Effect of contact pad rigidity on fretting fatigue behavior of NiCrMoV turbine steel

Jayaprakash, M.; Mutoh, Yoshiharu; Asai, Kunio; Ichikawa, Kouji; Sukarai, Shigeo

doi:10.1016/j.ijfatigue.2010.04.005

Cited by 36 publications

(14 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the point with the most severe damage produces a prominent stress concentration effect, which accelerates the initiation of microcracks and reduces the fretting fatigue lives. 25,33 The equivalent strain also increases because the contact stress increases, which indicates that the samples have undergone strong plastic deformation during the fretting fatigue process. This plastic deformation will activate the propagation of microcracks.…”

Section: Fretting Fatigue Lifementioning

confidence: 99%

Effect of contact stress on fretting fatigue behaviour of 35CrMoA steel under multiaxial nonproportional paths

Zhou

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Fretting fatigue often occurs in contact couples subjected to both bulk oscillatory loads and normal loads, which accelerates the initiation and propagation of fatigue cracks. This study explores the multiaxial fretting fatigue behaviour of 35CrMoA steel with different contact stresses under diamond and square loading paths by experimental methods. From experimental results, the fracture mechanisms with the increase of contact stress have been summarized by combining the analysis of macrorupture and microrupture surface. The strain response behaviour, characteristics of fretting region and crack propagation direction are also analysed and concluded considering the influence of loading path and contact stress in this paper, which have been rarely mentioned in the previous literature. In addition, debris composition of stick and slip regions is investigated as well.

show abstract

Section: Fretting Fatigue Lifementioning

confidence: 99%

Effect of contact stress on fretting fatigue behaviour of 35CrMoA steel under multiaxial nonproportional paths

Zhou

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…(iii) Fretting fatigue strength has depended on tangential stress range and compressive stress range, (iv) Fretting fatigue failure criterion has been reproduced by a fretting fatigue design curve. This has drawn from plots of tangential stress range versus compressive stress range diagram [18].…”

Section: Ni-cr-mo-v Steel (Effects Of Fatigue)mentioning

confidence: 99%

Creep and Fatigue Behavior in Micro-alloyed Steels – A Review

Raj

Goswami

Ray

2014

High Temperature Materials and Processes

View full text Add to dashboard Cite

This is a study of microalloyed steels for power plants and reactors. Components operate at coal dust fire temperature or thermal states of reactors, prone to creep during its service. This is to assess remaining life after passage of valuable life by variation in microstructure, e.g. cavity formation. Precipitation at the sub-grain boundaries and grain interior has increased high temperature strength. Coarsening of these appears at the end of life. Variation of heat treatment like spheroidising in place of solutionizing has been responsive to deteriorate performance. Dislocation interplay with precipitate has been acceptable while interaction among dislocations to forest dislocation has been unacceptable. Dislocation assisted nucleation of precipitates of fine size has been found to strengthen steel by thermo-mechanical control process with in greater heating temperature and lower finish rolling temperature. High temperature performance of materials has been assessed by creep, accelerated creep, creep-fatigue and fatigue performances. Increasing temperature for increasing efficiency has correlated the phase transformation of steel. Fatigue performances have been included in creep properties of materials when intermittent shut down-shut up schedules are operated, e.g. peaking power plants.

show abstract

“…To eliminate the influence of special contact geometry, studies on material fretting were aimed at establishing a more general model through a contact pair of a fretting pad and matrix. [30][31][32][33][34][35][36][37][38][39] Although the contact pressure and the tangential force can be settled separately in the tests, the real contact state and the local stress distribution under the contact pad, however, could not be accurately determined due to the minimum relative rotations. Those tests contained significant scattering in experimental data.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational investigation of fretting fatigue characterized by nominal contact pressure in dovetail structures

Guo

Li²,

Cao³

et al. 2022

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The present work is aimed at establishing an engineering design method for fretting fatigue based on experimental and computational investigation of dovetail structures made of nickel‐based superalloy. Severe stress gradients and surface wear damage make fretting fatigue difficult to be assessed based on conventional fatigue life models. With the help of detailed experimental investigations and finite element computations, a fretting fatigue life model based on the nominal pressure on the dovetail contact surfaces was related to the nonlocal multiaxial fatigue analysis. The derived fretting design method based on the nominal pressure shows a life prediction distribution within the double‐scatter band and agrees with experiments fairly well. The present model provides an efficient and easy‐to‐use design method for engineering applications.

show abstract

Effect of contact pad rigidity on fretting fatigue behavior of NiCrMoV turbine steel

Cited by 36 publications

References 33 publications

Effect of contact stress on fretting fatigue behaviour of 35CrMoA steel under multiaxial nonproportional paths

Effect of contact stress on fretting fatigue behaviour of 35CrMoA steel under multiaxial nonproportional paths

Creep and Fatigue Behavior in Micro-alloyed Steels – A Review

Experimental and computational investigation of fretting fatigue characterized by nominal contact pressure in dovetail structures

Contact Info

Product

Resources

About