Deterministic and Probabilistic Analysis of Semi-elliptical Cracks in Austenitic Steel

Śnieżek, Lucjan; Stępień, Sławomir; Torzewski, Janusz; Hutsaylyuk, Volodymyr

doi:10.1016/j.mspro.2014.06.350

Cited by 2 publications

(1 citation statement)

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“…Many studies have evaluated fatigue crack growth (FCG) and fatigue lifetime predictions, raising concerns regarding the crack growth rate (Shen et al, 2001;Sniezek et al, 2014;Riahi et al, 2011;Leonel et al, 2012;Kocanda and Jasztal, 2012). Indeed, by detecting the state of crack propagation conditions researchers will be able to assess the status of equipment and prevent industrial accidents from occurring (Wu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

The probabilistic analysis of fatigue crack effect based on magnetic flux leakage

Ahmad

Arifin

Abdullah

et al. 2019

IJRS

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In this paper, probabilistic analysis on the fatigue crack effect was investigated by applying the Metal Magnetic Memory (MMM) method, based on Self-Magnetic Leakage Field (SMLF) signals on the surface of metal components. The precision of MMM signals is essential in identifying the validity of the proposed method. The tension-tension fatigue test was conducted using the testing frequency of 10 Hz with 4 kN loaded, and the MMM signals were captured using the MMM instrument. As a result, a linear relationship was observed between the magnetic flux leakage and cyclic loading parameter, presenting the R-squared value at 0.72-0.97. The 2P-Weibull distribution function was used as a probabilistic approach to identify the precision of the data analysis from the predicted, and experimental fatigue lives, thereby showing that all points are placed within the range of a factor of 2. Additionally, the characteristics of PDF, CDF, failure rate and failure probability data analysis were plotted and described. Therefore, a 2P-Weibull probability distribution approach is determined to be an appropriate method to determine the accuracy of data analysis for MMM signals in a fatigue test for metal components.

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Section: Introductionmentioning

confidence: 99%

The probabilistic analysis of fatigue crack effect based on magnetic flux leakage

Ahmad

Arifin

Abdullah

et al. 2019

IJRS

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Quality Analysis of AISI 321 Welds of Bellow Compensators Used in Shipbuilding

Marić

Cumin

Šolić

et al. 2022

JMSE

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The production of compensators (expansion joints), and especially of bellows as their most demanding elements, requires the usage of stainless materials. These stainless materials exhibit certain particularities at welding (and quality control) since they are very thin, i.e., their thickness ranges usually from 0.12 to 3.00 mm. This paper starts with the elaboration of compensators and their application, and further presents characteristics of the material selected for experimental testing. In the second part, the paper continues with a description of the experiment referring to longitudinal welding of samples without filler material. The experiment focused on the determination of accurate characteristics of radiographic recordings and their assessment based on comparison with the tensile testing (mechanical properties), FEM numerical simulation and dimensional control. The paper also presents the analysis of obtained results and conclusions made thereof. The research hypothesis was to determine in what way the welding parameters affect the mechanical properties, the geometric shape of the welds, and the exploitation possibilities of the compensator. According to the performed experimental part and the performed testing of mechanical properties, all welded joints are acceptable for use. Nevertheless, according to the standard that prescribes the acceptability criteria of defects that occur in welded joints, some of tested samples were not suitable for operating conditions. Such kinds of welded sheets must be repaired or eliminated from further processing.

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Deterministic and Probabilistic Analysis of Semi-elliptical Cracks in Austenitic Steel

Cited by 2 publications

References 10 publications

The probabilistic analysis of fatigue crack effect based on magnetic flux leakage

The probabilistic analysis of fatigue crack effect based on magnetic flux leakage

Quality Analysis of AISI 321 Welds of Bellow Compensators Used in Shipbuilding

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