Advanced Search  
JWJ > Volume 27(6); 2009 > Article
Journal of KWJS 2009 December;27(6) :31-35.
Published online January 13, 2010.
Redistributions of Welding Residual Stress for CTOD Specimen by Local Compression
Sung-Min Joo, Byung-Hyun Yoon, Woong-Seong Chang, Han-Sur Bang, Hee-Seon Bang, Chan-Seung Ro





Correspondence:   Published online January 13, 2010
ABSTRACT
  When conducting CTOD test, especially in thick welded steel plate, fatigue pre-cracking occasionally failed to satisfy the requirements of standards thus making the test result invalid.
  Internally accumulated residual stress of test piece has been thought as one of the main reasons.
  The propagation of fatigue crack, started from the tip of machined notch, which might have propagated irregularly due to residual stress field.
  To overcome this kind of difficulty three methods to modify the residual stress are suggested in standard i.e. local compression, reverse bending and stepwise high-R ratio method.
  In this paper not only multi pass welding but also local pre-compressing process of thick steel plate has been simulated using finite element method for clarifying variation of internal welding residual stress.
  The simulated results show that welding residual stress is compressive in the middle section of the model and it is predominantly increased after machining the specimen. Comparing as-welded state all component of the welding residual stress changing to compressive in the tip of machine notch whereas residual stress of the outer area remain as tensile condition relatively. Analysis results also show that this irregular residual stress distribution is improved to be more uniformly by applying local compression.
Keywords: CTOD;FEM;local compression;pre-crack;welding residual stress
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
CrossRef TDM  CrossRef TDM
  E-Mail
Share:      
METRICS
822
View
0
Download
Related articles
A Review on Welding Residual Stress Measurement by Hole Drilling Technique and its Importance  2018 August;36(4)
Characteristic and Measurement Technology of Inner Welding Residual Stresses in Thick Steel Structures  2016 April;34(2)
Effect of Weld Residual Stress on Fatigue Analysis of Nozzle  2014 February;32(1)
Recent Study in Variation of Welding Materials for Overlay Welding  2013 December;31(6)
Numerical Analysis of Welding Residual Stresses for Ultra-thick Plate of EH40 TM and API 2W Gr.50 Steel Joined by Flux Core Arc Welding  2010 June;28(3)
A Review on Welding Residual Stress Measurement by Hole Drilling Technique and its Importance  2018 August;36(4)
Characteristic and Measurement Technology of Inner Welding Residual Stresses in Thick Steel Structures  2016 April;34(2)
Effect of Weld Residual Stress on Fatigue Analysis of Nozzle  2014 February;32(1)
Recent Study in Variation of Welding Materials for Overlay Welding  2013 December;31(6)
Numerical Analysis of Welding Residual Stresses for Ultra-thick Plate of EH40 TM and API 2W Gr.50 Steel Joined by Flux Core Arc Welding  2010 June;28(3)
e-sciencecentral
Register for e-submission
Register here to access the e-submission system of Journal of KWJS for authors and reviewers.
Manuscript Submission
To submit a manuscript, please visit the Journal of KWJS e-submission management system at http://submit.e-jwj.org, read the Instructions for Authors, and log into the Journal of KWJS e-submission system. For assistance with manuscript submission, please contact: koweld@kwjs.or.kr.
Free archive
Anyone may access any past or current articles without logging in.
Editorial Office
The Korea Science and Technology Building, New B/D, Room 503
Teheran-ro 7-gil, 22(635-4, Yeoksam-Dong), Gangnam-gu, Seoul 06130, Korea
TEL : +82-2-538-6511    FAX : +82-2-538-6510   E-mail: koweld@kwjs.or.kr
Browse Articles |  Current Issue |  For Authors and Reviewers |  About
Copyright© by The Korean Welding and Joining Society. All right reserved.