Evaluation of delamination in the drilling of CFRP composites

Feroz Shaik , Ramakrishna Malkapuram , K. Chandra Shekar , P. Dhaval Varma

Abstract

Carbon Fiber Reinforced Polymer (CFRP) composite provides outstanding mechanical capabilities and is therefore popular in the automotive and aerospace industries. Drilling is a common final production technique for composite laminates however, drilling high-strength composite laminates is extremely complex and challenging. The delamination of composites during the drilling at the entry and exit of the hole has a severe impact on the results of the holes surface and the material properties. The major goal of this research is to investigate contemporary industry solutions for drilling CFRP composites: enhanced edge geometries of cutting tools. This study examined the occurrence of delamination at the entry and exit of the hole during the drilling. For each of the 80*). The feed rate was determined to be the most efficient factor in preventing hole entry and exit delamination using analysis of variance (ANOVA). Regression analysis was used to create first-degree mathematical models for each cutting tool

Key Words

ANOVA; delamination; drilling; regression

Address

Feroz Shaik and Ramakrishna Malkapuram — Department of Mechanical Engineering, Vignan's foundation for Science, Technology and Research, Guntur, Andhra Pradesh-522213, India
K. Chandra Shekar — Department of Mechanical Engineering, Vignan's Institute of Technology and Science, Deshmukhi (V), Yadadri Bhuvanagiri Dist-508284, Telangana, India
P. Dhaval Varma — Department of Mechanical, Materials and Manufacturing, University of Nottingham, United Kingdom

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