Analysis of the fatigue strength under two load levels of a stainless steel based on energy dissipation

Atzori, B.; Meneghetti, Giovanni; Ricotta, Mauro

doi:10.1051/epjconf/20100638009

Cited by 12 publications

(5 citation statements)

References 5 publications

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“…As visible in Table 2, the numerical study provided relatively good agreement between the calculated Se values with the experimentally determined Se values of some investigated materials (AISI 304 and AA 1050). This observation refers firstly to AISI 304 steel whose numerically determined Se value of 103 MPa is perfectly fitting the span of experimental values (95-111 MPa) that can be found in literature [31][32][33]. A relatively good agreement, however with a slight underestimation, was achieved for the aluminum alloy AA 1050 (8 versus 10-14 MPa [36]).…”

Section: Figuresupporting

confidence: 72%

Simulation-based Understanding of the Critical Resolved Shear Stress Relevance for the Fatigue Performance of Metallic Materials

Mlikota¹,

Schmauder²

2020

Preprint

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The paper introduces a valuable new description of fatigue strength in relation to material properties and thus a new perspective on the overall understanding of the fatigue process. Namely, a relation between the endurance limits and the accompanying values of the critical resolved shear stress (CRSS) for various metallic materials has been discovered by means of a multiscale approach for fatigue simulation. Based on the uniqueness of the relation, there is a strong indication that it is feasible to relate the endurance limit to the CRSS, and not to the ultimate strength as often done in the past.

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Section: Figuresupporting

confidence: 72%

Simulation-based Understanding of the Critical Resolved Shear Stress Relevance for the Fatigue Performance of Metallic Materials

Mlikota¹,

Schmauder²

2020

Preprint

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“…In order to be able to evaluate these properties, the material response due to the fatigue loading is measured by using different NDT-related techniques. For instance IR-thermography or electrical resistance measurements, are very sensitive tools to measure and evaluate changes in microstructure during the fatigue process, 26,[44][45][46][47][48][49][50][51][52][53][54] whereby the focus in this article is on the use of temperature data. Additionally, values from related change in electrical resistance and plastic strain amplitude are included into the consideration.…”

Section: Midaclife Incrmentioning

confidence: 99%

A nonlinear lifetime prediction method for un‐ and low alloyed steels by damage determination based on non‐destructive measurement techniques

Weber,

Maul,

Juner

et al. 2024

Fatigue Fract Eng Mat Struct

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Materials used in nuclear power plants are exposed to cyclic loading, which is why the understanding of fatigue behaviour is of great importance. Because of high time investments and resulting increased costs, Lifetime Prediction Methods, which significantly reduce the amount of specimen, have already been developed. Within this paper, the Lifetime Prediction Method MiDAcLifeincr is presented, which enables a determination of a trend S‐N curve in the High‐Cycle‐Fatigue‐regime based on only one fatigue test and the combination of conventional fatigue testing with NDT‐related measurement techniques. The process‐orientated monitoring of the cyclic deformation behaviour provides the basis for the time‐ and cost‐effective provision of fatigue data. Compared with previous methods, the consideration of variable loading is an essential aspect of the research application. The test material is a 20MnMoNi5‐5 steel, the results of which are extended to include other steels for validation reasons.

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“…,02 p  is the material cyclic proof stress. For the AISI 304L steel material analysed in this paper, =7940 kg/m 3 , c=507 J/(kg·K) [19], ' ,02 p  =290 MPa [9].…”

Section: Comparison Between Experimental and Theoretical Temperaturesmentioning

confidence: 99%

Experimental estimation of the heat energy dissipated in a volume surrounding the tip of a fatigue crack

Meneghetti

Ricotta

2015

Frattura Ed Integrità Strutturale

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Fatigue crack initiation and propagation involve plastic strains that require some work to be done on the material. Most of this irreversible energy is dissipated as heat and consequently the material temperature increases. The heat being an indicator of the intense plastic strains occurring at the tip of a propagating fatigue crack, when combined with the Neuber's structural volume concept, it might be used as an experimentally measurable parameter to assess the fatigue damage accumulation rate of cracked components. On the basis of a theoretical model published previously, in this work the heat energy dissipated in a volume surrounding the crack tip is estimated experimentally on the basis of the radial temperature profiles measured by means of an infrared camera. The definition of the structural volume in a fatigue sense is beyond the scope of the present paper. The experimental crack propagation tests were carried out on hot-rolled, 6-mm-thick AISI 304L stainless steel specimens subject to completely reversed axial fatigue loading.

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Analysis of the fatigue strength under two load levels of a stainless steel based on energy dissipation

Cited by 12 publications

References 5 publications

Simulation-based Understanding of the Critical Resolved Shear Stress Relevance for the Fatigue Performance of Metallic Materials

Simulation-based Understanding of the Critical Resolved Shear Stress Relevance for the Fatigue Performance of Metallic Materials

A nonlinear lifetime prediction method for un‐ and low alloyed steels by damage determination based on non‐destructive measurement techniques

Experimental estimation of the heat energy dissipated in a volume surrounding the tip of a fatigue crack

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