Mechanical Engineer Engineering

Qubo Li, Ph. D

Tomball TX *****

(***) *** – **** ******@*****.***

SUMMARY

Senior mechanical engineer with over 10 years of mechanical design and product development. Expertise machine design and optimization for its best structural and thermal performance. Fluent in English, Chinese and Korean with international experience in countries in Asia and the United States.

Analysis using both FEA and CFD computational tools

3D CAD modeling experience with UG NX, Solidworks, Pro.E

Fast learner with good problem-solving abilities

PROFESSIONAL EXPERIENCE

Meggitt OECO, Portland, OR

Power supplies and magnetic component manufacturer for aerospace industry

Senior Mechanical Engineer

Develop structure, fluid thermal design and analysis to aircraft power generator 2016 ~ 2017

Analyzed causes of failure to motor rotor using analytical FEA method, improved rotor assembly design and customer satisfaction

Designed and selected ball bearing to meet bearing life requirements for aircraft electric machine

Designed cold plate to cool power electronics, achieved both thermal cooling and weight reduction goals in F22 power converter development program

Developed thermal management to airplane power generator using CFD thermal analysis

Developed new generation of V band coupling to connect gear box with power generator to meet minimum weight and best structural performance, using nonlinear FEA structure and harmonic forced vibration analysis

FMC Technologies, Houston, TX

Subsea equipment manufacturer for oil and gas industry

Engineering Specialist 2013 ~ 2016

Delivered structure, thermal fluid design and analysis to subsea equipment

Investigated subsea gate and valve tungsten carbide coating failures as a project lead engineer, discovered root causes to coating short term and long term failures using 2D FEA that saved company 3 million dollars on 13k 300F HPHT gate/valve qualification test

Designed seal test fixture tools using hand calculation and FEA modeling, achieving first seal successful qualification test for 15K 400F HPHT requirements within FMC Technologies

Designed HPHT 5" 15k flange for subsea Christmas tree using ANSYS macros parametric FEA non-linear model per requirements from ASME Section VIII-Div 3, achieving stronger alignment with company’s mission and goals

Developed numerical (CFD and FEA) thermal and mass transfer models to predict subsea equipment thermal performance (such as Shell Stone XT, Anadarko Heidelberg XT, Statoil Snorre PWHT, Exxon Julia manifold) that optimized equipment thermal insulation cost and improved customer satisfaction.

Rotating Equipment Engineer 2012 ~ 2013

Managed hydraulic and thermal design to subsea multiphase pump

Developed multiphase flow code using classic models and produced flow map to accurately predict pressure drop for multiphase flow in the pipe

Developed seal technology for high speed multiphase 2MW heliaxial multiphase pump and explored various seal concepts achieving pump high performance requirements

Developed hydraulic tools for rotating equipment, such as seal, bearing, rotor and stators, delivering fast and accurate estimation of pump dimension at different power requirements

Danotek Motion Technologies, Canton, MI

Startup Company for development of wind power generator and power converters

Mechanical Development Engineer 2010 ~ 2012

Directed thermal management system design to power generator and converter

Designed hydraulic fluid flow, heat transfer and thermal management system to power generator and converter, achieving 98% accuracy by comparing with test results

Performed structural and modal analysis to rotor assembly and heat exchanger using FEA, improved customer satisfaction towards safety factor margin and fatigue life requirements

Provided engineering solutions to reduce electric machine installation procedures and saved company manufacturing cost by $50,000

Cooperated with purchasing department for global parts purchasing achieving company cost saving goals.

Proposed innovative ideas for better cooling system design to the electric machine, which have been published as patents

Cooperated with test team to obtain thermal data, analyzing and documenting the data as technical reports

Michigan State University, East Lansing, MI

Working with startup company Verde Turbo Technologies for development of engineering products in the geothermal, natural gas and oil industries

Research Engineer 2007 ~ 2010

Managed product development of a novel composite turbo impeller

Developed 1D aero-thermal model to simulate axial impeller compressing water vapor as refrigerant, achieving high compression pressure of 2 under vacuum condition

Optimized flow performance using computational fluid dynamics (CFD) software FLUENT, confirming best design from 1D calculation

Analyzed composite impeller’s rotating performance such as stress-strain behavior and fatigue life using finite element method (FEA), ensuring product design meet customer high requirements

Designed and conducted experiment to test multistage axial impeller performance under vacuum, delivering final product per customer requirements on time.

