Project works

Academically, my coursework covers 3 core disciplines- Materials, Mechanical & Naval. Consequently, the following projects, which were done as part of my degree completion at different stages, reflects the evolution of my profile. Some of them are done in a group & full credits are due to my awesome group members.

Fabrication of simple solar cell

A solar cell is an electronic device that converts light into electricity and its working principle is based on generation of potential difference at a junction of two different materials i.e the photovoltaic effect. Semiconductors are used in solar cell fabrication where energy conversion is accompanied by, first producing electron-hole pairs and then charge carrier separation. p-n junctions are used for solar cells and thus understanding properties of semiconductor and principles of conventional p-n junctions should give hints on improving cells regarding efficiency, cost, fabrication etc.

A simple solar cell was designed and processed in this project, leading to a cell efficiency of ap-proximately 5% under illumination. Its diode behavior was characterized and finally the cell performance was analyzed by solar cell simulator PC1D.

Skills Learnt/Applied: Dry etch/Wet etch, Metal deposition, Photolithography, Thin film characterization and Defect inspection metrologies

Additive manufactured helmet liners

Additive manufacturing has improved mass customization of helmets, but for non-critical applications there are still hurdles for implementation. The project discussed in this paper reviews current helmet designs and takes a deep dive into how helmet liners can be manufactured flat on a 3D printer

Our building block is modified triangular element and our target was to improve in-plane bending characters of these elements. The design incorporates feature like bubble modes, midside freedom and rotational degrees of freedom. The bubble modes modify the interior displacement field and are limited to only low order displacement. The high order displacement modes arise due to deviation from linearity translations at midpoint nodes which is dealt with midside freedom

Skills Learnt/Applied: Design research, 3 D printing

Heat transfer in shell and tube heat exchanger

The aim of this project was to computationally investigate the effect of segmented baffles on Heat Exchanger. The baffles forced laminar flow to change direction. Eventually, temperature difference for counter flow was much higher than than parallel flow, thus ensured higher heat transfer

Skills Learnt/Applied: Ansys, Advanced Engineering Math

Hydrostatic stability of water vessel

Being, a riverine country, Bangladesh has welcomed the water ways communication and yearly around 88 million passengers are carried through this route and the continuous necessity is conditionally rising despite the tragic disasters and its heavy human toll. To that note, as a student of naval architecture and marine engineering in BUET, we tried to design an inland passenger vessel, capable of carrying 350 passengers.

Skills Learnt: AutoCAD Rhino 3D, MAXSURF, Drafting