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An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...

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Related Experiment Video

Updated: Oct 22, 2025

Experimental Procedure for Warm Spinning of Cast Aluminum Components

Experimental Procedure for Warm Spinning of Cast Aluminum Components

Published on: February 1, 2017

Optimization of Process Parameters in CNC Turning of Aluminum 7075 Alloy Using L27 Array-Based Taguchi Method.

Mohammad Nishat Akhtar¹, T Sathish², V Mohanavel³

¹School of Aerospace Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, Penang, Malaysia.

Materials (Basel, Switzerland)

|August 27, 2021

Summary

This study optimized Computer Numerical Control (CNC) machining parameters for Aluminum Alloy 7075. The Taguchi L27 method improved material removal rate, surface roughness, and cutting force for efficient manufacturing.

Keywords:

Al7075 L27 array Taguchi method signal to noise ratio turning parameters

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Area of Science:

Manufacturing Engineering
Materials Science
Industrial Optimization

Background:

Industry 4.0 necessitates efficient production methods.
Aluminum Alloy 7075 is a critical material in modern manufacturing.
Optimizing CNC machining is key to improving product quality and reducing costs.

Purpose of the Study:

To optimize process parameters for turning Aluminum Alloy 7075 using CNC.
To investigate the impact of speed, feed, and cutting depth on machining performance.
To achieve maximum material removal rate, minimum surface roughness, and least cutting force.

Main Methods:

Application of the Taguchi L27 orthogonal array methodology.
Integration with response surface design for comprehensive analysis.
Experimental investigation involving 27 specimens of Al7075 alloy.
Measurement of responses using direct and indirect contact sensors.

Main Results:

The Taguchi L27 method successfully optimized parameters for improved machining outcomes.
Achieved enhanced material removal rate, reduced surface roughness, and minimized cutting force.
Analysis through main effects plots and signal-to-noise ratios confirmed optimal settings.

Conclusions:

The Taguchi L27 approach provides an effective framework for optimizing CNC machining of Al7075.
Optimal parameters significantly enhance key performance indicators in the turning process.
The findings contribute to more efficient and cost-effective manufacturing of Aluminum Alloy 7075.