has used bead-on-plate weldments for data analysis. However, this work demonstrates that bead-on-plate weldments do not present the same vibrational responses due to welding residual stress than butt-welded plates. This experimental work compares the vibrational responses of two identical plates welded by two different manners: bead-on-plate and butt-welded. Two stainless steel AISI 316L plates, with 302 × 150.5 × 6.30 mm, were tested. First, the entire plates had their natural frequencies measured, using a laser vibrometer. Then, one plate was Gas Tungsten Arc welded bead-on-plate on its center. The other plate was wire Electrical Discharge Machining cut in its center and then butt-welded. There was no material addition, in order to avoid additional mass interference in the natural frequencies values. Finally, the natural frequencies were measured again and the variations were calculated for the first six vibrational modes. Even though it was employed the same heat inputs and welding parameters in both welds, it is shown that the butt weld had higher modal variations than the bead-on-plate. The higher modal variations in the butt-welded plate indicate that butt weld induced higher welding residual stresses in the plates than bead-on-plate. Therefore, this work demonstrates that researchers willing to advance in the studies about the new welding residual stress method using vibrational responses should be attentive to this disparity.


Dynamic analysis Natural frequency Welding residual stress Bead-on-plate welding Butt welding 



V.B.P. Macanhan is grateful to National Council for Scientific and Technological Development—CNPq [Grant numbers 310071/2014-3 and 303541/2017-2].


  1. 1.
    Kaldas MM, Dickinson SM (1981) Vibration and buckling calculations for rectangular plates subject to complicated in-plane stress distributions by using numerical integration in a Rayleigh–Ritz analysis. J Sound Vib 75(2):151–162CrossRefGoogle Scholar
  2. 2.
    Kaldas MM, Dickinson SM (1981) The flexural vibration of welded rectangular plates. J Sound Vib 75(2):163–178CrossRefGoogle Scholar
  3. 3.
    Vieira AB, Jr, Rade DA, Cunha SS, Jr (2002) Avaliação experimental da influência das tensões residuais sobre as respostas dinâmicas de placas soldadas. In: Proceedings of CONEM2002. João Pessoa, BrazilGoogle Scholar
  4. 4.
    Kou S (2003) Welding metallurgy. Wiley, New YorkGoogle Scholar
  5. 5.
    Bezerra AC (2006) Simulação numérica de soldagem com aplicação à caracterização do comportamento dinâmico de estruturas soldadas. Thesis, Universidade Federal de Uberlândia, BrazilGoogle Scholar
  6. 6.
    Macanhan VBP (2016) Análise da variação das respostas dinâmicas em placas retangulares delgadas soldadas. Thesis, Universidade Federal de Itajubá, BrazilGoogle Scholar
  7. 7.
    Charette O (2011) Effet des contraintes résiduelles sur les parametres modaux dans les structures soudées. Dissertation, École de Technologie Supérieure, Université du Quebec, CanadaGoogle Scholar
  8. 8.
    Bryan JJ (1973) Analysis of two dimensional thermal strains and metal movement during welding. Dissertation, Massachusetts Institute Technology, USAGoogle Scholar
  9. 9.
    Marques PV, Modenesi PJ (2014) Algumas equações úteis em soldagem. Soldag Insp 19(1):91–102CrossRefGoogle Scholar

Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  1. 1.LNA – Laboratório Nacional de AstrofísicaItajubáBrazil
  2. 2.UNIFEI – Universidade Federal de ItajubáItajubáBrazil

Personalised recommendations