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Mechanical and Vehicle Engineering

Effects of Surface Grinding Parameters on the Apparent Elastic Modulus of AA7075 Thin Plate

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2026-06-01

https://doi.org/10.21791/IJEMS.2026.09

Authors

Michael Kwabena Boadu,

University for Development Studies, School of Engineering, Department of Mechanical and Industrial Engineering, Tamale, Ghana.

Anthony Agyei-Agyemang,

Kwame Nkrumah University of Science and Technology, College of Engineering, Department of Mechanical Engineering, Kumasi, Ghana.

Faisal Adam

Kwame Nkrumah University of Science and Technology, College of Engineering, Department of Mechanical Engineering, Kumasi, Ghana.

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Keywords

Statistical Evaluation Surface Grinding Parameters Apparent Elastic Modulus AA7075 Thin Plates

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Copyright (c) 2026 Michael Kwabena Boadu, Anthony Agyei-Agyemang, Faisal Adam

This work is licensed under a Creative Commons Attribution 4.0 International License.

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Boadu, M. K., Agyei-Agyemang, A., & Adam, F. . (2026). Effects of Surface Grinding Parameters on the Apparent Elastic Modulus of AA7075 Thin Plate. International Journal of Engineering and Management Sciences, 1-20. https://doi.org/10.21791/IJEMS.2026.09

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Received 2026-01-02
Accepted 2026-06-01
Published 2026-06-01

Abstract

Aluminum 7075 (AA7075) thin plates are used extensively in the marine industry, especially for the manufacture of skin panels for hydrofoils. Although surface grinding is a finishing process for AA7075 thin plates, the extent of the influence of grinding parameters on the apparent elastic modulus is not well understood.  This study statistically evaluates the influence of surface grinding parameters on the apparent elastic modulus of AA7075 thin plates. Samples of AA7075 thin plates were ground with respect to an experimental design, and their apparent elastic modulus was measured from the DI-CP/V2 Servo-hydraulic testing machine. It was found that the feed has the highest standardized effect (7.0) on the apparent elastic modulus (9.84–32.81 GPa), followed by table speed (5.8) and grinding depth (5.5). The two-way interactions were significant except for the table speed-grinding depth interaction.  The regression model shows a close match to the experimental data as indicated by the low standard error (S = 2.14), large coefficient of determination (R² = 82.51%), and high adjusted coefficient of determination (R² adj = 73.52%), which means that the chosen factors and interactions can be used to explain the large percentage of the variability of the apparent elastic modulus. The optimal grinding parameters were found at high table speed (50 spm), high feed (5 mm), and high grinding depth (1 mm). 

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