Vol. 17, No. 1, pp. 20-27 (2021)
FATIGUE PROPERTIES OF INCLINED CRUCIFORM WELDED JOINTS
WITH ARTIFICIAL PITS
Zhi-Yu Jie 1, *, Wu-Jun Wang 1, Ping Zhuge 1, Ya-Dong Li 2 and Xing Wei 2
1 Department of Civil Engineering, Ningbo University, Ningbo 315211, China
2 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 27 March 2020; Revised: 2 October 2020; Accepted: 12 October 2020
DOI:10.18057/IJASC.2021.17.1.3
 View Article |
Export Citation: Plain Text | RIS | Endnote |
ABSTRACT
Experimental and numerical investigations on the fatigue properties of inclined corroded cruciform joints were conducted in this paper. Two artificial hemispherical notches were used to simulate pitting corrosion damage. Fatigue tests were carried out under uniaxial tensile cyclic loading. The fatigue S-N curves considering different types of corrosion damage were fitted by regression analysis. A relative hot spot stress concentration factor (HSSCF) concept was proposed. The influence of the pit size on the relative HSSCF of the cruciform joints was analyzed based on a numerical analysis. The fatigue notch factor (FNF), which considered the effect of corrosion pits, was used to describe the fatigue strength reduction. The FNF method and the Theory of Critical Distances (TCD) were employed to predict the fatigue life of corroded cruciform joints. It is concluded that pitting corrosion damage reduces the fatigue strength, but specimens without and with smaller corrosion pits exhibited similar fatigue strengths at 2 million cycles. The pit depth and radius are the main parameters affecting the relative HSSCFs, and an equation as a function of the pit depth and radius is obtained. The predicted S-N equations correlate well with the experimental results. The maximum error of the fatigue life calculation results based on these two methods is only -27.8%. They can be used to predict the fatigue life of corroded cruciform joints.
KEYWORDS
Inclined cruciform joints, Corrosion pits, Hot spot stress concentration factor, Fatigue notch factor, Fatigue life
REFERENCES
[1] Li F. M., Luo X. Y. and Wang K. J. et al., "Pitting Damage Characteristics on Prestressing Steel Strands by Combined Action of Fatigue Load and Chloride Corrosion", Journal of Bridge Engineering, 2017, Vol.22, No.7, pp.4017023.
[2] Larrosa N. O., Akid R. and Ainsworth R. A., "Corrosion-Fatigue: A Review of Damage Tolerance Models", International Materials Reviews, 2018, Vol.63, No.5, pp.283-308.
[3] Kim I. and Kainuma S., "Fatigue Life Assessment of Load-Carrying Fillet-Welded Cruciform Joints Inclined to Uniaxial Cyclic Loading", International Journal of Pressure Vessels and Piping, 2005, Vol.82, No.11, pp.807-813.
[4] Wang Z. Y. and Wang Q. Y., "Fatigue Assessment of Welds Joining Corrugated Steel Webs to Flange Plates", Engineering Structures, 2014, Vol.73, pp.1-12.
[5] Khurshid M., Barsoum Z. and Barsoum I. et al., "The Multiaxial Weld Root Fatigue of Butt Welded Joints Subjected to Uniaxial Loading", Fatigue & Fracture of Engineering Materials & Structures, 2016, Vol.39, No.10, pp.1281-1298.
[6] Susmel L., "Nominal Stresses and Modified Wöhler Curve Method To Perform The Fatigue Assessment of Uniaxially Loaded Inclined Welds", Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014, Vol.228, No.16, pp.2871-2880.
[7] Zamzami I. A. and Susmel L., "On the Use of Hot-Spot Stresses, Effective Notch Stresses and the Point Method to Estimate Lifetime of Inclined Welds Subjected to Uniaxial Fatigue Loading", International Journal of Fatigue, 2018, Vol.117, pp.432-449.
[8] Hobbacher A., "Recommendations for Fatigue Design of Welded Joints and Components", Welding Research Council, 2009.
[9] Eurocode 3: "Design of Steel Structures Part 1-9: Fatigue", 2005.
[10] Det Norske Veritas, "Fatigue Design of Offshore Steel Structures", 2010.
[11] Righiniotis T. D. and Imam B. M., Chryssanthopoulos M. K., "Fatigue Analysis of Riveted Railway Bridge Connections Using the Theory of Critical Distances", Engineering Structures, 2008, Vol.30, No.10, pp.2707-2715.
[12] Shahri M. M., Sandström R., and Osikowicz W., "Critical Distance Method to Estimate the Fatigue Life Time of Friction Stir Welded Profiles", International Journal of Fatigue, 2012, Vol.37, pp.60-68.
[13] Zhou H., Wen J. and Wang Z. et al., "Fatigue Crack Initiation Prediction of Cope Hole Details in Orthotropic Steel Deck Using the Theory of Critical Distances", Fatigue & Fracture of Engineering Materials & Structures, 2016, Vol.39, No.9, pp.1051-1066.
[14] Al Zamzami I. and Susmel L., "On The Accuracy of Nominal, Structural, and Local Stress Based Approaches in Designing Aluminium Welded Joints Against Fatigue", International Journal of Fatigue, 2017, Vol.101, pp.137-158.
[15] Karakaş Ö., Zhang G. and Sonsino C. M., "Critical Distance Approach for The Fatigue Strength Assessment of Magnesium Welded Joints in Contrast to Neuber's Effective Stress Method", International Journal of Fatigue, 2018, Vol.112, pp.21-35.
