First attempts towards the early detection of fatigued substructures using cyclic-loaded 20 MnMoNi 5 5 steel

Dobmann, Gerd; Seibold, A.

doi:10.1016/0029-5493(92)90259-x

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…Subsequently, some of the main important 3MA applications will be described in more detail. [59][60][61][62] One of the earliest applications of 3MA was the inspection of components in nuclear power plants. Such components are subjected to different ageing phenomena.…”

Section: Overviewmentioning

confidence: 99%

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Nondestructive Testing with 3MA—An Overview of Principles and Applications

2019

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More than three decades ago, at Fraunhofer IZFP, research activities that were related to the application of micromagnetic methods for nondestructive testing (NDT) of the microstructure and the properties of ferrous materials commenced. Soon, it was observed that it is beneficial to combine the measuring information from several micromagnetic methods and measuring parameters. This was the birth of 3MA-the micromagnetic multi-parametric microstructure and stress analysis. Since then, 3MA has undergone a remarkable development. It has proven to be one of the most valuable testing techniques for the nondestructive characterization of metallic materials. Nowadays, 3MA is well accepted in industrial production and material research. Over the years, several equipment variants and a wide range of probe heads have been developed, ranging from magnetic microscopes with µm resolution up to large inspection systems for in-line strip steel inspection. 3MA is extremely versatile, as proved by a huge amount of reported applications, such as the quantitative determination of hardness, hardening depth, residual stress, and other material parameters. Today, specialized 3MA systems are available for manual or automated testing of various materials, semi-finished goods, and final products that are made of steel, cast iron, or other ferromagnetic materials. This paper will provide an overview of the historical development, the basic principles, and the main applications of 3MA.

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Section: Overviewmentioning

confidence: 99%

“…[57,58]. Furthermore, 3MA can be used to characterize hydrogen-induced embrittlement, fatigue, toughness, notch impact strength, and creep damage in steel [59][60][61].…”

Section: Overviewmentioning

confidence: 99%

Nondestructive Testing with 3MA—An Overview of Principles and Applications

2019

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“…Microstructure NDE-techniques were applied characterizing the different microstructure states [3]. In order to rule out any influences of the surface effects mentioned above, small test specimens (dia.…”

Section: The Microslruciure Approachmentioning

confidence: 99%

Early Fatigue Damage from the NDE Point of View

Dobmann

1995

Review of Progress in Quantitative Nondestructive Evaluation

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“…NDT in engineering analysis for the evaluation of related variables is the first step in that direction. If proper sensing techniques are adopted, the link between the development of non-linear damage growth and the numerous parameters instantaneously recorded by NDT techniques may offer more suitable ways to distinguish fatigue processes than the traditional stress-strain assessment [ 17 , 18 ]. The application of various NDT-associated techniques to determine local material conditions under cyclic loading yields more precise data, such as the behaviour of cyclic distortion in the region of very low plastic strains, low stresses, and several cycles to failure [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Assessment of API Steel Grade X65 Pipeline Using a Modified Basquin Parameter of the Magnetic Flux Leakage Signal

et al. 2023

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This paper presents a modified fatigue life model of the Basquin equation using the stress parameter of the magnetic flux leakage signal. Most pipeline steels experience cyclic loading during service and the influence of the load history makes assessing fatigue behaviour more difficult. The magnetic flux leakage signal’s response to a uniaxial cyclic test of API X65 steel was measured with eight levels of ultimate tensile stress loads. The influence of dH(y)/dx on fatigue failure was the main concern in this study, the aim being to represent localised stress parameters in the modified Basquin equation. Both fatigue lives, experimental and predicted from the modified Basquin equation, were validated through reliability analysis, producing a 60% value when approaching 1.8 × 105 cycles. The fatigue data from the experiment produced a higher mean-cycle-to-failure value than the prediction data, with slightly different values of 3.37 × 105 and 3.28 × 105. Additionally, the modified Basquin equation’s predicted and the experimental fatigue lives were found to have a high R2 correlation value of 0.9022. The Pearson correlation also showed a good relationship between the fatigue lives, with an r value of 0.9801. Finally, the modified Basquin equation based on dH(y)/dx signals provided an accurate and alternative method for durability assessment.

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First attempts towards the early detection of fatigued substructures using cyclic-loaded 20 MnMoNi 5 5 steel

Cited by 7 publications

References 2 publications

Nondestructive Testing with 3MA—An Overview of Principles and Applications

Nondestructive Testing with 3MA—An Overview of Principles and Applications

Early Fatigue Damage from the NDE Point of View

Fatigue Life Assessment of API Steel Grade X65 Pipeline Using a Modified Basquin Parameter of the Magnetic Flux Leakage Signal

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