Title: MECHANICAL PERFORMANCE OF MACHINED CFRP LAMINATE

Authors: Rushikesh Suresh Ambekar, Kartikey Shahi, Darshan H R, Digvijay Pratap Singh, Debiprosad Roy Mahapatra

DOI: https://doi.org/10.33599/GL.2026.INCOMAT.TP26-0015

Abstract: Stress concentrations resulting from mechanical fastening are a major cause of failure in fiber-reinforced polymer composites used in load-bearing structures. To analyze the impact of fastening conditions on load-carrying performance, tensile tests were conducted on these laminates with holes, which allow a direct assessment of damage initiation and progression in specimens with localized tensile damage. In the present work, a comprehensive analysis was carried out to investigate the effect of machining parameter, such as hole size, on the tensile strength of a Carbon Fiber Reinforced Polymer (CFRP) composite. Open hole tension testing is performed on CFRP laminates with drilled holes of 3, 6, and 12 mm diameter at a feed rate of 300 mm/min. Post-mechanical test fractured specimens were analyzed to understand the mechanism of failure. By assessing strength and damage index, it is possible to quantify CFRP laminate sensitivity to defects induced by machining. The research aims to provide a strategy for developing CFRP laminates with improved resistance to damage at fastener holes, which are widely used in sectors involving mechanical fastening, such as automotive, aerospace, and marine.

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Conference: INCOMAT 2026

Publication Date: 2026/03/13

SKU: INCOMAT.TP26-0015

Pages: 10

Price: $20.00