Documented test results as technical reports and in charged technical support for new product design/introduction and any product quality issues

Mentored three (3) young engineers in the group developing turbo compressors

LG Electronics Digital Appliance Company Lab, Changwon, South Korea

Global manufacturing lead of HVAC products

Thermal Engineer 2006 ~ 2007

Thermal management to compressor and refrigeration cycle

Tested linear compressor performance and obtained test data such as temperature and pressure changes in refrigeration cycle; achieved 5% energy saving by optimizing cycle process and re-design of defrosting heater

Optimized compressor fan for its best position and rotation and improved refrigerator energy efficiency for 3%, reduced aerodynamic noise for 10%

Participated in supplier sourcing such as manufacturing PCB boards in China, achieving company cost saving goals.

Reduced mass manufacturing cost of compressor for 10% with the aid of six sigma analysis

Developed and implemented creative waste elimination methods to reduce company cost for $10,000 annually

Collaborated with R&D headquarter communication for Training International Engineers in LG Electronics

SELECTED PUBLICATIONS

Conference papers (out of 7):

Demiss, A., Q, Li and N. Müeller, “Multi stage variable speed turbo compressor for enhancing seasonal energy efficiency ratio of air conditioners using R718 as refrigerant”, ASME-Turbo Expo 2010, GT2010-22502,

Li, Q., J., Piechna and N. Müeller, “Static, dynamic and failure behavior of a novel axial composite impeller for water chiller”, ASME-IMECE2010-39817

Li, Q. and J., Piechna and N. Müeller, “Aerodynamic Design and CFD Analysis of a Novel Axial Compressor”, 40th Fluid Dynamics Conference and Exhibit, AIAA, 2010, Chicago

Li, Q., J.,Wang and Norbert Müeller, “On the realization of Filament wound composite impeller for water refrigerant”, ASME-IMECE2009-12786

Journal papers (out of 7):

Li, Q., G. Restivo and N. Muller, “Using Filament Winding Approach to Manufacture Composite Impellers for Water Chiller”, Journal of Advanced Materials, 2010, Volume 42, Issue 4, Pages 45-55.

Li, Q., Piechna, J and N. Müeller, “Fatigue analysis of filament woven composite axial compressor”, Materials and Design, Volume 32, Issue 4, April 2011, Pages 2058-2065

Li, Q., Piechna, J and N. Müeller, “Numerical simulation of novel axial impeller patterns to compress water vapor as refrigerant”, Energy, Volume 36, Issue 5, May 2011, Pages 2773-2781

Li, Q., Piechna, J and N. Müeller, “Design of a novel axial impeller as a part of counter-rotating axial compressor to compress water vapor as refrigerant”, Applied Energy, Volume 88, Issue 9, September 2011, Pages 3156-3168

Li, Q., Piechna, J. and N. Müeller, “Thermodynamic potential of using a counter rotating novel axial impeller to compress water vapor as refrigerant”, International Journal of Refrigeration, Volume 34, Issue 5, August 2011, Pages 1286-1295

Patents

Electric machine cooling system, Patent Number 9118232, 201******** and 201********

EDUCATION

Doctor of Philosophy, Mechanical Engineering,

Michigan State University, East Lansing, MI

Master Degree in Mechanical Engineering

Inha University, Incheon, South Korea

Bachelor Degree in Mechanical Engineering

China Agricultural University, Beijing, China

TECHNICAL SKILLS

CAD software: Simens NX, Pro E, AutoCAD

Computer language: Matlab, Visual Basic, C, C++

Computer software: ANSYS APDL, ANSYS Mechanical, CFX, FLUENT, Abaqus, SAP, Teamcenter,

Lab: test and measurement using signal generator, oscilloscope, Labview

Three language communication skills: English, Chinese and Korean

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