Howard C. Profile

5.0

(1 review)

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$25 USD / hour

huntsville,

united states

$25 USD / hour

It's currently 6:31 PM here

Joined March 18, 2015

0 Recommendations

Howard C.

@shuif

5.0

(1 review)

3.8

$25 USD / hour

huntsville,

united states

$25 USD / hour

100%

Jobs Completed

100%

On Budget

100%

On Time

N/A

Repeat Hire Rate

Mechanical Engineer, Solidworks, FEA

I am a dedicated and innovative graduate degreed Mechanical Engineer with Solidworks and Pro/E computer-aided drafting (CAD) skill, experience in automotive, packaging and manufacturing industry. Previous working experience in of vibration, thermal and stress analyses in designing and developing electric motor and utilizing various manufacturing methods: metal stamping and CNC machining, sheet metal fabrication and welding.

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Contact Howard C. about your job

Portfolio

Structural FEA on door climb pull up bar. The results shows the maximum stress occurs near at the contact area, where re-enforce structure should be added.

Door Climb Pull up FEA

The span/length of the cantilever beam across the wind tower are different at every level. They are longer at lower base then on the upper levels.
The reason is that the tower can support more bending moment at lower level and also the bigger the spread of the turbine blade, the more efficient/power generation comes from the generator.

Wind Turbine Design

1824292

CAD Portfolio of Howard Chang

Simple initial Claw Shell design hold together using living hinge all in one single piece.

Clam Shell

This is the temperature distribution of the magnet inside the motor, where the heat source is mainly coming from the copper wire at high current operation.

Thermal FEA inside the motor

Solar panel designs to collect the sunlight using optimal angle of elevation toward the sun to absorb the light and heat into electrical energy.

Solar Photovoltaic and Thermal Air Collector

Door Climb Pull up FEA

Wind Turbine Design

1824292

CAD Portfolio of Howard Chang

Clam Shell

Thermal FEA inside the motor

Solar Photovoltaic and Thermal Air Collector

Reviews

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Showing 1 - 1 out of 1 reviews

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5.0

$150.00 USD

Panoramic Glass moving door screen

very patient and professional engineer. very cooperative. did his job to my satisfaction. found the solution for every problem. and submitted all required documents on time and as required.

CAD/CAM

Manufacturing Design

Mechanical Engineering

Product Design

Structural Engineering

Talia S.

@mondix

•

9 years ago

Experience

ITRI

Mar 2012 - Jul 2014 (2 years, 4 months)

Research and Development of Electric Motor for Automotive manufacturer and Electric Vehicle  Develop powertrain components, safety systems in 3D CAD and implement Design for Manufacturing (DFM): plastic injection molding, metal stamping and CNC machining. Create 2D manufacturing drawings with geometric dimensioning and tolerance (GD&T) and conduct tolerance stack-up analysis.  Perform electrical and mechanical design of brushless motor and electro-mechanical assembly for vehicle system using FEA & CFD tools: Ansys Mechanical, Maxwell electromagnetics, Fluent and MotorCAD.  Perform root cause analysis and participate in Design Failure Mode and Effects Analysis (DFMEA) and Design of Experiments (DOE) to meet the design requirement and verification with customer  Implement motor control algorithm such as vector control, field oriented control, using Auto-C code generation in Matlab/Simulink tool for embedded systems and microcontrollers.

Z Automation

Mar 2008 - Dec 2011 (3 years, 9 months)

Design and manufacturer of packaging and automated electromechanical assembly equipment  Generate 3D component parts and assembly drawings utilizing Solidworks and AutoCAD.  Design electro-mechanical equipment includes H/V cartoner, case packer, sealing, trimming and conveyor station with sheet metal enclosure. Assembly composed of mainly chain drive, actuators, pneumatic cylinders, motors, solenoid valves and other mechanical components.  Create working drawings to support manufacturing workshop with the knowledge of weld symbols and geometric tolerances.  Establish and monitor Bill of Materials for existing and new assemblies.  Work directly with the machinists, assemblers, mechanics, and other engineers on change orders, redesign and rework drawings.

Education

Mechanical Engineering

2004 - 2008

(4 years)

Qualifications

2009

Publications

Electromagnetic and Thermal-Fluid Coupling Analysis of an Interior Permanent Magnet Motor for Electric Vehicles

IEEE

This paper proposes a coupling analysis of the electromagnetic and thermal-fluid fields in an interior permanent magnet motor for electric vehicles. Both electrical and magnetic materials have temperature-dependent properties. The power loss produced by the electromagnetic analysis reheats the motor and its rise in temperature alters the material properties as well as motor performance. The temperature-dependent power loss is used as a heat source to create a lumped-circuit thermal model in terms of equiva