Effect of the Weld Joint Configuration on Stressed Components, Residual Stresses and Mechanical Properties

Bekir Çevik; Alpay Özer; Yusuf Özçatalbaş

doi:10.3139/120.110557

Article

Effect of the Weld Joint Configuration on Stressed Components, Residual Stresses and Mechanical Properties

, and

Published/Copyright: September 28, 2014

Published by

Become an author with De Gruyter Brill

Submit Manuscript Author Information

From the journal Materials Testing Volume 56 Issue 4

Abstract

The effect of the weld joint configuration on components has been studied, which are under service loads, under repair or construction and the residual stresses as well as the mechanical properties of the joint have been determined. For this purpose, a horizontal positioned tensile testing device and a semi-automatic MIG welding machine have been used and then the weld joints of the plates were subjected to different elastic stresses. When the temperature of the joined elements decreased to room temperature, applied elastic stresses were released. By this means, the effects of the existing tensile stresses in the joined parts and the tensile stresses created by the welding processes were investigated. The tensile stresses occurring in the joined elements were determined by using the photo-elasticity analysis method and the hole-drilling method. Also, tensile-shear tests were applied in order to determine the effect of permanent tensile loads on the mechanical properties of the joint. Experimental results showed that the application of corner welded lap joints for components under tensile loading significantly decrease the shear strength and yielding capacities of the joint.

Kurzfassung

Die Wirkung der Schweißstosskonfiguration wurde in der diesem Beitrag zugrunde liegenden Studie untersucht und zwar auf Komponenten, die unter Betriebsbeanspruchungen stehen oder Reparaturen unterworfen sind, darüberhinaus wurden die Eigenspannungen und mechanischen Eigenschaften dieser Verbindungen ermittelt. Zu diesem Zweck wurde eine horizontale Prüfmaschine und ein halbautomatischer WIG-Schweißprozess verwendet und somit die Schweißverbindung der entsprechenden Platten verschiedenen elastischen Spannungen unterworfen. Wenn die Temperatur der geschweißten Elemente auf Raumtemperatur abgefallen war, wurden die elastischen Spannungen freigesetzt. Auf diese Weise wurden die Wirkungen der existierenden Zugspannungen in den verbundenen Teilen sowie die Spannungen, die durch den Schweißprozess verursacht wurden, untersucht. Die Zugspannungen, die in den geschweißten Teilen auftraten, wurden mittels photo-eleastischer Analyse und dem Bohrlochverfahren ermittelt. Zudem wurden Zug-Scherversuche durchgeführt, um die Wirkung der permanenten Zugbeanspruchungen auf die mechanischen Eigenschaften der Verbindung zu bestimmen. Die experimentellen Ergebnisse zeigen, dass die Anwendung von Eck-Überlappverbindungen für Komponenten unter Zugbeanspruchung die Scherfestigkeit und das Dehnungsvermögen der Verbindung signifikant herabsetzt.

Keywords: Materials testing; welded joint; residual stress; photo-elasticity method; hole-drilling method

* Correspondence Address, Alpay Özer, Gazi University, Gazi Vocational School, 06760 Cubuk-Ankara, E-mail: aozer@gazi.edu.tr

Bekir Çevik was born 1983 in Bursa, Turkey. He received BS degree in Technical Education Faculty from Gazi University, in 2006 Ankara, Turkey. He received his MSc degree from Metallurgy Education Department of the Gazi University in 2009. In this year he has begun the doctorate education in the same area. Now he is studying on some projects about the doctorate thesis and continuing his studies about solid state welding process.

Alpay Özer was born 1975 in Gaziantep, Turkey. He received his PhD from Gazi University, Institute of Science and Technology, Ankara, Turkey, 2010. He has been working at Gazi University. His research interest is in materials science, mainly in the areas of residual stress.

Yusuf Özçatalbaş was born 1965 in Çorum, Turkey. He received his PhD from Gazi University, Institute of Science and Technology, Ankara, Turkey, 1996. He has been working as professor at Gazi University. His research interest is in materials science, mainly in the areas of powder metallurgy and residual stress.

