Influence of pad span on fretting fatigue behaviour of AISI 304 stainless steel
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The present work deals with the influence of pad span on fretting fatigue behaviour of AISI 304 stainless steel. Relative slip is one of the three primary variables influencing fretting fatigue behaviour. The relative slip can be modified by changing the pad span and/or cyclic stress. In the present study, the effect of relative slip was studied at different cyclic stress levels and by using fretting pads with three different pad span values (15, 20 and 30 mm). The relative slip increased with an increase in pad span and cyclic stress. Samples tested with fretting pads having longer pad span (30 mm) exhibited longer lives. Though the specimens tested with pads having longer pad span experienced higher frictional stress and tangential force coefficient compared with those tested with pads having smaller pad span (15 or 20 mm), the relative slip values were larger in the former. Due to larger relative slip values it was assumed that small cracks initiated by fretting fatigue would have been worn away due to wear damage. Due to this the specimens tested with pads having longer pad span exhibited enhanced fretting fatigue lives. More deformation-induced martensite formed in the samples tested with pads having longer pad span owing to longer lives.
KeywordsFatigue Martensite Cyclic Stress Frictional Stress Relative Slip
This work was supported by the Department of Science and Technology, Government of India under SERC Fast Track Scheme 2001–2002 (project number SR/FTP/ET-183/2001).
- 2.Dobromirski JM (1992) In: Attia MH, Waterhouse RB (eds) Standardization of fretting fatigue test methods and equipment, ASTM STP 1159. American Society for Testing and Materials, Philadelphia, USA, p 60Google Scholar
- 4.Sato K, Fuji H (1984) J Jpn Soc Mech Eng 53:196Google Scholar
- 7.Favrow LH, Werner D, Pearson D, Brown KW, Lutian MJ, Annigeri BS, Anton DL (2000) In: Hoeppner DW, Chandrasekaran V, Elliot CB (eds) Fretting fatigue: current technologies and practices, ASTM STP 1367. American Society for Testing and Materials, West Conshohocken, USA, p 391Google Scholar
- 8.Anton DL, Lutian MJ, Favrow LH, Logan D, Annigeri BS, ibid, p 119Google Scholar
- 13.Hills DA, Nowell D (1994) In: Mechanics of fretting fatigue. Kluwer Academic Publishers, Dordreht, The Netherlands, p 165Google Scholar
- 14.Ramakrishna Naidu NK, Ganesh Sundara Raman S (2005) Int J Fatigue 27:323Google Scholar
- 16.Ochi Y, Kido Y, Akiyama T, Matsumura T (2003) In: Mutoh Y, Kinyon S, Hoeppner DW (eds) Fretting fatigue: advances in basic understanding and applications, ASTM STP 1425. American Society of Testing and Materials, West Conshohocken, PA, USA, p 220Google Scholar
- 17.Puglia A, Pratesi F, Zonfrillo G (1994) In: Waterhouse RB, Lindley TC (eds) Fretting fatigue, ESIS 18. Mechanical Engineering Publications, London, UK, p 219Google Scholar
- 18.Rayaprolu DB, Cook R (1992) In: Attia MH, Waterhouse RB (eds) Standardization of fretting fatigue test methods and equipment, ASTM STP 1159. American Society for Testing and Materials, Philadelphia, USA, p 129Google Scholar