Study on FCG of EH36 and EH690 Dissimilar Steel Welded Joints Based on the RA - AF Method of acoustic emission

Yi Zhao; Jian Shi; Xingping Hou

doi:10.54097/hyfm6h95

Authors

Yi Zhao
Jian Shi
Xingping Hou

DOI:

https://doi.org/10.54097/hyfm6h95

Keywords:

Crack propagation; Acoustic emission; RA-AF correlation analysis; Transition point.

Abstract

This study investigates fatigue crack growth(FCG) in EH36/EH690 dissimilar steel welded joints using acoustic emission (AE) technology. Three specimen types EH36-HAZ, EH690-HAZ, and weld metal(WS) were subjected to fatigue testing under different stress ratios (R=0.1, 0.3 and 0.5) using compact tension (CT) specimens. AE characteristic parameters, including cumulative energy, RA value (Risetime/Amplitude), and AF value (Average Frequency), in conjunction with RA-AF correlation analysis, were employed to elucidate crack propagation mechanisms. The results indicate thatFatigue life of all specimens significantly improves as the R increases, while crack growth rate (da/dN) demonstrates an exponential increase with the rise in stress intensity factor amplitude (ΔK). AE cumulative energy analysis successfully identifies two substages (IIa and IIb) within the stable crack growth phase by detecting variations in the slope. The transition point ΔK decreases with higher R while maintaining material-dependent hierarchy (EH690-HAZ > WS> EH36-HAZ).RA-AF analysis demonstrates a maximum 10% decrease in the proportion of shear cracks as the R increases, suggesting that crack growth is predominantly tensile under high stress conditions. The activation of material defects can lead to a transition from pure tensile fracture modes to mixed tensile-shear fracture modes.

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References

[1] MoLin Su, WenCai Liu, HongQiao Yan, et al. Investigation of tensile, fatigue crack growth behavior and prediction model of EH36 welded joints[J]. Journal of Materials Research and Technology,35,2025,3512-3522.

[2] Xinkang Shen, Xudong Gao, Yongbo Shao, et al. Investigation on the fatigue crack growth behavior of welded joints in EH690 high-strength marine steel[J]. International Journal of Fatigue,189,2024,108572.

[3] VUHERER T, DUNĐER M, MILOVIĆ L, et al. Microstructural investigation of the heat-affected zone of simulated welded joint of P91 steel [J]. Metalurgija, 2013, 52(3).

[4] TAN L, ANDERSON M, TAYLOR D, et al. Corrosion of austenitic and ferritic-martensitic steelsexposed to supercritical carbon dioxide [J]. Corrosion Science, 2011, 53(10).

[5] E. Amsterdam, J.W.E. Wiegman, M. Nawijn, et al. The effect of crack length and maximum stress on the fatigue crack growth rates of engineering alloys[J]. International Journal of Fatigue,161,2022,106919.

[6] Santos D L J I, França E J, Santos M F L, et al. Allocation of performance shaping factors in the risk assessment of an offshore installation[J]. Journal of Loss Prevention in the Process Industries, 2020, 64: 104085-104085.

[7] Sulochana Shrestha, Manigandan Kannan, Gregory N. Morscher, et al. In-situ fatigue life analysis by modal acoustic emission, direct current potential drop and digital image correlation for steel[J]. International Journal of Fatigue, 142, 2021, 105924.

[8] Xianhui Feng, Huilin Liu, Xu Chen, et al. Acoustic emission characteristics and cracking mechanism analysis of anisotropic shale containing a circular hole under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics,135,2025,104771.

[9] Dazhong Zhang, Shiyi Zhang, SM Chayan, et al. Time-frequency characterization of acoustic emission signals from bending damage of corroded reinforced concrete beams in high- temperature saline environment[J]. Case Studies in Construction Materials,22,2025,e04237.

[10] Xing-Yuan Jiang, Di Wu, Zhen-Xian Zhao, et al. Experimental and numerical study on the damage evolution and acoustic emission multi-parameter responses of single flaw sandstone under uniaxial compression,[J]. Theoretical and Applied Fracture Mechanics,133, Part A,2024,104535.

[11] Kai-De Liu, Yu Zhou, Xiao-Ping Zhang, et al. Study on mechanical properties and acoustic emission characteristics of deep diorite under uniaxial compression[J]. Heliyon,10, Issue 2,2024,e24482.

[12] Jingmang Xu, Kai Wang, Qiantao Ma, et al. Study on acoustic emission properties and crack growth rate identification of rail steels under different fatigue loading conditions[J]. International Journal of Fatigue,172,2023,107638.

