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Mechanical Design

Location:
Atlanta, GA
Posted:
February 22, 2021

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Resume:

Alex Tzu-Tying Hung

Phone: +1-626-***-**** Email: adkenj@r.postjobfree.com Website: www.linkedin.com/in/alexhung0120 Georgia Institute of Technology (Georgia Tech) Expected Graduation: May 2021 Mechanical Engineering, M.S. Overall GPA: 3.87

University of California, San Diego (UCSD) September 2015 - March 2019 Mechanical Engineering, B.S. Overall GPA: 3.91

Major GPA: 3.98

Engineering Projects

NASA’s BIG Idea Challenge 2021 August 2020 –Present

(Title: Research and Design Specialist)

Objective: Generate a design concept with a systematic design process for the Artemis Mission in 2024 that minimizes plume/surface interactions which would cause damage on the lunar lander and nearby equipment

- Gathered customer needs and identified the engineering requirements to understand the scope of the problem

- Brainstormed preliminary concepts with formal concept generation methods, such as 6-3-5, TRIZ, and WordTree methods

- Narrowed down and modified the concepts to verify and allow for feasibility and obtained final decision with Pugh Charts

- Performed stress analysis to calculate the design constraints of the struts and the aluminum honeycomb

- Utilized multiple optimization methods to determine and verify the optimal dimensions of the system while ensuring the safety of the astronauts and the structural integrity of the lunar lander Link to the Video: https://www.youtube.com/watch?v=nbwyFnVfm8s&feature=youtu.be Students for the Exploration & Development of Space (SEDS-UCSD) October 2017 – March 2019

(Project Title: Vulcan-II – Propellant Feed Team Lead) Objective: Design, manufacture, assemble, launch, and recover a 20ft LOX + RP-1 rocket pressured by Helium gas

- Calculated the required pressure/volume of the LOX tank and Fuel tank with MATLAB and Excel sheet

- Obtained the necessary mass of pressurant gas (Helium gas) to achieve certain flow rate of the propellants

- Performed heat transfer analysis to determine insulation effectiveness for LOX tank

- Constructed and optimized P&ID parts (fittings, valves, regulators, etc.)

- 3D Designed the complete plumbing system of the rocket using Solidworks Routing feature

- Led the team to construct the entire propellant system on the rocket and perform leak check to ensure safety

- Performed cold flow with liquid nitrogen and water to confirm the reliability of the system Link to the Website: https://www.sedsucsd.org/projects/vulcan2/ Two Photon Microscope Support Structure October 2018 – March 2019

(Title: System Design lead)

Objective: Design and manufacture a 4-Degrees-of-Freedom supporting structure that can make a 25kg brain-imaging microscope easily maneuverable in the operating room

- Designed a unique double rotation structure for the user to easily change the rotation of the microscope

- Performed stress analysis to determine the optimal thickness of the struts

- Minimized vibration down to micron scale with FEA analysis by adding active shock absorbers to the structure

- Implemented electromagnetic brake onto the rotation system as a fail-safe feature to ensure the safety of the patients Link to the Website: https://sites.google.com/a/eng.ucsd.edu/156b-2019-winter-team09/home Worldwide Mars Rover Competition (University Rover Challenge) November 2016 – December 2017

(Yonder Dynamics – Motion Team (Hand Design Lead)) Objective: Design and manufacture a Mars rover to compete in the University Rover Challenge at Utah in June

- Led hand design to complete tasks, such as picking up tools, typing on a keyboard, and lifting up a 5kg gas tank

- Created a 3-degrees-of-freedom hand design with 3D printing, Laser cutting, and water jetting using stepper motors

- Developed a 6-wheel drive system to drive a 50kg rover through rocky and sandy terrains and to complete a 1m drop Link to the Website: https://yonderdynamics.org/

Robot Olympics (System Design Lead) April 2016 – June 2016 Objective: Collaborated with a team of 4 engineers on designing a robot using sheet metal, acrylic, and 3D printing

- Led general system design to drive and rotate the robot and lift 500g medals up onto a 15in high podium with only 3 geared DC motors and two 5VDC power supply

- Created 3D animation on Inventor to analyze the concepts behind the movement of the robot

