Term of Award

Summer 2021

Degree Name

Master of Science, Mechanical Engineering

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


Department of Mechanical Engineering

Committee Chair

Sevki Cesmeci

Committee Member 1

Jinki Kim

Committee Member 2

Mahmoud Baniasadi


In the recent years, additive manufacturing (AM) (aka 3D printing)-has become a viable alternative to traditional manufacturing due to its unique advantages, such as enabling the fabrication of complex geometries at reduced weight and costs as well as allowing on-site fabrication for maintenance and repair. One specific application area of the AM is the navy vessels. During extended voyages, the navy vessels likely require the convenience of on-site fabrication of the malfunctioned parts. However, the shipboard equipment suffers from a broad range of external excitations arising not only from the waves but also from the vessel’s engines, which poses a concern for the quality of the 3D printed parts. Thus, efficient vibration isolation systems are needed for quality production. To this end, in this study, a novel semi-active vibration isolation system called Magnetorheological-based Semi-Active Vibration Isolator (MR-SAVI for short) was proposed. A comprehensive design methodology for the MR-SAVI, including both analytical and simulation modeling, was presented. A sophisticated optimization program was created to find the optimal values of the significant design parameters. The results were discussed, and future recommendations were made for the fabrication and characterization of the device.

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