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Influence of welding conditions on crack opening displacements in welded CT specimens

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Veröffentlicht/Copyright: 10. Juli 2017
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Materials Testing
Aus der Zeitschrift Materials Testing Band 59 Heft 7-8

Abstract

To investigate the effect of weld induced residual stresses on the crack performance, standard compact tension specimens were cut into two pieces, then joined to form welded specimens under various welding conditions. The crack opening displacement was measured by digital image correlation technique. It is found that specimens welded in the opposite direction show smaller crack opening displacement than those welded in the same direction. The crack opening displacement decreased as the distance from the crack tip to the center of weld line was increased from 8 mm to 30 mm. The crack opening displacement of the specimens with 30-minute time interval was lower than that of the specimens without interval, regardless of welding directions.

Kurzfassung

Um den Effekt der Schweißeigenspannungen auf den Rissverlauf zu untersuchen, wurden Standard-Kompaktzug-Proben in zwei Teile geschnitten und anschließend verbunden, um mit verschiedenen Parametern geschweißte Proben zu erhalten. Die COD-Werte wurden mittels digitaler Bilderfassung gemessen. Es stellte sich heraus, dass die Proben, die in gegensätzlicher Richtung geschweißt wurden, kleinere COD-Werte aufwiesen, als die Proben, die in gleicher Richtung geschweißt wurden. Die COD-Werte nahmen ab, wenn die Entfernung der Rissspitze von der Schweißnahtmitte von 8 mm auf 30 mm erhöht wurde. Der COD-Wert der Proben, die mit einem Zeitintervall von 30 Minuten geschweißt wurden, war niedriger als der der ohne Zeitintervall hergestellten Proben, unabhängig von der Schweißrichtung.

*Correspondence Address, Prof. Dr. Wei Jiang, School of Mechanical Engineering, Dalian University of Technology, Dalian, P. R. China, E-mail:

Prof. Dr. Wei Jiang, born in 1966, is Professor at Dalian University of Technology in Dalian, China, specialized in multidisciplinary simulation and optimization of design and manufacturing processes, strength and failure analysis of mechanical products.

Xianfeng Jiang, born in 1991, is a graduate student at Dalian University of Technology, China, majoring in experimental research on crack growth behavior

Yulong Huang, born in 1988, is a graduate student at Dalian University of Technology, China, majoring in crack characteristics of steel structure.

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Published Online: 2017-07-10
Published in Print: 2017-07-14

© 2017, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Micro-CT defect analysis and hardness distribution of flat-face extruded EN AW6060 aluminum chips
  5. Confirmation of tensile residual stress reduction in electron beam welding using low transformation temperature materials (LTT) as localized metallurgical injections – Part 2: Residual stress measurement
  6. Distribution functions for the linear region of the S-N curve
  7. Uncertainty of strain release coefficients for the blind-hole procedure evaluated by Monte Carlo simulation
  8. Influence of welding conditions on crack opening displacements in welded CT specimens
  9. Microstructure characterization and corrosion testing of MAG pulsed duplex stainless steel welds
  10. Conventional sintering behavior of matrix materials used for diamond beads
  11. Acoustic emission by steel fiber reinforced concrete under tensile damage
  12. Investigations on multi-run metal made of HSLA steel – Heterogeneous microstructure and mechanical properties
  13. Design of utility tools and their application for testing mechanical properties of metallic materials
  14. Improvement of the sacrificial behavior of zinc in scratches of zinc-rich polymer coatings by incorporating clay nanosheets
  15. Influence of geometric design variables on the efficiency of the high energy horizontal chromite type ball milling process
  16. ANN evaluation of bearing strength on pin loaded composite plates in different environmental conditions
  17. Tribomechanical behavior of TiCN/TiAlN/WC-C multilayer film on cutting tool inserts for machining
  18. Preparation and mechanical properties of nano-quartz fiber filled PMMA composites
https://doi.org/10.3139/120.111055

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Micro-CT defect analysis and hardness distribution of flat-face extruded EN AW6060 aluminum chips
  5. Confirmation of tensile residual stress reduction in electron beam welding using low transformation temperature materials (LTT) as localized metallurgical injections – Part 2: Residual stress measurement
  6. Distribution functions for the linear region of the S-N curve
  7. Uncertainty of strain release coefficients for the blind-hole procedure evaluated by Monte Carlo simulation
  8. Influence of welding conditions on crack opening displacements in welded CT specimens
  9. Microstructure characterization and corrosion testing of MAG pulsed duplex stainless steel welds
  10. Conventional sintering behavior of matrix materials used for diamond beads
  11. Acoustic emission by steel fiber reinforced concrete under tensile damage
  12. Investigations on multi-run metal made of HSLA steel – Heterogeneous microstructure and mechanical properties
  13. Design of utility tools and their application for testing mechanical properties of metallic materials
  14. Improvement of the sacrificial behavior of zinc in scratches of zinc-rich polymer coatings by incorporating clay nanosheets
  15. Influence of geometric design variables on the efficiency of the high energy horizontal chromite type ball milling process
  16. ANN evaluation of bearing strength on pin loaded composite plates in different environmental conditions
  17. Tribomechanical behavior of TiCN/TiAlN/WC-C multilayer film on cutting tool inserts for machining
  18. Preparation and mechanical properties of nano-quartz fiber filled PMMA composites
Heruntergeladen am 14.4.2026 von https://www.degruyterbrill.com/document/doi/10.3139/120.111055/html
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