Understanding fatigue crack propagation in AISI 316 (N) weld using Elber’s crack closure concept: Experimental results from GCMOD and acoustic emission techniques

Singh, P. Johan; Mukhopadhyay, C. K.; Jayakumar, T.; Mannan, S.L.; Raj, Baldev

doi:10.1016/j.ijfatigue.2006.12.013

Cited by 26 publications

(13 citation statements)

References 11 publications

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“…The results were in good agreement. 7 Subsequently, based on previous studies, several other mechanisms leading to crack closure, such as roughness-induced crack closure, 8 oxidation-induced crack closure, 9 and phase change-induced crack closure, 10 have been proposed by researchers. Mcclung 11 considered plasticity-induced crack closure when studying the size of the forward and reverse plastic zone at the crack tip and developed new models for predicting the plastic zone size.…”

Section: Literature Reviewmentioning

confidence: 99%

Residual life evaluation of remanufacturing blanks considering the crack closure

Hua

Fang

Zhou

et al. 2022

Advances in Mechanical Engineering

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The nonlinear continuous fatigue cumulative damage model proposed by Chaboche was modified considering the effect of crack closure on fatigue damage, and the fatigue cumulative damage and residual life evaluation model of remanufactured blanks was obtained. The related parameters of the modified model were obtained from the data of symmetric cyclic tensile and compression fatigue tests. The residual life evaluation model of remanufactured blanks was verified by the two-stage loading (high and low loading and low and high loading) tensile and compressive fatigue test. The results show that the calculated values of the model are in good agreement with the test values, which proves that the modified model can accurately predict the residual life of remanufactured blanks.

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Section: Literature Reviewmentioning

confidence: 99%

Residual life evaluation of remanufacturing blanks considering the crack closure

Hua

Fang

Zhou

et al. 2022

Advances in Mechanical Engineering

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“…In further investigations, AE signal properties, e.g. counts (Roberts and Talebzadeh, 2003;Bruzelius and Mba, 2004;Singh et al, 2007), could be correlated with crack growth and thus with the state of the tensile specimen.…”

Section: State Of the Artmentioning

confidence: 99%

Condition Monitoring of roller bearings using Acoustic Emission

Cornel¹,

Guzmán²,

Jacobs³

et al. 2020

Preprint

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Abstract. Roller bearing failures in wind turbines gearboxes lead to long downtimes and high repairing costs, which could be reduced by the implementation of a predictive maintenance strategy. In this paper and within this context an acoustic emission based condition monitoring system is applied to roller bearing test rigs with the aim of identifying critical operating conditions before bearing failures occurs. Furthermore, a comparison regarding detection times is carried out with a traditional vibration based condition monitoring systems, with focus on premature bearing failures such as white etching cracks. The investigations show a sensitivity of the acoustic emission system towards lubricating conditions. In addition, the system has shown, that a damaged surface can be detected at least ~ 4 % (8 hours, regarding the time to failure) earlier than by using the vibration based system. Furthermore, significant deviations from the average acoustic emission signal were detected up to ~ 50 % (130 hours) before the test stop and are possibly related to sub-surface damage initiation and might result in an earlier damage detection in the future.

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“…Crack closure also acts a significant role in the SC propagation, which can be ascribed to the compressive PZ caused by constant cyclic loading stress, affecting the crack growth, particularly for PSC 11–13 . For solving this problem, Newman et al 14 considered the crack closure and residual plastic deformation during crack growth, then modified the Elber model, 15 proposing the effective ΔK ( ΔK eff ) to describe da/dN of PSC in several alloys. A model of the plastic deformation of the fracture surface asperities at the crack tip was developed to relate the crushing of the asperities to crack closure and da/dN 16 .…”

Section: Introductionmentioning

confidence: 99%

Microstructural investigation and model of fatigue short crack in EH36 steels

Feng

et al. 2022

Fatigue Fract Eng Mat Struct

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For better revealing the behavior and mechanism of fatigue short crack (SC) propagation, five different kinds of notched samples were designed. Based on the crack growth rate-SC length map, finite element method and electron backscatter diffraction (EBSD) pattern, the evolution theory of geometrically necessary dislocation density (ρ GND ) versus SC length was proposed to distinguish the physically short crack (PSC) length; Schmid factor was utilized to define the length of microstructurally short crack (MSC). Thus, the whole SC growth was divided into three parts: MSC, transition zone and PSC. Finally, an original piecewise model containing two parameters was proposed to describe the whole SC growth of EH36 steels.

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Understanding fatigue crack propagation in AISI 316 (N) weld using Elber’s crack closure concept: Experimental results from GCMOD and acoustic emission techniques

Cited by 26 publications

References 11 publications

Residual life evaluation of remanufacturing blanks considering the crack closure

Residual life evaluation of remanufacturing blanks considering the crack closure

Condition Monitoring of roller bearings using Acoustic Emission

Microstructural investigation and model of fatigue short crack in EH36 steels

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