Engineer Design

Qiang Liu

***** ****** **** **. ******** Valley, CA 92708 *******@*****.*** 1-949-***-**** (Please

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Visa Status: US Green Card holder

TECHNICAL SKILLS, PhD with over 12 years’ experience in Product Design, Stress analysis &

Manufacturing.

1. Expert on solid mechanics, and familiar with fluid mechanics.

Hand stress calculations using Timoshenko, Bruhn, Roark’s formulas.

Non-linear and Linear Stress analysis, Dynamics, Damage tolerance and fatigue analysis on composites,

metals and plastics using (Finite Element Analysis) FEA tools: Cosmos, ANSYS, LS-DYNA, Patran,

MSC.Nastran. Develop routines to support FEA.

Design component and prototype tests.

2. Computer Aided (Product and mold) Design using Solidworks, Pro-E, UG, CATIA.

3. Fiber Composite fabrication techniques: Filament winding, Fiber/Tow Placement, Compression

Molding, Bladder Molding, Hand Lay-up, Vacuum Bagging, Autoclave, Prepreg, RTM and VARTM.

4. Polymer material product rotational molding, blow molding. Familiar with material processing:

forming, machining, welding, heat treating, etc.

5. Statistical design and analysis, Design of Experiment, SAS, Minitab; Statistical process control.

6. Material Tests per ASTM, ISO, MIL-HBK, and Failure analysis.

Physical, Thermal, Rheological and Chemical Characterizations: DSC, DCA, TGA, DMTA, FTIR,

Raman, NMR, SEM, XPS, Fluorescence, Auger, Nano-Indentation, AFM, Rheology.

7. Computer programming through Labview, Matlab, Fortran, Python.

WORK EXPERIENCE

Sep 2010 to Oct 2012 Blade Design & Stress Engineer, Modular Wind Energy, Huntington Beach, CA

• CAD Design, Composite lay-up design and Stress analysis (Hand calculation and FEA) for Wind

Turbine Blade

• Blade structure dynamic analysis.

• Design component and prototype tests. Set up and monitor the blade static and fatigue test

• Composite manufacturing process development for blade components and assembly: Wet Lay-up,

Prepreg, Resin Infusion, Vacuum bagging.

• New material development for blade components

Jan 2008 to Dec 2009 Composite Design Engineer, Quantum Technologies, Inc., Lake Forest, CA.

Work on Hydrogen and Natural gas storage pressure vessels, with plastic / metal liners, carbon or glass

fiber reinforced composites to support the load, used in aerospace and automotive industry.

• CAD Design, Stress analysis, damage tolerance and fatigue analysis of composites, metals, and O-

Rings, plastics in pressure vessels.

• Supervise the production line and QA, Instruct material processing conditions.

• Rotational Molding and Blow molding Development for Plastic Liners;

• Investigate on new processes and materials to reduce product cost, improve weight efficiency, improve

the heat resistance for aerospace applications.

• Composite matrix resin formulation.

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Qiang Liu

18239 Crater Lake Ct. Fountain Valley, CA 92708 *******@*****.*** 1-949-***-**** (Please

Email First)

June 2006 to May 2007 Research & Development Engineer, Easton Sports, Inc., Van Nuys, CA

Work on sporting goods, (Ball Bats, Hockey, Bicycle seat tube, Fork, Front triangle, seat stay, chain stay,

Helmet, Golf club).

• CAD Design, Stress analysis, damage tolerance analysis of composites, metals, plastics, rubbers

• Instruct the manufacturing processes for ball bats and bicycle components: RTM, VARTM, Hand Lay-

up, Bladder molding, vacuum bag molding.

• Investigate on new composite materials and processes for sporting goods.

• Composite Matrix resin formulation development for prepreg and filament winding.

Aug 2001 to Jan 2006 Research Assistant, Institute of Materials Science, Storrs, CT Research&

development, and help local industry to trouble-shoot product design and manufacturing issue.

• Investigation of the effect of reinforcement architecture and surface coatings on composite mechanical

& fatigue properties, with application in aerospace and transportations.

• Equipment design, fluid flow in-process monitor and control for RTM, VARTM.

• Elastomer and composite Material testing per ASTM, ISO, MIL-HDBK standards.

• CAD design, Composite manufacturing process development for aerospace and civil infrastructure

customers: Hand lay-up, Compression molding, RTM, VARTM, Autoclave;

• Evaluate structure Mechanical Performance, Failure analysis & Durability Prediction.

Aug 1998 to July 2001 Composite Engineer, Huaxia Chemical Corp., Shijiazhuang, China

• Process development: hand lay-up, infusion, vacuum bagging of aerospace and automobile

components

• Coupon design and Characterization of polymer composites

• Thermoset Resin Compounding

EDUCATION

PhD in Polymer Composites, University of Connecticut– Storrs, CT

Master Degree in Polymer Science, University of Connecticut– Storrs, CT

Bachelor in Mechanical Engineering, Huazhong University of Science & Technology, China

PUBLICATIONS & PATENTS

Hold 1 US patent on composite design in pressure vessels, “HIGH PRESSURE STORAGE DEVICE

AND METHOD”, Patent #: US 20100294776A1

Have one US patent in blade design being applied.

Currently hold 2 Chinese patents on type IV pressure vessel seal design: Patent #: 201010188786.6;

201020207920.8

Have 9 Publications in Internationally accredited journals on composite mechanical properties and

durability.

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