Shape memory polymer(SMP) applied smart bumper concept research



Application technique of CFRP for weight lightening
to conveyor system of car body



Correlation between DAS and mechanical properties




Predicting hardness of crankshaft after heat treatment (selected as best project in 2012)

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

- 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 simulations

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


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