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

Nopparat Katkhaw
Department of Mechanical Engineering, School of Engineering, University of Phayao, Phayao
Thailand

Wichaphon Fakkaew
Department of Mechanical Engineering, School of Engineering, University of Phayao, Phayao