Residual life estimation of structural beam using experimental and numerical modal analysis methods
Abstract
A structural beam is a common element in many mechanical structures such as ship propeller shaft, crane boom, and air craft wings. In the present paper experimental and numerical modal analysis are carried out for estimating the damage detection, geometric location of the damage, severity of damage and residual life of structural beam to prevent unexpected failures of the mechanical structures. Experimental and numerical modal analysis results for healthy and cracked beam are compared for validation of numerical methodology used in the present paper. Experimental modal analysis is performed on both healthy and cracked beam with the help of impact hammer, acceleration sensor and FFT analyzer associated with EDM (Engineering Data Management) software. Modal tests are conducted using impact method on selected locations of the entire healthy and cracked beam to find the first three natural frequencies, which are used to detect the presence of damage and geometric location of the damage. Three parametric studies are carried out to know the effect of crack depth, crack location and crack orientation on the natural frequencies of the cracked beam. Finally, residual life of a healthy and cracked beam was estimated using Basiquin’s equation and finite element analysis software called ANSYS 18.1.
Downloads
Author Biographies
Gandam Anand Siva received his Master of Technology in computer aided analysis and design (CAAD) from Gayatri Vidya Parishad College of Engineering (Autonomous), in 2019.Currently he works as an assistant professor of department of mechanical engineering in Satya Institute of Technology and Management(SITAM) . His scientific interests focus on problems concerning vibration monitoring, design optimization and diagnostics of machining processes. He has presented in 2 international conferences.
Shinagam Ramakrishna received his PhD in Mechanical Engineering (specialisation: CFD, Acoustics Optimization, vibrations, composites, Tribology) from Andhra University in 2010, Master of Technology from J.N.T.U.K., Kakinada in 2005.Since 2011, has been a Researcher for the Department of Mechanical Engineering in Gayatri Vidya Parishad College of Engineering (Autonomous) and, where currently he works as an Associate Professor. His scientific interests are focused on issues related with CFD, Acoustics Optimization, vibrations, composites, Tribology. He successfully completed 3 research projects and 21 consultancy projects. He has published more than 50 scientific papers in various international and national journals.
Copyright (c) 2020 Ganda Anand Siva, Shinigam Ramakrishna
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain full copyright to their individual works.
The Journal of Mechanical and Energy Engineering (JMEE) publishes fully open access articles.
Open Access benefits:
- High visibility – all articles are made freely available online for everyone worldwide, immediately upon publication.
- Increased visibility and readership.
- Rapid publication.
- All articles are CC BY licensed. The final article can be reused and immediately deposited in any repository.
- Authors retain the copyright to their work.
By publishing with us, you retain the copyright of your work under the terms of a Creative Commons Attribution 4.0 International (CC BY) license.
The CC BY license permits unrestricted use, distribution and reproduction in any medium, provided appropriate credit is given to the original author(s) and the source, a link to the Creative Commons license is included, and it is indicated if any changes were made. This means that you can deposit the final version of your work in any digital repository immediately after publication.
We are committed to providing high-level peer review, author and production services, so you can trust in the quality and reliability of the work that we publish.