References

1 D.Moratal: Finite Element Analysis, Sciyo, Chapters Published, Spain (2010), DOI: http://dx.doi.org/10.5772/58224Search in Google Scholar

2 W.Fricke: Effects of residual stresses on the fatigue behaviour of welded steel structures, Mat.-wiss. u. Werkstofftech.36 (2005), No. 11, pp. 642–649 DOI: http://dx.doi.org/10.1002/mawe.200500933Search in Google Scholar

3 M. S.Choobi, M.Haghpanahi, M.Sedighi: Investigation of the effect of clamping on residual stresses and distorsion in butt-welded plates, Scientia Iranica Transactions B: Mechanical Engineering17 (2010), pp. 387–394Search in Google Scholar

4 C.Heinze, C.Schwenk, M.Rethmeier: Numerical calculation of residual stress and development of multi-pass gas metal arc welding, Journal of Constructional Steel Research72 (2012), pp. 12–19 DOI: http://dx.doi.org/10.1016/j.jcsr.2011.08.011Search in Google Scholar

5 A. M.Korsunsky, G. M.Regino, D.Nowell: Variational eigenstrain analysis of residual stresses in a welded plate, International Journal of Solids and Structures44 (2007), pp. 4574–4591 DOI: http://dx.doi.org/10.1016/j.ijsolstr.2006.11.037Search in Google Scholar

6 H. N.Han, J. K.Lee, S. J.Kim: An observation of permanent strain during recrystallization and growth of steel under externally applied stress, Materials Letters59 (2005), pp. 158–161 DOI: http://dx.doi.org/10.1016/j.matlet.2004.07.030Search in Google Scholar

7 S. L.Smith, W. A.Wood: X-ray structure and elastic strain in copper, Proceedings of the Royal Society of London A: Mathematical and Physical Sciences176 (1940), pp. 398–411 DOI: http://dx.doi.org/10.1098/rspa.1940.0096Search in Google Scholar

8 Y.Ozcatalbaş, A.Ozer: Internally Prestressed Steel Beam, Patent Num. TR200400366, Turkey (2004)Search in Google Scholar

9 Y.Ozcatalbas, A.Ozer: Investigation of Fabrication and Mechanical Properties of Internally Prestressed Steel I Beam, Materials & Design28 (2007), No. 6, pp. 1988–1993 DOI: http://dx.doi.org/10.1016/j.matdes.2006.04.007Search in Google Scholar

10 A.Özer, Y.Özçatalbaş: Measuring the residual/permanent stresses by using hole drilling method and calibration of rosette strain-gauges, Journal of the Faculty of Engineering and Architecture of Gazi University26 (2011), No. 3, pp. 657–666Search in Google Scholar

11 B.Çevik; A.Özer; Y.Özçatalbaş: Analysis of stress generated in fillet welds by using photoelasticity method, Proc. of the 6^th International Advanced Technologies Symposium, Elazığ, Turkey (2011), pp. 409–414Search in Google Scholar

12 Vishay Tech-Note TN-701-1, Calibration of PhotoStress^® Coating; Malvern, USA (2009), pp. 1–6Search in Google Scholar

13 N.Özden: Heat Treatment of Welding, Nurettin Uycan Printing Industry, İstanbul, Turkey (1985)Search in Google Scholar

14 E. P.Popov: Introduction to Mechanics of Solids, Prentice-Hall of India Private Limited, New Delhi, India (1976)ISBN 0-13-571356-0Search in Google Scholar

15 S. P.Timoshenko, M. J.Gere: Mechanics of Materials, D. Van Nostrand Company, New York, USA (1972)ISBN 0442226373Search in Google Scholar

16 ASTM E 837-01: Standard Test Method for Determining Residual Stress by the Hole Drilling Strain Gage Method, ASTM International, USA (2002) DOI: http://dx.doi.org/10.1520/E0837Search in Google Scholar

Published Online: 2014-09-28

Published in Print: 2014-04-01

You are currently not able to access this content.

Articles in the same Issue

https://doi.org/10.3139/120.110557

Keywords for this article

Materials testing; welded joint; residual stress; photo-elasticity method; hole-drilling method