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

Pitchaya Boonma
Division of Industrial Technology, School of Science and Technology, Sukhothai Thammathirat Open University, Nonthaburi
Thailand

Supawadee Theerathammakorn
Division of Industrial Technology, School of Science and Technology, Sukhothai Thammathirat Open University, Nonthaburi

Srisit Chianrabutra
Division of Industrial Technology, School of Science and Technology, Sukhothai Thammathirat Open University, Nonthaburi
Thailand