Fatigue Performance in Abrasive Flow Machining

Abstract:

Surface finish and Manufacturing process has a prominent role in the fatigue life of a machine component. Fatigue strength of a material generally increases with the surface finish. But the super finishing process like electro polishing reduces the fatigue strength of the material. In Abrasive flow machining it is found that surface finish and fatigue strength always increasing. In Abrasive flow machining the fatigue strength is mainly governed by the process variables extrusion pressure, abrasive concentration and mesh size. This research studies the influence of the process variables on the fatigue strength of the material. In this study an approximate surface finish of 4μm is obtained after AFM. The effect of three process variables on the response function selected, fatigue strength, were studied. A statistical 2³ full factorial experimental technique is used to find out the main effect, interaction effect and contribution of each variable on fatigue strength. The instron machine is used to find out the number of cycles to failure of the material. The fatigue strength is obtained with S-N curve analysis.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 354-362
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.354
• Online since: July 2014
• Authors: Jose Cherian*, Jeoju M. Issac
• Keywords: Abrasive Concentration, Abrasive Flow Machining, Extrusion Pressure, Fatigue Strength, Instron, Mesh Size

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