[16] Al Zamzami I., Davison B. and Susmel L., "Nominal and Local Stress Quantities to Design Aluminium-to-Steel Thin Welded Joints against Fatigue", International Journal of Fatigue, 2019, Vol.123, pp.279-295.
[17] Soape J., "Investigating the Effects of Corrosion on the Fatigue Life of Welded Steel Attachments", Texas A&M University, College Station, US, 2012.
[18] Yang S., Yang H. and Liu G. et al., "Approach for Fatigue Damage Assessment of Welded Structure Considering Coupling Effect Between Stress and Corrosion", International Journal of Fatigue, 2016, Vol.88, pp.88-95.
[19] Fu Y., Xiong J. J. and Shenoi R. A., "New Models for Depicting Corrosion Fatigue Behaviour and Calendar Life of Metallic Structural Component", Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017, Vol.231, No.2, pp.207-222.
[20] Xu S. H., Ren S. B. and Wang Y. D., "Effects of Pitting Corrosion on the Fatigue Behavior of Q235 Steel", Journal of Harbin Institute of Technology (New Series), 2017, Vol.24, No.1, pp.81-90. (in Chinese)
[21] Albrecht P., Shabshab C. F., and Li W. et al., "Remaining Fatigue Strength of Corroded Steel Beams", 1990.
[22] Cerit M., Genel K. and Eksi S., "Numerical Investigation on Stress Concentration of Corrosion Pit", Engineering Failure Analysis, 2009, Vol.16, No.7, pp.2467-2472.
[23] Kolios A., Srikanth S. and Salonitis K., "Numerical Simulation of Material Strength Deterioration due to Pitting Corrosion", Procedia CIRP, 2014, Vol.13, pp.230-236.
[24] Liu G., Huang Y. and Zhang Q. et al., "Fatigue Damage Estimation of Welded Joints Considering Mechanochemical Interaction", 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway, 2017.
[25] Bray G. H., Bucci R. J. and Colvin E. L. et al., "Effect Of Prior Corrosion on the S/N Fatigue Performance of Aluminum Sheet Alloys 2024-T3 and 2524-T3", ASTM International, 1997, pp.89-103.
[26] Dicecco S., Altenhof W. and Hu H. et al., "High-Cycle Fatigue of High-Strength Low Alloy Steel Q345 Subjected to Immersion Corrosion for Mining Wheel Applications", Journal of Materials Engineering and Performance, 2017, Vol.26, No.4, pp.1758-1768.
[27] Sharifi Y., Rahgozar R., "Fatigue Notch Factor in Steel Bridges Due to Corrosion", Archives of Civil and Mechanical Engineering, 2009, Vol.9, No.4, pp.75-83.
[28] Ma Y. F., Wang Q. and Guo Z. Z. et al., "Static and Fatigue Behavior Investigation of Artificial Notched Steel Reinforcement", Materials, 2017, Vol.10, No.5, pp.532-545.
[29] Li S. B., Tang H. W. and Gui Q. et al., "Fatigue Behavior of Naturally Corroded Plain Reinforcing Bars", Construction and Building Materials, 2017, Vol.152, pp.933-942.
[30] Adasooriya N. D. and Siriwardane S. C., "Remaining Fatigue Life Estimation of Corroded Bridge Members", Fatigue & Fracture of Engineering Materials & Structures, 2014, Vol.37, No.6, pp.603-622.
[31] Adasooriya N. D., Hemmingsen T. and Pavlou D., "Fatigue Strength Degradation of Metals in Corrosive Environments", IOP Conference Series: Materials Science and Engineering, Norway, 2017.
[32] Sun B., "A Continuum Model for Damage Evolution Simulation of The High Strength Bridge Wires due to Corrosion Fatigue", Journal of Constructional Steel Research, 2018, Vol.146, pp.76-83.
[33] Adasooriya N. D., Pavlou D. and Hemmingsen T., "Fatigue Strength Degradation of Corroded Structural Details: a Formula for S-N Curve", Fatigue & Fracture of Engineering Materials & Structures, 2020, Vol.43, No.4, pp.721-733.
[34] GB/T 714-2015. "Structural Steel for Bridge", 2015. (in Chinese)
[35] Cao C. N., "Corrosion in Natural Environment of Materials in China", Chemical Industry Press, Beijing, China, 2005. (in Chinese)
[36] Jakubowski M., "Influence of Pitting Corrosion on Fatigue and Corrosion Fatigue of Ship Structures Part I Pitting Corrosion of Ship Structures", Polish Maritime Research, 2013, Vol.21, No.1, pp.62-69.
[37] Jie Z. Y., Li Y. D. and Wei X. et al., "Fatigue Life Prediction of Welded Joints with Artificial Corrosion Pits Based on Continuum Damage Mechanics", Journal of Constructional Steel Research, 2018, Vol.148, pp.542-550.
[38] Susmel L., "Multiaxial Notch Fatigue: from Nominal to Local Stress-Strain Quantities", Woodhead & CRC, Cambridge, UK, 2009.
[39] Louks R. and Susmel L., "The Linear-Elastic Theory of Critical Distances to Estimate High-Cycle Fatigue Strength of Notched Metallic Materials at Elevated Temperatures", Fatigue & Fracture of Engineering Materials & Structures, 2015, Vol.38, No.6, pp.629-640.
[40] Li H., Zhao B. and Zhu H., "Numerical Simulation of Fatigue Performance of Diaphragm of Large-Span Bridge Orthotropic Deck", Complexity, 2018.