Rahayu Budi Prahara, Nur Imam, and Indra Setiawan. “Analysis of Crack Defects in the Hanger Welding Area Using the DMAIC Method in the Heavy Equipment Industry”. TEKNOSAINS : Jurnal Sains, Teknologi Dan Informatika, Vol. 11, no. 1, Jan. 2024, pp. 194-00, doi:10.37373/tekno.v11i1.975.