The Impact of Hole Diameter on the Molded and Drilled Holes in Jute-Fiber-Reinforced Epoxy Composites

Abstract

Damage caused by the drilling process is the most common reason for the rejection of composite parts and components that include holes. This is especially true in the case of laminated composites. The purpose of the current experimental investigation is to investigate the efficiency of hole formation when the component is in the molding phase. The mechanical properties of molded and drilled holes in jute-fiber-reinforced epoxy composites have been compared in a study that was carried out with the purpose of conducting an examination of these features. It was discovered that the molded holes operate much better than the drilled holes when it comes to jute fiber/epoxy composite materials. This was the conclusion reached after observing both types of holes. The maximum tensile load that was taken by molded hole specimens of composites with hole diameters of 4 mm and 8 mm was reported to be 48.8% and 101.5% greater, respectively, than the maximum tensile load that was taken by drilled hole specimens of composites with the same diameter. In addition, the load-extension curves demonstrate that the specimens that were manufactured with molded holes were able to achieve a larger degree of extension when compared to those that were manufactured with drilled holes.

Keywords

• molded hole
• drilled hole
• lap joint strength
• epoxy composites
• tensile strength