Fretting behavior of Ti-6Al-4V under combined high cycle and low cycle fatigue loading

Namjoshi, S. A.; Mall, S.

doi:10.1016/s0142-1123(01)00143-8

Cited by 29 publications

(5 citation statements)

References 14 publications

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“…Since the fatigue problems under combined cycle loadings were noticed by Fuchs et al [ 26 ], recently, increasing attention has been paid for the CCF failure analysis. Namjoshi et al [ 27 ] calculated the damage fraction from LCF and HCF components of combined cycling under fretting fatigue loadings. Oakley et al [ 28 ] presented a life prediction model under CCF conditions by considering foreign object damage.…”

Section: Introductionmentioning

confidence: 99%

A Combined High and Low Cycle Fatigue Model for Life Prediction of Turbine Blades

Zhu

Yue

et al. 2017

Materials

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Combined high and low cycle fatigue (CCF) generally induces the failure of aircraft gas turbine attachments. Based on the aero-engine load spectrum, accurate assessment of fatigue damage due to the interaction of high cycle fatigue (HCF) resulting from high frequency vibrations and low cycle fatigue (LCF) from ground-air-ground engine cycles is of critical importance for ensuring structural integrity of engine components, like turbine blades. In this paper, the influence of combined damage accumulation on the expected CCF life are investigated for turbine blades. The CCF behavior of a turbine blade is usually studied by testing with four load-controlled parameters, including high cycle stress amplitude and frequency, and low cycle stress amplitude and frequency. According to this, a new damage accumulation model is proposed based on Miner’s rule to consider the coupled damage due to HCF-LCF interaction by introducing the four load parameters. Five experimental datasets of turbine blade alloys and turbine blades were introduced for model validation and comparison between the proposed Miner, Manson-Halford, and Trufyakov-Kovalchuk models. Results show that the proposed model provides more accurate predictions than others with lower mean and standard deviation values of model prediction errors.

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Section: Introductionmentioning

confidence: 99%

A Combined High and Low Cycle Fatigue Model for Life Prediction of Turbine Blades

Zhu

Yue

et al. 2017

Materials

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“…It is also expected to favour the coupling analysis between this plain fretting test condition and the usual fretting fatigue configuration which combines heteregeous fretting and homogeneous fatigue stress fields [27][28][29][30].…”

Section: Resultsmentioning

confidence: 99%

Prediction of fretting crack propagation based on a short crack methodology

Fouvry

Nowell

Kubiak

et al. 2008

Engineering Fracture Mechanics

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:Fretting tests have been conducted to determine the maximum crack extension under partial slip conditions, as a function of the applied tangential force amplitude. An analytical model representing a fretting-induced slant crack has been implemented and combined with the Kitagawa-Takahashi short crack methodology. This approach provides reasonable qualitative agreement between experimental and predicted maximum fretting crack lengths, supporting previous results concerning the prediction of the fretting-fatigue endurance. It is, however, observed that the model is systematically conservative. A discussion of the appropriate fundamental parameters when dealing with steep stress gradients such as those present in fretting, and which are difficult to interpret in the context of the Kitagawa-Takahashi method, is presented. It is shown that an inverse procedure identifies the required fundamental parameters. Hence, a specific fretting long crack transition length for the low carbon steel studied can be extrapolated. It is also shown that the maximum crack length evolution under plain fretting wear test conditions can be used to calibrate fretting fatigue predictions.

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“…Even though the combined high and low cycle fatigue behaviors of the turbine blades in aero-engines were reported in a few studies [ 31 , 32 , 33 , 34 , 35 ], the loading form is a coinstantaneous combined form of the major and minor stress cycles, and the turbine blades are usually made by titanium alloys, whose mechanical properties are quite different from the low alloy steels. Hence the present work concentrated on the combined high and low cycle fatigue performance of the low alloy steel Q345qD.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Combined High and Low Cycle Fatigue Performance of Low Alloy Steel and Engineering Application

Tang

Zheng

et al. 2021

Materials

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The fatigue behaviors of metals are different under different in-service environment and loading conditions. This study was devoted to investigating the combined effects of high and low cycle fatigue loads on the performance of the low alloy steel Q345. Three kinds of experiments were carried out, including the pure high cycle fatigue (HCF) tests, the pure low cycle fatigue (LCF) tests, and the combined high and low cycle fatigue (HLCF) tests. The prediction formulae were proposed for the combined high and low cycle fatigue failure. Scanning electron microscopy (SEM) and stereo microscope were used to analyze the microstructure and fracture morphology due to different fatigue loads. Case study on the combined high and low cycle fatigue damage of a steel arch bridge was carried out based on the FE method and the proposed formula. The results show that the LCF life decreases evidently due to the prior HCF damages. The HLCF fracture surface is relatively flat near the crack initiation side, and rugged at the other half part. The fatigue damages at the bridge joints increase significantly with consideration of the pre-fatigue damages caused by traffic load. In the 100th anniversary of service, the fatigue damage index without considering the HCF pre-damage is only about 50% of the coupled damage value.

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Fretting behavior of Ti-6Al-4V under combined high cycle and low cycle fatigue loading

Cited by 29 publications

References 14 publications

A Combined High and Low Cycle Fatigue Model for Life Prediction of Turbine Blades

A Combined High and Low Cycle Fatigue Model for Life Prediction of Turbine Blades

Prediction of fretting crack propagation based on a short crack methodology

Experimental and Numerical Study of Combined High and Low Cycle Fatigue Performance of Low Alloy Steel and Engineering Application

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