Ritta, B., Neadsanga, W. and Runruksa, K. 2020. The study of Parameter of L-Bending Wiping Process Causing Spring Back by Simulating Finite Element. RMUTL Engineering Journal. 5, 2 (Dec. 2020), 19–25. DOI:https://doi.org/10.14456/rmutlengj.2020.9.