Mechanical aspects of corrosion fatigue and stress corrosion cracking

Bolotin, V. V.; Shipkov, A. A.

doi:10.1016/s0020-7683(01)00002-6

Cited by 33 publications

(27 citation statements)

References 15 publications

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“…The AE features which are extracted in postprocessing from the recorded by various sensing methods AE data (typically in the form of waveforms of voltage versus time) include time, frequency and energy parameters such as amplitude, peak frequency, wave nature (burst vs continuous), duration, energy, and partial powers, which are used to identify the time of activation and in some instances the location of primary AE sources [46][47][48][49]. Known sources of AE include plastic deformation [32,50], cracking [27,34,35,37,38], corrosion [50,51], and others [14,[52][53][54]. In fact, AE monitoring has been used for material characterization and damage identification across length scales including microscale [14,30,32], mesoscale [27,29,34,38,39] and macroscale [25,31], which makes this technique particularly relevant in the recently widely explored area of Integrated Computational Materials Engineering (ICME) [55,56].…”

Section: Introductionmentioning

confidence: 99%

In Situ Microscopic Investigation to Validate Acoustic Emission Monitoring

et al. 2015

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A novel experimental mechanics technique using Scanning Electron Microscopy (SEM) in conjunction with Acoustic Emission (AE) monitoring is discussed to investigate microstructure-sensitive mechanical behavior and damage of metals and to validate AE related information. Validation for the use of AE method was obtained by using aluminum alloy sharp notch specimens with different geometries tested inside the microscope and compared to results obtained outside the microscope, as well as to previously published data on similar investigations at the laboratory specimen scale. Additionally, load data were correlated with both AE information and microscopic observations of microcracks around grain boundaries as well as secondary cracks, voids, and slip bands. The reported AE results are in excellent agreement with similar findings at the mesoscale, while they are further correlated with in situ and post mortem observations of microstructural damage processes.

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Section: Introductionmentioning

confidence: 99%

In Situ Microscopic Investigation to Validate Acoustic Emission Monitoring

et al. 2015

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“…Bolotin and Shipkov [34] studied the crack growth under mechanical and environmental actions based on synthesis of fracture mechanics and CDM. They presented a CDM approach to model CF, stress corrosion cracking (SCC) and hydrogen embrittlement (HE).…”

Section: Cdm Approach To Pitting Cfmentioning

confidence: 99%

“…The overall damage was the sum of several scalar damage measures such as D c , D s , D f and D h , where D c is the damage associated with stress-free corrosion, D s due to SCC, D f due to CF, and D h due to HE. Note that Bolotin and Shipkov [34] used notation ω(x, t) to denote damage variable, we instead use D for consistency. With this additive damage proposition, the scalar variable D was then related to reduction of fracture toughness due to the damage induced by mechanical loading/deformation process and corrosion.…”

Section: Cdm Approach To Pitting Cfmentioning

confidence: 99%

“…The fracture mechanics approach outlined by Kondo [16] and Wei et al [17,[21][22][23]30,31] includes both time and length scales by introducing frequency of fatigue loading (f) and pit length (a) into the formulations. For a comprehensive discussion on the role of time and length scales in CF damage readers may refer to reference [34]. In the CDM approach implemented in this paper, we discuss the effect of loading frequency and pit size on the overall fatigue life.…”

Section: Introductionmentioning

confidence: 99%

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A continuum damage mechanics model for pit-to-crack transition in AA2024-T3

et al. 2015

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“…8) A probabilistic approach has been studied for the corroded cable wires of a suspension bridge evaluated a statistical life span. 10) Due to corrosion-fatigue or a static fatigue in the local area, the main cable of a suspension bridge could produce fast loss of serviceability or an unexpected sudden fracture of the structural system. Among other types of deterioration in local regions, Bolotin et al suggested analytical model for corrosion-deterioration coupled with fatigue crack growth.…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of a Suspension Bridge Affected by Hydrogen Induced Cracking Based upon Response Surface Method

Cho

Kim

Lee³

et al. 2009

ISIJ Int.

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This paper deals with the Hydrogen Induced Cracking (HIC) of wires in a cable of a suspension bridge. The main objective is to compare the safety of a bridge system locally and globally. In a deterministic analysis stage, HIC in cable wires is calculated in order to evaluate the local safety of the main cable of suspension bridge. In the local analysis, a decoupling technique has been developed for the evaluation of crack propagations in a wire section driven by the hydrogen diffusion to a wire section, in terms of two 2-dimensional finite element models. One is for the fracture analysis in a longitudinal section, and the other is for a hydrogen diffusion model in a horizontal section. In a stochastic analysis stage, an ultimate limit state function for the cracking in cable wires is considered for the local safety of main cable. Using the ultimate limit state, the reliability of time-dependent and crack depth-dependent HIC of a cable wire has been calculated in component and parallel system reliability analysis. Globally, a serviceability limit state based on the global responses of a stiffening girder is also evaluated. Based on the observed difference of safeties between the global and local behaviors of the suspension bridge system, the proposed solutions are discussed.KEY WORDS: hydrogen induced cracking; crack propagation; cable wires; suspension bridges; reliability. axial strength of twisted strand wires. 11)Those previous studies may predict the fatigue crack growing in a wire or provide a monitoring criterion for corroded cable wires. However, the crack propagation is mainly caused by hydrogen induced cracking in a main cable of a suspension bridge.The main objective of this study is to investigate the safety of an example suspension bridge considering local reliability of the corrosion assisted crack growth in cable wires, and the global safety of a suspension bridge affected by HIC in main cables as follows:(1) Application of the developed analytical model for the fracture analysis in a cable wire by utilizing the developed analytical model for the diffusion analysis by the infiltrated hydrogen atoms. 4) (2) Reliability analysis for the HIC of a cable wire for a crack growth as a time dependent function for the evaluation of local safety in main cables, based on the fracture analysis for crack growing with transient hydrogen diffusion analysis.(3) Reliability analysis for the global behavior of suspension bridge system in order to compare global safety with the local behavior based on FE analysis. Cable Wire Attacked by Hydrogen Induced Crack 2.1. Decoupling the Diffusion Analysis and FractureAnalysis for HIC in Wire The authors have decoupled the hydrogen diffusion analysis from the fracture analysis for crack growing in prestressed wires due to HIC. 4) As the conservative and practical design of a structure regarding HIC, two 2-dimensional simplified finite element analysis (FEA) models have been proposed. As shown in Fig. 2, in the longitudinal section, the SIF is calculated by a fracture analysis...

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Mechanical aspects of corrosion fatigue and stress corrosion cracking

Cited by 33 publications

References 15 publications

In Situ Microscopic Investigation to Validate Acoustic Emission Monitoring

In Situ Microscopic Investigation to Validate Acoustic Emission Monitoring

A continuum damage mechanics model for pit-to-crack transition in AA2024-T3

Reliability Analysis of a Suspension Bridge Affected by Hydrogen Induced Cracking Based upon Response Surface Method

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