- Performed machine performance analysis, energy analysis, and force/torque analysis with MathCAD Link to the Website: https://sites.google.com/a/eng.ucsd.edu/mae3-robots/2016-spring/team-39 Research Experience & Publication

Direct Digital Manufacturing of Heterogeneous Multifunctional Components (HMCs) through Scanning Laser Epitaxy (SLE) October 2019 – Present

Objective: Design and implement a workstation for conducting scanning laser epitaxy (SLE), a metal additive manufacturing technique of high value components in conventionally non-weldable nickel-base superalloys

- Designed a 3 DoF system for positioning the substrate and heating system inside of the glovebox with Solidworks

- Designed and manufactured an induction heating coil to pre-heat the substrate and obtain a more robust print

- Constructed an air knife configuration to prevent the hot air generated by induction coil from damaging the glovebox

- Developed a plumbing system for water cooling and successfully save $10K by reducing the number of chillers needed by performing fluid analysis for the required flow rate

- Developed the feedthrough system on the glovebox for all signal transferring, electrical, and water-cooling connections Link to the Website: https://www.ddm.me.gatech.edu/page8/page8.html Bioinspired Feather Mechanism Design with SolidWorks September 2015 – December 2018 Objective: Fabricate 3D models that simulate and elaborate the specific mechanisms of a feather

- Calculated the appropriate temperature and extrusion speed for a flexible material, Ninjaflex, to ensure printing quality

- Designed different shapes of hook and grooved barbules to simulate the adhesive mechanism of a feather

- Performed tension test with Instron for the different models to optimize the design of the shapes of the hooks and grooves

- Implemented flexible membrane flaps on the barbules to demonstrate the directional permeability of a feather

- Conducted Wind tunnel test on the air permeability to analyze the importance of the membrane flaps on the barbules

- Developed barbule-inspired 3D structure to allow for tailored air permeability Publications:

1. Sullivan, T. N., Hung, T.-T., Velasco-Hogan, Audrey, Meyers, M. A., Bioinspired avian feather designs, Materials Science and Engineering: C, 10.1016/j.msec.2019.110066, (110066), (2019). https://doi.org/10.1016/j.msec.2019.110066 2. Sullivan, T. N., Chon, M., Ramachandramoorthy, R., Roenbeck, M. R., Hung, T.-T., Espinosa, H. D., Meyers, M. A., Reversible Attachment with Tailored Permeability: The Feather Vane and Bioinspired Designs, Adv. Funct. Mater. 2017, 27, 1702954. https://doi.org/10.1002/adfm.201702954 MRI Compatible Robot Biopsy and Intervention September 2018 – March 2019 Objective: Fabricate a robot that can perform lung biopsy inside an MRI machine

- Designed and manufactured a strong base stand to stabilize the robot by decreasing the deflection 100 times smaller

- Performed Finite Element Analysis on the entire robot to identify stress concentration point and improve the design

- Constructed a 4-degrees-of-freedom robot arm using cable drive to allow maximum movement of the arm

- Designed a clutch-brake system for the hydraulic system that was used on all rotations of the robot to allow more travel Link to the Website: https://www.ucsdarclab.com/mri-ct-compatible-robots Engineering Skills

CAD Software: Solidworks, Autodesk Inventor, AutoCAD Other Software: Ansys, MathCAD, LabView, Microsoft Office Software Languages: MATLAB, Python, Arduino

Manufacturing: 3D Printing, Laser Cutting, General machining, Tube Flaring, Soldering Mechanical Equipment: 3-axis Mil, Lathe, Power Drill, Band Saw, Sander Electrical Equipment: Arduino, Oscilloscope, DMM, Thermocouple, Op Amp, Function Generator Related Engineering Coursework

Undergraduate level:

Elements of Materials Science Signals and System Fluid Mechanics Statics Space Mission Analysis and Design Mathematical Physics Linear Control Heat Transfer Dynamics Spacecraft Guidance Computational Methods Linear Circuits Thermodynamics Vibration Propulsion Experimental Techniques Autonomous Vehicles Solid Mechanics Computer-Aided Design Embedded Control and Robotics Graduate level:

Finite-Element Method Computer-Aided Design Manufacturing Processes & Systems Modeling & Simulation Design Designing Open Engineering Systems Rocket Propulsion Optimization in Engineering Design Engineering Design Languages

• English – fluent • Chinese (Mandarin) – fluent



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