• Journal of the Korean Society of Manufacturing Process Engineers
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• v.17 no.3
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• pp.93-101
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• 2018

FDM is one of the popular 3D printing technologies because of an inexpensive extrusion machine and multi-material printing. FDM can use thermoplastics such as ABS and PLA. The 3D-printed ABS parts fabricated by FDM are attractive in the automotive industry because of their weight. A 10% reduction in weight can increase the fuel economy by approximately 7%. To use 3D-printed ABS parts as automotive parts, we should evaluate the 3D-printed parts in terms of automotive reliability. In this study, 3D-printed ABS samples were evaluated using Ono's rotary bending fatigue test. We obtained an S-N curve for the 3D-printed ABS specimen from the finite-element analysis. The S-N curve can be useful in early-stage design decisions for 3D-printed ABS parts.

• Transactions of the Korean Society of Automotive Engineers
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• v.10 no.4
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• pp.192-198
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• 2002

There are genuine parts, non-genuine parts and recycled parts which can be replaced for the repair of damaged parts of crashed cars. It is the recent trend in korea that recycled C. V joints are more popular than the genuine parts fur repairing crashed cars due to the cost. Performance of recycled C. V. joints as replacement parts was tested and analysed in this study. To examine the durability of the recycled parts, the replaced C. V joints after repair were tested and analysed periodically. The results were showed that basic performance of the recycled parts was normal. However ball cage was more frequently damaged than genuine parts. We concluded that a standard test for recycled parts is required to get a safe and durable parts.

• Proceedings of the KIEE Conference
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• 2001.10a
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• pp.51-53
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• 2001

Permanent Magnet DC Motors are widely used in Automotive parts because they have cheap price, simple structure and high torque-speed ratio. But the motor in automotive parts is required high quality, complex function and lower price than before. This paper deals with design of controller for safety function that body trap on the automotive window. The algorithm of controller can adapt variety conditions with temperature, electrical, driving, etc.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2006.05a
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• pp.337-340
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• 2006

Aluminum extruded profiles have been mostly used only a few automotive parts until now, such as roof rail, sunroof frame and bumper beams. However, Aluminum Extru-form technology, which was recently developed by foreign advanced manufacturer, made it possible to apply the aluminum extruded profiles to suspension parts of passenger and RV cars. It could be obtained by optimized billet casting, extrusion and stretch bending technology. It was possible to have the excellent weight reduction and the competitive price comparing with conventional process of aluminum for automotive parts. Combining additional process technology such as machining and joining, the application can be extended to various automotive parts. We have developed high strength aluminum alloy and fabricated subframe and suspension arm by extruforming process.

• Transactions of the Korean Society of Automotive Engineers
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• v.21 no.2
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• pp.1-8
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• 2013

Remanufacturing of automobile parts is important for increasing the recycling resources. ECU(Electronic Control Unit) systems are becoming an increasingly important part of an automobile. But production company are reported in the ECU remanufacturing industry of domestic automobile parts due to a lack of remanufacturing technology and marketability. This paper introduces the ECU of remanufacturing, also grasps the structure and the analyzes failure cause that is external factors and fault in the characteristic design and steps in the Independent ECU remanufacturing process. The ECU manufacturing industry of the US was examined. The results in this paper could be used as the system information for further remanufacturing industry of domestic automobile parts.

• Transactions of the Korean Society of Automotive Engineers
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• v.20 no.4
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• pp.33-38
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• 2012

Sandwich composite panel with high strength steel face can reduce the weight of the automotive structural parts. Unlike the parts in aerospace application, the automotive parts are made by the forming process for mass production. The CAE simulation can predict the failures caused by forces and deformation during the forming process. Since the material properties are very important factor for the simulation, we performed the tensile test to get the material properties. The inspections by the optical microscope at each strain level show the states of the polymer resin. The material properties measured by the tensile tests are used for the input data of simulation. The simulation predicts the forming process of the bumper back beam very exactly compared with the try out results.

• Journal of Sensor Science and Technology
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• v.32 no.2
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• pp.124-130
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• 2023

Implementing flexible production systems in domestic and foreign automotive design parts assembly has increased demand for automation and power reduction. Consequently, transition to a hybrid production method is observed where multiple vehicles are assembled in a single assembly line. Multiple robots, 3D vision sensors, mounting positions, and correction software have complex configurations in the automotive glass mounting system. Hence, automation is required owing to significant difficulty in the assembly process of automobile parts. This study presents a primer lighting and inspection algorithm that is robust to the assembly environment of real automotive design parts using high power 'ㄷ'-shaped LED inclined lighting. Furthermore, a 2D camera was developed in the primer coating inspection system-the core technology of the glass mounting system. A primer application demo line applicable to the actual automobile production line was established using the proposed high power lighting and algorithm. Furthermore, application inspection performance was verified using this demo system. Experimental results verified that the performance of the proposed system exceeded the level required to satisfy the automobile requirements.

• Journal of the korean Society of Automotive Engineers
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• v.16 no.1
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• pp.42-54
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• 1994

• Journal of the Microelectronics and Packaging Society
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• v.22 no.3
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• pp.1-7
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• 2015

In this study, properties of Pb-free solders for automotive electronics parts were discussed. Lead-free solders for electronics became important after RoHS (Restriction of the use of certain Hazardous Substances) to avoid environmental pollution. Also the growing electronic rate in automotive parts and ELV (End-of Life Vehicles) make Pb-free solder for automotive electronics to be inevitable trend. Definitely, Pb-free solder for automotive electronics should have good wettability, basic strength, but need more reliability than other solders, since it has harsh condition like high temperature, humidity and engine vibration. Thus, shear strength test, thermal shock, drop test and many others are needed to ensure the high reliability. This study describes the properties and requirements of Pb-free solders for automotive electronics.

• Transactions of the Korean Society of Automotive Engineers
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• v.22 no.4
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• pp.82-88
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• 2014

Recliner of automotive seat has the function to control the angle and has a close relation to the safety of seat. Therefore each of parts constituting recliner is important and recliner case to protect these parts from various dynamic loads is also important. As two kinds of recliner cases are designed and analyzed before manufacturing these products, this study result can be contributed to the strength durability.