“Fatigue Life Estimation of Pressure Reducing Valve Diaphragm”
Sanjay S. Sutar1, Pravin R. Kubade2, Sunil S. Jamadade3
1Sanjay S. Sutar, Asst. Prof. Department of Mechanical and Production Engineering, Kolhapur, Maharashtra, India.
2Pravin R. Kubade, Asst. Prof. Department of Mechanical and Production Engineering, Kolhapur, Maharashtra, India.
3Sunil S. Jamadade, Asst. Prof. Department of Mechanical and Production Engineering, Kolhapur, Maharashtra, India.
Manuscript received on January 16, 2015. | Revised Manuscript received on February 10, 2015. | Manuscript published on February 28, 2015. | PP: 180-188 | Volume-4 Issue-3, February 2015. | Retrieval Number: C3788024315/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Predicting the fatigue life of component exactly under the operating conditions is a challenging task in design engineering. In this work, fatigue life of pressure reducing valve diaphragm has been predicted which works under steam pressure. The fatigue life is predicted analytically by Goodman diagram using stress values given by different approaches suggested by M. Di Giovanni, Roark’s, Timoshenko and Nadai. The stress and deflection values given by different analytical approaches have shown good agreement with Finite Element Analysis (FEA) results. Finally experimental fatigue testing for fatigue life estimation of the pressure reducing valve diaphragm has been done for its maximum stroke.
Keywords: Pressure reducing valve, Rigid center, endurance limit, Fatigue life.