Informatics Publishing Limited

Dr. Prashant S Humnabad ¹, Dr. Hanamantraygouda M B ², S B Halesh ³

Affiliations
1 Assistant Professor ,Department of Mechanical Engineering, Sir MVIT, Bengaluru, IN
2 Assistant Professor Department of Mechanical Engineering, Sir MVIT, Bengaluru,, IN
3 Associate Professor, Department of Mechanical Engineering, Sir MVIT, Bengaluru, IN

Abstract

Fatigue is a process of progressive localized plastic deformation occurring in a material subjected to cyclic stresses and strains at high stress concentration locations that may culminate in cracks or complete fracture after a sufficient number of fluctuations. Fatigue testing is carried out using the ASTM D3479 with a notch or crack for investigating the initiation of crack. Several fatigue tests were conducted in tension-tension and/or tensioncompression loading at a frequency of 10Hz or sinusoidal wave’s frequency of 5Hz, and at constant-amplitude. The fatigue tests were interrupted by the researchers at regular intervals after a predetermined number of cycles to monitor crack advance and to observe the failure modes by various ways such as visual observation, digital camera, traveling microscope, CCD camera, etc.

Keywords

Fatigue, forging, wohler curves, silicon carbide, reinforcement.

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