Fatigue Life Assessment of Selected Engineering Materials Based on Modified Low-Cycle Fatigue Test

Maj, M.

doi:10.2478/afe-2013-0017

Cited by 5 publications

(11 citation statements)

References 9 publications

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“…Considering all these drawbacks, a modified version of the low cycle fatigue test (MLCF) was developed. The MLCF method gives comprehensive information on numerous static and dynamic mechanical properties based on the measurements which are always taken on one sample only [12]. The fatigue limit (Z go ), necessary to calculate the test parameters, is determined from a test curve developed for different types of materials [13].…”

Section: Low Cycle Fatigue Test (Lcf) Vs Modified Low Cycle Fatigue T...mentioning

confidence: 99%

“…To estimate the parameters typical of low cycle tests, a modified low cycle fatigue test (MLCF) was applied [12,13], and the following relationships known from the conventional low cycle fatigue test (LCF) were used:…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The fatigue limit Z go necessary for the calculation of sample parameters was evaluated from an experimental curve (Fig. 1) plotted for a variety of materials ranging from pure metals to iron alloys and non-ferrous metal alloys [12,13,16]. Figure 4 shows the essence of fatigue test in its two embodiments, i.e.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…To assess the fatigue life, an original modified low-cycle fatigue test [10,11,12] (hereinafter referred to as MLCF) was used. As claimed by the authors of the study, this method may also serve as a tool for the quick estimation of other fatigue parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.1. Curve for fatigue strength evaluation[12,13,16].To determine the values of b, c, n', K and  max , the following assumptions were adopted[12,13,16]:  the disorders in a uniaxial stress field under compression are eliminated by application of one-sided cycles during tension in the fatigue test,  the relationship between permanent set, induced by the adopted low number of cycles, and cycle amplitude is the same as in the case of the strain after sample failure[12,13],  the mechanical properties mentioned at the beginning of this chapter are determined on one sample only,…”

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confidence: 99%

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Archives of Foundry Engineering

Maj

Pietrzak

Klasik

2019

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Section: Low Cycle Fatigue Test (Lcf) Vs Modified Low Cycle Fatigue T...mentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

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Archives of Foundry Engineering

Maj

Pietrzak

Klasik

2019

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Strain-controlled thermomechanical fatigue testing of EN-GJL-250 for automotive brake disc application

Sathish,

Maniraj,

Thangarasu

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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In an automobile braking system, the heating and cooling cycles that take place on the brake disc surface during braking action lead to thermomechanical fatigue (TMF). TMF, a type of non-isothermal fatigue, occurs when a material experiences simultaneous mechanical and thermal loads. Based on a material’s elastic and plastic deformation, the strain-life technique of fatigue analysis calculates how many TMF cycles a material will withstand before failing. However, it is challenging to effectively recreate the TMF process using conventional testing methods due to the cyclical changes in temperature, stress, and strain. So, in the current situation, all TMF life projections are based mostly on isothermal condition because low-cycle fatigue (LCF) data, which is normally used for design purposes, has been created isothermally. In the present work, a reliable test procedure is adopted to measure the TMF behavior of cast iron grade EN-GJL-250. The novel testing procedure closely resembles the field’s cyclical patterns of temperature and mechanical strain, in addition to online monitoring of the TMF cycles. The testing procedure complies with ISO 12111, ASTM E2368, and the European Code of Practice (CoP). The TMF behavior of EN-GJL-250 was characterized by hysteresis loops and cyclic stress-strain responses. Designers can use test data to help them simulate component behavior and validate current designs through numerical simulations.

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Archives of Foundry Engineering

Klasik¹,

Maj²,

Pietrzak³

et al. 2018

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The multiple direct remelting of composites based on the A359 alloy reinforced with 20% of Al2O3 particles was performed. The results of both gravity casting and squeeze casting were examined in terms of the obtained microstructure and mechanical characteristics. In microstructure examinations, the combinatorial method based on phase quanta theory was used. In mechanical tests, the modified low cycle fatigue method (MLCF) was applied. The effects obtained after both gravity casting and squeeze casting were compared. It was noted that both characteristics were gradually deteriorating up to the tenth remelting. The main cause was the occurrence of shrinkage porosity after the gravity casting. Much better results were obtained applying the squeeze casting process. The results of microstructure examinations and fatigue tests enabled drawing the conclusion that the A359 alloy reinforced with Al2O3 particles can confer a much better fatigue life behavior to the resulting composite than the A359 alloy without the reinforcement. At the same time, comparing these results with the results of the previous own research carried out on the composites based also on the A359 alloy but reinforced in the whole volume with SiC particles, it has been concluded that both types of the composites can be subjected to multiple remelting without any significant deterioration of the structural and mechanical characteristics. The concepts and advantages of using the combinatorial and MLCF methods in materials research were also presented

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Fatigue Life Assessment of Selected Engineering Materials Based on Modified Low-Cycle Fatigue Test

Cited by 5 publications

References 9 publications

Archives of Foundry Engineering

Archives of Foundry Engineering

Strain-controlled thermomechanical fatigue testing of EN-GJL-250 for automotive brake disc application

Archives of Foundry Engineering

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