Formalisation and experimental validation of a novel design methodology to estimate finite lifetime under fretting fatigue loading
Lead Research Organisation:
University of Sheffield
Department Name: Civil and Structural Engineering
Abstract
Fretting fatigue refers to the damage occurring at contact area between two materials and is associated with the simultaneous action of a small oscillatory motion and a remote cyclic force. In metallic materials undergoing in-service time-variable loading, given the features of the nominal load history, fretting leads to an increase of fatigue damage as compared with that in the absence of fretting. Fretting fatigue is always a matter of concern to structural engineers since it can remarkably reduce the in-service lifetime of important structural parts such as, for instance, threaded pipe connections, bladedisk attachments in gas/steam turbines, and aero-engine splined couplings. By making use of the "notch analogue" concept, the aim of this research is to formalise and validate a novel methodology specifically devised to estimate lifetime under variable amplitude (VA) fretting fatigue by directly assessing the local linear-elastic multiaxial stress fields damaging the material
in the vicinity of the contact region.
in the vicinity of the contact region.
Organisations
People |
ORCID iD |
| Luca Susmel (Primary Supervisor) | |
| Cedric Teuchou Kouanga (Student) |
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| EP/N509735/1 | 01/10/2016 | 30/09/2021 | |||
| 1965965 | Studentship | EP/N509735/1 | 01/10/2016 | 06/05/2021 | Cedric Teuchou Kouanga |
| Description | I formalized a design tools to be used to predict the lifetime of material subjected to constant amplitude (CA) and variable amplitude (VA) fretting fatigue loading. I quickly validated the methodology with the CA fretting fatigue experimental data taken from the literature. This achievement was published to the International journal of fatigue. I am currently validating this design tools by running fretting fatigue experiment under CA and VA loading . The results of the experiment will be used to validate the proposed design methodology. The material to be investigated for fretting damage is the engine block and engine liner material (cast iron). To used the proposed design tools to investigate fretting damage of the cast iron, the fatigue properties of the material need to be estimated by experiment. I have successfully estimated the fatigue properties of cast iron by running several fatigue experiments at the University of Sheffield. |
| Exploitation Route | My findings will be used by company in the aerospace and manufacturing sector as a design tools to predict the end of life of mechanical assembly subjected to fretting fatigue loadings. Also, the design tools will be used in academic to investigate fretting damage on new materials such as 3D printed materials |
| Sectors | Aerospace, Defence and Marine,Manufacturing, including Industrial Biotechology |
| URL | https://www.sciencedirect.com/science/article/pii/S0142112318300975 |
| Description | I formalized a design methodology to estimate lifetime of mechanical assembly subjected to constant amplitude fretting fatigue loading. The methodology was validated with experimental data taken from the literature. This achievement work has been published to the International Journal of Fatigue. Also, I presented this research findings at the International conference of Fatigue, Fracture and Wear (July 2018, Ghent University, Belgium). Several industry sectors attended the conference. My published journal and conference papers are currently been view by industries, designers and the whole scientific communities. |
| First Year Of Impact | 2018 |
| Sector | Aerospace, Defence and Marine,Education,Manufacturing, including Industrial Biotechology |
| Impact Types | Economic |