Manufacturing Engineering

Development of Simplified Hybrid Joint Model in Dissimilar Materials 

Shape Memory Polymer Applied Smart Bumper Concept Research 

Application Technique of CFRP for Weight Lightening to Conveyor System of Car Body

Correlation between DAS and Mechanical Properties

Proedicting Hardness of Crankshaft After Heat Treatment (selected as Best Project in 2012)

-Predicting heat treatment quality (shape of treated zone, hardness)

via ultrasonic test

-Real-time feedback is possible by shorten testing time

High-Performance Vacuum Valve for Aluminum Die Cast  (selected as Best Project in 2013)

- Vacuum performance assessment by comparison between designed and existing vacuum valve

- Software development by acquired high vacuum level information 

 Development of the Optimized Manufacturing Process by 

Analyzing the Effective Parameters of the Indented Bus Side Panel (selected as Best Project in 2014)

- Predicting heat treatment quality (shape of treated zone, hardness)

via ultrasonic testing

- Real-time feedback is possible by shorten testing time 

 Wet Blasting as a Deburring Process for aluminum (selected as Best Project in 2015) 

- Deburring experiments on Aluminum alloy by wet blast process

- Providing wet blast process conditions for deburring aluminum alloy 

Development of Techniques for Fatigue Life Estimation of Spot Welds 

Fatigue is the most critical failure mode of spot-welded joints in automobiles. Since the spot welds in the assembled vehicle generally are situated in complex geometries under multi-axial loading, the most effective tool for fatigue life estimation might be the direct strain measurement. Here, a practical and reliable technique for fatigue life prediction of spot-welds based on direct strain measurement is proposed. The developed technique shows that the fatigue life of spot welds can be estimated by a multiple strain-gauge pattern attached to the outer surface of the overlap sheets near the spot weld. 

Fig 1. Spot weld in automobile body frame and fatigue fracture 

Fig 2. Developed strain-gage kit and spot welding model applied multi-axial load 

Fig 3. Specimen test and on-vehicle test for verification

Development of a Coupled Meshfree/Finite Element Method for Automotive Crashworthiness Simulation 

We investigate coupled meshfree and finite element method for crashworthiness analysis, to supplement the reliability defection caused by limitation at the system applied mesh. 

Fig 1. Meshfree/FE method application in vehicle 

Fig 2. Meshfree method component analysis 

Fig 3. Dummy impact analysis