Micro Drilling of Single Crystal SiC Using Polycrystalline Diamond Tool

Ui Seok Lee, Chan Young Yang, Ju Hyeon Lee, Bo Hyun Kim

Silicon carbide (SiC) has been used as a material for semi-conductor, molds, and micro-electro-mechanical systems (MEMS) because of its superior thermal, electr...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.013

Mobile Robot Overcoming Narrow Space Using Negative Poisson’s Ratio

Jinwon Kim, Hyeongyeong Jeong, Baeksuk Chu

In this study, a novel size adjustable robot that could overcome an unstructured environment was introduced. To provide the robot with a volume-modifiable funct...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.024

Novel Design of Cooling Channel Utilizing Pin-Fin Vortex Generators in Electric Vehicle Driving Motor

Min-Gi Chu, Dong-Ryul Lee

The objective of this study was to numerically accomplish the cooling performance of an electric vehicle driving motor depending on cooling channel design. Cool...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.023

Performance Analysis of the Solid Rocket Propulsion System Using Solid Modeling and Level Set Method

Kyung Moo Kim, Doo Hee Han, Min Kyum Kim

The performance prediction and grain burn-back analysis of rocket motor are important steps in the designing of a solid propellant rocket motor. The grain burn-...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.033

Mathematical Modeling and Analysis for the Ejection Force of Pyrotechnic Suspension System

Jung Pil Kim, Gu Hyun Ryu, Joon Kim, Jae Seung Yoo

The main function of aircraft ejection system is that it separates the store from the aircraft. The ejection force is important for the safety of the aircraft w...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.036

Comparative Study of Gait Stability Using COM-COP Inclination Angle Changes of Elderly

Byeong Chan Cho, Tae Soo Bae

The current method of gait analysis has several limitations for determining gait stability, such as a complicated preparation process, repeated experimental pro...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.001

Fabrication of Thick Microfiber Mats Using Melt-Electrospinning

Jeong Hwa Kim, Gwang June Shin, Martin Byung-Guk Jun, Young Hun Jeong

Recently, porous structures of nano/microfibers are receiving great attention because of their excellent mechanical properties, surface area to volume ratio, an...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.020.110

Fabrication of Conductive Patterns by Selective Laser Sintering of Silver Nanoparticles-Photopolymer Ink

Gil-Yong Lee, Geo-Sung Lee

Recent developments in additive manufacturing (AM) process have led us to fabricate many mechanical and electrical components or devices into complex geometries...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.021

A Study on Development of a Reusable Protective Face Shield Using a Material Extrusion Process

An-Jae Hwang, Dong-Gyu Ahn

Due to the pandemic of SARS-CoV-2 (COVID-19) virus, the demand for personal protective equipment (PPE), including face shield, ventilator value, and so on, has ...

PDFHTMLPubReaderePub

DOI: https://doi.org/10.7736/JKSPE.021.034