A quantitative approach to evaluate fretting fatigue limit using a pre-cracked specimen
| Autor: | Shunsuke Kataoka, Yoshiyuki Kondo, Masanobu Kubota, Daisuke Takazaki |
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| Rok vydání: | 2017 |
| Předmět: |
Contact pad
Materials science business.industry Mechanical Engineering Fretting Fracture mechanics 02 engineering and technology Surfaces and Interfaces Structural engineering 021001 nanoscience & nanotechnology Fatigue limit Finite element method Surfaces Coatings and Films Crack closure 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials mental disorders 0210 nano-technology Intensity factor business Stress intensity factor |
| Zdroj: | Tribology International. 108:48-56 |
| ISSN: | 0301-679X |
| Popis: | A pre-cracked specimen, which has a 70-μm-deep crack, was used for the fretting fatigue test to understand the reasons for the change in the fretting fatigue limit due to changes in the contact pressure, position of the pre-crack, and foot length of the contact pad. The threshold stress intensity factor range to crack propagation of the pre-crack, ΔKth, was obtained by the crack growth test. The stress intensity factor range of the pre-crack under fretting conditions was then evaluated by a finite element analysis to estimate the fretting fatigue limit of the pre-crack specimen. The effects of these variables on the fretting fatigue limit were quantitatively explained by the results of the FEM and ΔKth of the short crack. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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