The surface effects & various fatigue related material

The turning point of my life was when my professor, seeing the favorable outcomes of my study  which I carried out as a part of my academic project, encouraged me to publish it as a research paper which got me recognition and appreciation when it got published in IJMECH, Wireilla (An Australian Journal) in November 2015 “(research paper link). As part of my project work, I wrote my perspective on scope of weight optimization and cost reduction of crane hook. As per literature survey in my paper “Optimization & Fatigue Analysis of a Crane-hook using Finite Element Methods”, lot of research was done for the optimization of crane hook based on stress analysis. Still, there was a lot of scope of optimization considering durability analysis taking into account various fatigue related material properties & algorithms required to carry out fatigue analysis as it is of prime importance in industry. In the present paper, 3D model of an existing crane hook of trapezoidal cross-section having load carrying capacity of 30 ton is generated using CAD tools and finite element analysis is applied on the model using Ansys workbench. Using Design of Experiment (DOE), different iterations are obtained by varying the parallel sides of the trapezoidal cross-section which are taken as design parameters. Then static structural analysis is performed for different iterations and three best candidates are selected based on mass, total displacement & von-mises stress keeping objective importance of mass higher. Moving forward, fatigue analysis is carried out for the actual model & the three best candidates obtained using constant load mapping technique & considering various concepts like mean stress correction, stress combination method , surface effects & various fatigue related material properties for grade AISI 4340 150. As a result of this study, I was able to reduce the weight of the hook by 22.03% which can be helpful in reducing cost & balancing economy. At that time, I tried to take my study into industry but I was not having industry connections. I am still discussing with Smriti Forging & Engineering Co. Pvt. Ltd. & Indus Overseas on how this study can be implemented for industry benefits. The appreciation which I got after publication encouraged me even more to make great efforts in enhancing my knowledge of such topics.