Wirawanto, Teguh, and Muhamad Fitri. “Analysis of Relation Between Impact Strength and Torsional Strength in Palm Fiber-Reinforced Epoxy Resin Composite Materials”. Jurnal Teknik Mesin (Journal Of Mechanical Engineering), vol. 14, no. 3, Oct. 2025, pp. 197-05, doi:10.22441/jtm.v14i3.15920.