[13] eza Mohammadi, Mehdi Ahmadi Najafabadi, Hamed Saghafi, et al. The effect of mode II fatigue crack growth rate on the fractographic features of CFRP composite laminates: An acoustic emission and scanning electron microscopy analysis[J]. Engineering Fracture Mechanics,241,2021,107408.

[14] Bin Xu, Qi Wu. Stress fatigue crack propagation analysis of crane structure based on acoustic emission[J]. Engineering Failure Analysis,109,2020,104206.

[15] DU K,LI X F,TAO M, et al. Experimental study on acoustic emission (AE) characteristics and crack classification during rock fracture in several basic lab tests[J]. International Journal of Rock Mechanics and Mining Sciences,2020,133:104411.

[16] Kaizhong Xie, Kang Huang, Quanguo Wang, et al. Study of bond-slip performance of steel tube with UHPC based on acoustic emission parameter analysis[J]. Structures,70,2024,107828.

[17] NIU Y,ZHOU X P,BERTO F. Evaluation of fracture mode classification in flawed red sandstone under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics, 2020, 107: 102528.

[18] ZHAO K,MA H L,YANG C, et al. The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading[J]. International Journal of Rock Mechanics and Mining Sciences,2022,157:105166.

[19] Sizhe Du, Bo Liang, Yu Zhang, et al. Mechanical properties and damage characteristics analysis on recycled aggregate concrete with glazed hollow beads after high temperatures by acoustic emission method[J]. Journal of Building Engineering, 90, 2024, 109429.

[20] Hernán Xargay, Alejandra Vesga-Ramírez, Marianela Ripani, et al. Acoustic Emission monitoring of OPC mortars at elevated temperatures in fracture tests[J]. Procedia Structural Integrity,64,2024,1790-1797.

[21] L.R. Botvina, A.I. Bolotnikov, I.O. Sinev, et al. Acoustic emission, damage and fracture mechanisms of structural steel under mixed-mode loading [J]. Engineering Fracture Mechanics, 292,2023,109635.

[22] Suresh Nuthalapati, K.E. Kee, Mokhtar B. Che Ismail, et al. Detection and characterization of chloride induced stress corrosion cracking on SS304 under thermal insulation using acoustic emission technique[J]. Engineering Failure Analysis, 168, 2025,109094.

[23] Hui Wei, Baosheng Xu, Jue Li, et al. Effect of temperature on fatigue damage evolution of asphalt mixture based on cluster analysis and acoustic emission parameters[J]. Engineering Fracture Mechanics,Volume 317,2025,110954.

[24] ASTM E647.Standard test method for measurement of fatigue crack growth rates[S]. Annual book of ASTM standards,2010. Philadelphia.

[25] Monitoring method for active cracks in concrete by acoustic emission:JCMS-Ⅲ B5706[S]. Japan:Federation of Construction Materials Industries,2003.

[26] WANG Y,ZHANG B,GAO S H,et al. Investigation on the effect of freeze-thaw on fracture mode classification in marble subjected to multi-level cyclic loads[J]. Theoretical and Applied Fracture Mechanics,2021,111:102847.

[27] FAN X Q,LI S T,CHEN X D,et al. Fracture behaviour analysis of the full-graded concrete based on digital image correlation and acoustic emission technique[J]. Fatigue and Fracture of Engineering Materials and Structures,2020,43:1 274–1 289.

[28] ZHANG Z H,DENG J H. A new method for determining the crack classification criterion in acoustic emission parameter analysis[J]. International Journal of Rock Mechanics and Mining Sciences,2020,130:104323.

[29] DAS A K,SUTHAR D,LEUNG C K Y. Machine learning based crack mode classification from unlabeled acoustic emission waveform features[J]. Cement and Concrete Research,2019,121:42–57.

[30] LI J S,LIAN S L,HUANG Y S,et al. Study on crack classification criterion and failure evaluation index of red sandstone based on acoustic emission parameter analysis[J]. Sustainability,2022,14(9):5 143.

[31] Chan KS. Scaling laws for fatigue crack growth of large cracks in steels[J]. Metal Trans A 1993;24:2473–86.

[32] Chan KS, Pan YM, Davidson D, Mcclung RC. Fatigue crack growth mechanisms in HSLA-80 steels[J]. Mater Sci Eng A 1997;222:1–8

[33] Kumar J, Ahmad S, Mukhopadhyay CK, Jayakumar T, Kumar V. Acoustic emission studies for characterization of fatigue crack growth behavior in HSLA steel[J]. Nondestr Test Eval 2016;31:77–96

[34] Amsterdam E, Grooteman F. The influence of stress state on the exponent in the power law equation of fatigue crack growth[J]. Int J Fatigue 2016;82:572–8.