The Journal of King Mongkut's University of Technology North Bangkok
วารสารวิชาการพระจอมเกล้าพระนครเหนือ

Mana Wichangarm
Department of Mechanical Technical Education, Faculty of Technical Education, Rajamangala University of Technology Isan Khonkaen campus, Khon Kaen
Thailand

Pattanapong Kaewpho
Department of Mechanical Technical Education, Faculty of Technical Education, Rajamangala University of Technology Isan Khonkaen campus, Khon Kaen
Thailand